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Public Choice (2007) 131:157–175
DOI 10.1007/s11127-006-9111-3
O R I G I N A L A R T I C L E
The growth effects of fiscal policy in Greece 1960–2000
Konstantinos Angelopoulos · Apostolis Philippopoulos
Received: 17 August 2005 / Accepted: 25 September 2006C Springer Science+Business Media B.V. 2006
Abstract This empirical paper uses annual data for Greece 1960–2000 to study the link
between fiscal policy and economic growth. Our regression analysis implies that, although
a smaller public sector can be good for growth, it is necessary to look beyond size; the
composition and quality/efficiency of the public sector are equally important. The policy
lesson is that a smaller government share in GDP, a reallocation of funds away from the wage
bill to public investment, and an improvement in government quality/efficiency can become
engines of long-term growth.
Keywords Fiscal policy . Economic growth
JEL Classification: E6, O5
1 Introduction
The role of government, and in particular its fiscal policy, as determinant of economic growth
has received a lot of attention in the empirical literature. The evidence of the growth effectsof government expenditure and taxation has so far been mixed.1 This is consistent with the
predictions of the endogenous growth literature: government intervention may require higher
taxes, distort incentives, etc, but it can also protect property rights, address externalities, etc.
Thus, the relation between growth and fiscal variables need not be monotonic.2
1See e.g. Levine and Renelt (1992), Tanzi and Zee (1997), Folster and Henrekson (2001), Gemmel and
Kneller (2001), Mueller (2003, Chapter 22) and Barro and Sala-i-Martin (2004, Chapter 12).
2A popular conceptual framework has been provided by Barro (1990).
K. Angelopoulos
Athens University of Economics and Business, and University of Stirling
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158 Public Choice (2007) 131:157–175
This empirical paper uses annual data for Greece to study the link between fiscal policy
and economic growth for the years 1960–2000 (our results remain practically the same if we
omit the 1997–2000 observations that have been recently revised by Eurostat). Following
most EU policy reports, we focus on the growth effects of the size, composition and quality
of the public sector.3
To do so, and since this is a time-series study, we use a small selectivenumber of time-varying growth determinants (fiscal policy measures and standard regime
dummies only).
The main results of our regression analysis are as follows. First, when we follow common
practice by using the government consumption share in GDP as a measure of the overall
size of the public sector, there is evidence that larger sizes hurt growth. Specifically, a rise in
the rate of change of government consumption share in GDP by one standard deviation (or
7.655%) decreases GDP growth by 1.38%. On the other hand, alternative measures of the
overall size, like total government expenditure or total tax revenue, both as a percentage of
GDP, are not found to be significant.
Second, when we use disaggregated fiscal policy data, a general message is that wagesand salaries in the public sector as a share of GDP are bad for growth. For instance, over
1972–1998, a rise in the growth rate of expenditure on wages and salaries by one standard
deviation (or 9.7%) reduces GDP growth by 1.72%. There is also evidence (although less
robust) that public investment as a share of GDP is good for growth, and transfers as a share
of GDP are bad for growth. On the other hand, constructed effective tax rates on various
sources of income do not seem to matter to growth.
Third, we construct a simple proxy for the quality of public infrastructure by using an
intuitive index with a sufficiently long time-series dimension, also used by Tanzi and Davoodi
(1998). Our regressions show that only in those years in which our measure of government
quality deteriorates relative to the previous year, a larger government size is bad for growth.
By contrast, when our measure of quality improves relative to the previous year, the growth
effect of government size is insignificant. It is the significantly negative effects that dominate
over time; this is why on average larger sizes are found to hurt growth (see the first result
above). Thus, what really matters to growth is the size-efficiency nexus, not size per se.
It is worth pointing out that the introduction of the above quality index improves the fit of
our regressions impressively. The growth in the share of government in GDP, when allowing
for a non-linear Laffer curve-type effect, can explain – along with some simple political
dummies – around 80% of the variation of the growth rate in the Greek economy over the
last forty years.These findings imply some policy lessons. Other things equal, a reduction in government
consumption can become an engine of growth. But, it is necessary to look beyond size:
the composition and efficiency of the public sector are also important. In particular, a fiscal
consolidation can become especially expansionary if it takes the form of cuts in expenditure
on wages and salaries in the public sector. A reallocation of funds into public investment
could further contribute to growth. Concerning efficiency or quality, it is striking that in years
of improved government quality or efficiency, increases in an already over-sized public sector
have not hurt growth.
Our paper provides a relatively rich study of the Greek case. It also studies not only the
growth effects of the size and composition of the public sector, but also its quality. As far as
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Public Choice (2007) 131:157–175 159
we know, there are no papers that study how public sector quality shapes the growth effect
of size.
The rest of the paper is as follows. Section 2 reviews the literature. Section 3 describes the
data and their time-series properties. In section 4, we test how the government size affects
growth. In Section 5, we analyze the effects of disaggregated fiscal-tax policies. Section 6examines how the growth effects of size depend on the quality of government. Conclusions
and extensions are in Section 7.
2 Related literature and econometric problems
Empirical studies of growth have primarily focused on cross-country differences in long-time
period averages. In these cross-section and panel studies, there is some general indication
that the overall size of the public sector (see below how this size is measured) is negatively
associated with economic growth (see e.g. Barro & Sala-i-Martin, 2004; Folster & Henrekson,2001).
But this negative association is statistically fragile and sensitive to model specification (see
e.g. Levine & Renelt, 1992; Tanzi & Zee, 1997). In their widely cited critique, Levine and
Renelt (1992, p. 951) have emphasized two reasons for non-robustness: (i) The overall size
of government cannot capture the different implications of different government activities.
Hence, several authors use disaggregated data to investigate the growth effects of specific
categories of public expenditure and taxation (see e.g. Kneller, Bleaney, & Gemmel, 1999).
(ii) Ignoring government efficiency may yield inaccurate measures of the actual delivery of
public services. Hence, Angelopoulos, Philippopoulos, and Tsionas (2006) have constructedan indicator of public sector efficiency and have provided evidence that there is a non-linear
effect of government size, in the sense that “efficient” and “inefficient” governments are
situated on different sides of a Laffer curve in economic growth.
An obvious shortcoming of cross-section and panel studies is that they rely on the assump-
tion of common coefficients across countries although different countries may have different
structures. This naturally leads to time-series studies of single countries.4 But time-series
studies are still liable to the criticisms of Levine and Renelt (1992) discussed above. In ad-
dition, they may suffer from two well-known problems: (a) If the series are non-stationary,
the regressions might be spurious. (b) The effect of government size might be biased due to
endogeneity if higher government spending is triggered by negative income shocks.Our paper uses annual data for the period 1960–2000 to study the growth effects of fiscal
policy in Greece.5 In doing so, we will try to deal with all the above problems. Namely, we will
first pay attention to the time-series properties of the data to avoid the spurious regression
problem and to investigate for possible breaks or regime switches; second, we will test
for exogeneity of government size; third, we will examine whether different categories of
government expenditures and taxes have different implications for growth; fourth, we will
4 Time-series studies of single countries include Grossman (1988) who has estimated a non-linear effect of
the size of government on economic growth by using annual data for the US over 1929–1982; Peden and
Bradley (1989) who have used annual US data for the post-war period and report that increases in the scale of
l d d i h h R (1986) h i i i f
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160 Public Choice (2007) 131:157–175
examine whether the data reveal a non-monotonic growth effect of fiscal policy depending
on the mix between government size and government quality.
3 Data, integrability and breaks
This section introduces the raw data and looks at their statistical properties. We start with
data sources.
3.1 Data sources and graphs
There are annual data for various types of government expenditures and taxes for Greece,
which are available for different time intervals over 1960–2000. Our main data sources are the
Penn World Tables (PWT), version 6.1 (see Heston, Summers, & Aten, 2002), and the World
Development Indicators (WDI) dataset. To construct the economy’s growth rate (denoted asgrowth in the regressions), we use real GDP per capita in constant prices (we use the PWT
measure of GDP per capita; there are no differences if we use the WDI measure instead).
The size of government is usually measured by government spending, tax revenues and
the budget balance, all expressed as shares of GDP (see e.g. Tanzi & Zee, 1997; Persson &
Tabellini, 2003). In our study, again following usual practice, by government spending we
mean the share of government consumption in GDP (denoted as govshare and being available
from PWT)6 and the ratio of total government expenditures over GDP (denoted as govexp
and being available from WDI).7
The evolution of these two measures of government spending is shown in Figure 1. As can
be seen, govexp is always larger than govshare, despite the fact that the former refers to the
central government and the latter to the general government. Their difference is primarily due
to interest payments and transfer payments, which are not calculated in GDP and thus are not
included in govshare. Also, notice that the govexp series is more volatile than the govshare
series. One can detect two breaks in govshare, a rise around 1974 and a fall around 1994.
The govexp series, on the other hand, reveals two big breaks, a sharp rise around 1980 and
an abrupt fall around 1991 (this fall is due not only to an actual decrease in some categories
of government spending, like transfers, but also to changes in accounting definitions as the
Greek governments started transferring central government deficits to public enterprises).
Concerning disaggregated government expenditure,and following most of the related liter-ature,8 we use data from WDI coming from the Government Financial Statistics (GFS) Year-
book, for four types of central government expenditure as a share of GDP over 1972–1998:
government capital expenditure as a share of GDP (denoted as gcap), government goods and
services expenditure as a share of GDP (denoted as ggs), government wages and salaries ex-
penditure as a share of GDP (denoted as gws), and government subsidies and other transfers
6 This variable (govshare) refers to the general government and it comprises government spending on goods
and services that are included in GDP, except for fixed public investment (the latter is included in the PWT in
the investment share in GDP).
7 This variable (govexp) includes all expenditures of the central government (thus, it includes capital expendi-
ture, transfers, and interest payments on public debt on the part of the central government). Note that measures
f l d l diff b i ll ( l b l )
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Public Choice (2007) 131:157–175 161
Fig. 1 Government spending
as a share of GDP (denoted as gst ).9 These four components are plotted in Figure 2A. The
evolution of gst is particularly striking: a tremendous rise in subsidies and other transfers
occurred in the late 70s that continued during the whole decade of the 80s and was reversed
in the early 1990s. At the same time (namely, early 1990s), there is also a clear fall in ggs
and gws.
In our regressions, we will also use the above four components as shares of total govern-
ment expenditure: namely, capital expenditure as a share of govexp (denoted as gcapexp),
goods and services expenditure as a share of govexp (denoted as ggsexp), wages and salaries
expenditure as a share of govexp (denoted as gwsexp), and subsidies and other transfers as a
share of govexp (denoted as gstexp).10
Data on some categories of government expenditure can be also obtained from the OECD
Economic Outlook Database. The latter provides the share of government investment in
GDP (we denote it as ginv), the share of government wage consumption in GDP (we denote
it as gwag) and the share of government transfer payments in GDP (we denote it as gtran
and is obtained by summing the Economic Outlook variables “social benefits paid by thegovernment”, “capital transfers” and “transactions and subsidies”). Although this dataset
provides a less explicit categorization of government expenditure than the GFS (this is why it
is less popular), it has the advantage of being available over a longer time-period, 1960–2000.
As can be seen in Figure 2B, the motion of ginv, gwag and gtran is similar to that of gcap,
gws and gst in Figure 2A, at least for the time interval that both series are available. 11
The WDI dataset also provides GFS data on total tax revenues of the central government
over GDP, denoted as trev in the regressions, and the overall budget balance as a share of GDP,
denoted as budget , both over 1972–1998. In addition, we will use effective tax rates on labor
9 Wages and salaries are a subcomponent of goods and services.10 WDI l d i H i d il bl f ll i i d
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162 Public Choice (2007) 131:157–175
Fig. 2 (A) Expenditure by type. (B) Components of expenditure
income (denoted as teflab), capital income (denoted as tefcap) and consumption (denoted
as tefcon), over 1970–2000, obtained from Martinez-Mongay (2000).12 It is recognized thatseries that have to do with tax revenues are problematic measures of government size mainly
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Public Choice (2007) 131:157–175 163
Fig. 3 Tax revenue and effective tax rates
because of tax evasion (see e.g. Tanzi & Zee, 1997; Folster & Henrekson, 2001). The same
applies to the government budget since it includes tax revenues. Keeping these reservations
in mind, Figure 3 plots the tax revenue-to-GDP ratio and the three effective tax rates. Up to
1990, trev was higher than the effective tax rates, but after 1990 the situation has clearly been
reversed.
Our reading of Figure 3 is as follows. The recent increase of effective tax rates, combined
with the concurrent decrease in tax revenues as a share of GDP, implies smaller effective tax
bases in the 1990s (i.e. the denominator in the calculation of effective tax rates is smaller).
At the same time, there is international evidence that “statutory” tax bases have not been
narrowed during the nineties (see Devereux, Griffith, & Klemm, 2002). Therefore, in Greece,
the 1990s is probably associated with increased tax avoidance and/or tax evasion.
3.2 Integrability tests and structural breaks
Before proceeding to estimation, it is necessary to test for the order of integration of time-
series (when we do not have variables of the same order of integration, regressions are
unbalanced). As a first step, we use the standard augmented Dickey-Fuller (ADF) test for
unit roots. The test statistics from ADF tests (when a constant, a time trend and one lag
are included) are reported in Table 1 together with the critical values at 1%, 5% and 10%
significance levels. The ADF statistic for growth rejects the null of a unit root at the 10%
level, but the null cannot be rejected for the fiscal variables. When we use the growth rates
of fiscal variables (the growth rate of a variable is denoted by adding the symbol ∆before it),
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164 Public Choice (2007) 131:157–175
Table 1 Unit root tests (augmented Dickey-Fuller and Zivot-Andrews)
Period for ADF 1% 5% 10% Zivot-Andrews
which test critical critical critical (minimum DF
Variable available statistic value value value statistic)
GDP 1960–2000 −1.730 −4.251 −3.544 −3.206 −2.941 (1969)
growth 1961–2000 −3.363 −4.260 −3.548 −3.209 −7.709 (1974)
govshare 1960–2000 −0.915 −4.251 −3.544 −3.206 −3.297 (1989)
∆govshare 1961–2000 −4.453 −4.260 −3.548 −3.209 −6.911 (1994)
exp 1972–1998 −1.713 −4.380 −3.600 −3.240 −6.111 (1991)
∆exp 1973–1998 −4.337 −4.380 −3.600 −3.240 −6.183 (1991)
trev 1972–1998 −1.738 −4.380 −3.600 −3.240 −4.616 (1991)
∆trev 1973–1998 −3.376 −4.380 −3.600 −3.240 −7.340 (1991)
budget 1972–1998 −2.016 −4.380 −3.600 −3.240 −5.048 (1989)
∆budget 1973–1998 −4.624 −4.380 −3.600 −3.240 −6.650 (1980)
gcapexp 1972–1998 −1.327 −4.380 −3.600 −3.240 −4.832 (1992)∆gcapexp 1973–1998 −4.240 −4.380 −3.600 −3.240 −6.469 (1991)
gcap 1972–1998 −2.935 −4.380 −3.600 −3.240 −4.650 (1991)
∆gcap 1973–1998 −5.304 −4.380 −3.600 −3.240 −5.511 (1987)
ggsexp 1972–1998 −1.814 −4.380 −3.600 −3.240 −6.967 (1980)
∆ggsexp 1973–1998 −3.021 −4.380 −3.600 −3.240 −4.903 (1983)
ggs 1972–1998 −2.762 −4.380 −3.600 −3.240 −3.974 (1991)
∆ggs 1973–1998 −3.662 −4.380 −3.600 −3.240 −5.289 (1991)
gstexp 1972–1998 −1.449 −4.380 −3.600 −3.240 −5.671 (1980)
∆gstexp 1973–1998 −2.959 −4.380 −3.600 −3.240 −6.010 (1982)
gst 1972–1998 −1.436 −4.380 −3.600 −3.240 −3.837 (1991)
∆gst 1973–1998 −2.756 −4.380 −3.600 −3.240 −6.382 (1983)
gwsexp 1972–1998 −0.644 −4.380 −3.600 −3.240 −4.402 (1978)
∆gwsexp 1973–1998 −4.340 −4.380 −3.600 −3.240 −5.004 (1983)
gws 1972–1998 −2.537 −4.380 −3.600 −3.240 −3.536 (1991)
∆gws 1973–1998 −3.516 −4.380 −3.600 −3.240 −6.305 (1991)
teflab 1971–2000 −1.995 −4.343 −3.584 −3.230 −4.830 (1988)
∆teflab 1970–2000 −4.192 −4.352 −3.588 −3.233 −9.189 (1985)
tefcap 1970–2000 −1.639 −4.343 −3.584 −3.230 −5.025 (1993)
∆tefcap 1971–2000 −4.604 −4.352 −3.588 −3.233 −5.884 (1988)
tefcon 1970–2000 −3.332 −4.343 −3.584 −3.230 −4.570 (1984)
∆tefcon 1971–2000 −4.504 −4.352 −3.588 −3.233 −5.243 (1987)ginv 1960–2000 −2.418 −4.251 −3.544 −3.206 −3.275 (1978)
∆ginv 1961–2000 −4.479 −4.260 −3.548 −3.209 −6.404 (1980)
gwag 1960–2000 −2.065 −4.251 −3.544 −3.206 −3.545 (1981)
∆gwagp 1961–2000 −4.956 −4.260 −3.548 −3.209 −8.963 (1973)
gtran 1960–2000 −1.892 −4.251 −3.544 −3.206 −3.726 (1981)
∆gtran 1961–2000 −4.142 −4.260 −3.548 −3.209 −6.735 (1982)
govqual 1960–2000 −1.767 −4.251 −3.544 −3.206 −4.648 (1972)
∆govqual 1961–2000 −4.983 −4.260 −3.548 −3.209 −8.047 (1967)
Notes. 1. ADF statistics for the variable X t are obtained from OLS estimation of the fol-
lowing autoregression ∆ X t = δ0 + δ1t + δ2 X t −1 + δ3∆ X t −1 + ut . 2. The ZA test statisticreported is the minimum Dickey-Fuller statistic calculated across all possible breaks in the
data, when both a break in the intercept and the time trend is allowed for. The year in paren-
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Public Choice (2007) 131:157–175 165
that allows for an endogenous break in both the intercept and the time trend.13 Apart from
statistical reasons, an advantage of the ZA test is that it can endogenously detect regime
switches. As can be seen in Table 1, the most important difference from the ADF tests is in
the series for total government expenditures and its components. Big breaks for these series
are evident as in the graphs discussed above. In particular, govexp and ∆
gst , turn out to beI(0) once a break is allowed in 1991 and 1983 respectively, while ggsexp and gstexp turn out
to be I(0) once a break is allowed in 1980.14 The rest of the variables follow, more or less,
the pattern indicated by the ADF tests: namely, the levels of fiscal variables cannot reject the
null of a unit root, whereas their growth rates clearly reject the null at the 5% or even at the
1% level.
These statistical properties of the data will be taken into account in the regression analysis
below by, firstly, using the rates of change in the level of fiscal variables (rather than the level
itself)15 and, secondly, introducing appropriate dummies to capture the regime switches
suggested by the plots and confirmed by the ZA tests.16
Specifically, we will allow for four regimes: First, the early period 1960–1973, whichwas an autocratic regime both politically and economically, especially the period of the
military junta 1967–1973. Second, the period 1974–1979, which is the beginning of the
democratic era without serious public finance problems. Third, the period 1980–1993, which
is a period of high spending and heavy public borrowing (in addition, all the breaks in
the public finance measures are taking place during this period). Finally, the “Maastricht
Treaty” period, 1994-onwards, during which the Greek governments started taking measures
to stabilize the macro-economy. Therefore, in addition to an intercept for the whole period,
we will also use a dummy for 1960–1973 (denoted as d (1960–73)), a dummy for 1980–1993
(denoted as d (1980–93)), and a dummy for 1994–2000 (denoted d (1994–2000)). Moreover,
in addition to a time trend for the whole period, we will use a time trend for 1960–1973 (this
is because the ZA tests in Table 1 indicated the presence of a structural break in the growth
rate of GDP at around 1973, in both the intercept and the trend).
These breaks are consistent with previous studies (see e.g. Alogoskoufis, 1995;
Makrydakis, Tzavalis, & Balfoussias, 1999; Lockwood, Philippopoulos, & Tzavalis, 2001;
Hondroyiannis & Papapetrou, 2001). In particular, Alogoskoufis (1995) describes a regime
switch in economic growth that took place at about 1974, the year of the restoration of democ-
racy. This has been confirmed by our ZA test. Regarding the fiscal expenditure variables,
a structural break is usually argued to have occurred at around 1980, when the outgoing
conservatives and mainly the incoming socialists increased spending and deficits. This break
13 We use the routine written by Baum (2004). The ZA test can endogenously determine possible breaks in
the data mimicking unit roots. In particular, the ZA test rejects the null of non-stationarity when the minimum
value of the Dickey-Fuller statistic, calculated across all possible breaks in the data, is less than the critical
value of the test.14 The ZA test for ∆ggsexp cannot reject the null of a unit root at the 5% level. However, since the ZA statistic
is very close to the critical value, we will treat ∆ggsexp as an I(0) variable. We report that including ∆ggsexp
in our regressions (see Table 3) does not change our results.15 Using the rates of change of fiscal-tax variables to assess the impact of the size of government on the GDP
growth rate is common in the empirical literature (see e.g. Tanzi & Zee, 1997, p. 188; see also the studies for
the USA mentioned above). Hatzinikolaou (1997a, b) is also using the growth rate of government expenditures
GDP d h i li i f h i f f h i i h G k
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166 Public Choice (2007) 131:157–175
has been again picked up by the ZA test. Another structural break is believed to have taken
place around 1993, after the Maastricht Treaty. Again the ZA test has picked up a break in
the growth of the share of government in GDP at this time.
4 The growth effect of the size of public sector
This section runs least square regressions to examine the effects of aggregate measures of
government size on economic growth. Results are presented in Table 2.
4.1 The share of government as a measure of government size
We start by using the growth rate of the share of government in GDP (denoted as ∆govshare)
as a measure of government size. Results are presented in columns 1, 2 and 3 of Table 2.
We start in column 1 by just including a dummy and a time trend, both for the early period1960–1973 (in addition to an intercept and a time trend covering the full period). Recall
that these breaks have been picked up by the ZA test in the growth series. As can be seen,
∆govshare exerts a significantly negatively effect on growth, indicating that fiscal spending
in Greece has been growing too much, at least with respect to macroeconomic growth. The
quantitative effect is substantial too. An increase in the growth rate of ∆govshare by one
standard deviation, or 7.655%, decreases growth by 1.38%.
The d (1960–1973) dummy is positive and significant, implying higher growth in the early
post-war period. This can simply be the result of convergence effects, since output in 1974
was much higher than in 1960. But it can also mean that certain features of the democratic
regime in the post-1974 era have not been favorable to macroeconomic performance (see also
the next section and the discussion in Alogoskoufis, 1995). Also, note that the time trends
are both insignificant. Finally, notice that this simple regression has a R2 of about 62%. Thus,
the growth rate of the share of government in GDP, together with a simple regime dummy,
can explain around 62% of the variation of the growth rate in Greece over the time period
1960–2000. Fiscal policy obviously matters to growth.
In column 2 of Table 2, we introduce the dummies for the high spending period, 1980–
1993, and the Maastricht Treaty period, 1994–2000. Thus, now the effect of the regime
dummies has to be interpreted with respect to the omitted time period 1974–1979, which
is effectively picked up by the constant term. The effect of ∆govshare is as before, and thesignificant dummies are now d (1960–1973) and d (1980–1993). In other words, the autocratic
period is still associated with higher growth, while the period 1980–1993 is associated with
lower growth. The Maastricht Treaty dummy is not significant, as is also the case with the two
time trends. Since the time trends are not significant, we choose to drop them. The new results
are reported in column 3. This regression (column 3, Table 2) will serve as a benchmark. In
what follows, we will build on this.
4.2 Misspecification tests
A number of specification tests is undertaken.17 Results are presented in Table 2 below the
estimates. First, we test for serial correlation. The Durbin-Watson test for first-order serial
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Public Choice (2007) 131:157–175 167
e s i z e o
f p u b l i c s e c t o r a n d e c o n o m i c g r o w
t h
( 1 )
( 2 )
( 3 )
( 4 )
( 5 )
− 0 . 1 7 8 ∗ ∗ ∗
( − 2 . 9 5 )
− 0 . 1 8 0 ∗ ∗ ∗
( − 3 . 1 8 )
− 0 . 1 8 6 ∗
∗ ∗
( − 3 . 3 1 )
–
–
–
–
–
− 0 . 0 5 6 ( − 1 . 1
3 )
–
–
–
–
–
− 0 . 0 8 5 ( − 1 . 2 7 )
)
0 . 0 5 2 ∗
( 1 . 9 4 )
0 . 0 6 9 ∗ ∗
( 2 . 1 3 )
0 . 0 4 1 ∗
∗ ∗
( 3 . 3 1 )
0 . 0 5 3 ∗
( 1 . 6 9 )
0 . 0 4 9 ( 1 . 5 6 )
)
–
− 0 . 0 4 6 ∗ ∗
( − 2 . 4 3 )
− 0 . 0 2 7 ∗
∗
( − 2 . 2 6 )
− 0 . 0 1 9 ( − 1 – 4 0 )
− 0 . 0 2 2 ( − 1 . 5 8 )
)
–
− 0 . 0 5 0 ( − 1 . 4 9 )
− 0 . 0 1 1 ( − 0 . 7 9 )
0 . 0 0 3 ( 0 . 2 0 )
0 . 0 0 6 ( 0 . 3 5 )
− 0 . 0 0 0 0 2 ( − 0 . 0 4 )
0 . 0 0 1 ( 1 – 2 8 )
–
–
–
9 7 3 )
0 . 0 0 0 7 ( 0 . 3 8 )
− 0 . 0 0 1 ( − 0 . 4 9 )
–
–
–
0 . 0 1 2 ( 0 . 6 2 )
− 0 . 0 0 4 ( − 0 . 1 6 )
0 . 0 2 9 ∗
∗ ∗
( 2 . 8 4 )
0 . 0 2 2 ∗
( 1 . 8 6 )
0 . 0 2 3 ∗
( 1 . 9 4 )
6 2 . 1 9 %
6 9 . 1 2 %
6 7 . 4 2 %
3 1 . 7 %
3 2 . 7 5 %
d ( 5 , 4 0 ) =
1 . 7 6 d u ≈
1 . 7 9
d ( 7 , 4 0 ) =
2 . 1 9 d u ≈
1 . 7 9
d ( 5 , 4 0 ) =
2 . 0 8 d u ≈
1 . 7 9
d ( 5 , 2 6 ) =
2 . 1 8 8 d u ≈
1 . 8 3
d ( 6 , 2 6 ) =
2 . 2 0 8 d u ≈
1 . 8 9
c
X 2 ( 1 ) =
0 . 3 1 0 ( 0 . 5 7 7 )
X 2 ( 1 ) =
0 . 6 0 6 ( 0 . 4 3 6 )
X 2 ( 1 ) = 0 . 1 9 6 ( 0 . 6 5 8 )
X 2 ( 1 ) =
0 . 2 3 7 ( 0 . 6 2 6 )
X 2 ( 1 ) =
0 . 3 0 2 ( 0 . 5 8 2 )
c
X 2 ( 2 ) =
0 . 4 8 9 ( 0 . 7 8 3 )
X 2 ( 2 ) =
2 . 2 1 4 ( 0 . 3 3 0 )
X 2 ( 2 ) = 1 . 8 3 1 ( 0 . 4 0 0 )
X 2 ( 2 ) =
1 . 4 7 5 ( 0 . 4 7 8 )
X 2 ( 2 ) =
1 . 4 0 2 ( 0
. 4 9 6 2 )
i s t i c
t =
− 0 . 0 7 ( 0 . 9 4 6 )
t =
0 . 0 3 ( 0 . 9 7 6 )
t =
− 0 . 0
4 ( 0 . 9 6 7 )
t =
1 . 4 2 ( 0 . 1 7
2 )
t =
− 0 . 8 3 ( 0 . 4 1 9 )
E T
F ( 3 , 3 2 ) =
3 . 2 3 ( 0 . 0 3 5 )
F ( 3
, 3 0 ) =
3 . 0 7 ( 0 . 0 4 3 )
F ( 3 , 3 2 )
=
4 . 0 2 ( 0 . 0 1 5 )
F ( 3 , 1 8 ) =
0 . 4
6 ( 0 . 7 1 5 )
F ( 3 , 1 7 ) =
0 . 4 4 ( 0 . 7 3 0 )
4 0
4 0
4 0
2 6
2 6
t i o s a r e
s h o w n i n p a r e n t h e s e s n e x t t o t h e
e s t i m a t e d c o e f fi c i e n t s .
∗
d e n o t e s
s i g n i fi c a n c e a t t h e 1 0 % l e v e l ,
∗ ∗
a t t h e 5 % a n d ∗ ∗ ∗
a t t h e 1 % 2 . D
W
i s t h e
o n d - s t a t i s t i c t o t e s t f o r fi r s t o r d e r s e r i a l c o
r r e l a t i o n i n t h e r e s i d u a l s . T h e u p p e r l e v e l f o r t h e s i g n i fi c a n c e l e v e l o
f d i s s h o w n i n p a r e n t h e s e s . 3 . B G
( 1 ) ( r e s p .
B r e u s c h
- G o d f r e y L M s t a t i s t i c t o t e s t f o r fi r s t ( r e s p . s e c o n d ) o r d e r s e r i a l c o r r e
l a t i o n i n t h e r e s i d u a l s . N o s e r i a l c o
r r e l a t i o n i s t h e n u l l h y p o t h e s i s . T h e p - v a l u e
h o w n i n p a r e n t h e s e s . 4 . T h e H a u s m a n s t a t i s t i c i s a t s t a t i s t i c t o t e s t t h e n u l l o
f e x o g e n e i t y o f t h e r e l e v a n t fi s c a l v a r i a b l e . T h e p - v a l u e o f t h e t e s t i s s h o w n i n
5 . R E S E
T i s t h e R a m s e y r e g r e s s i o n s p e c i fi
c a t i o n e r r o r t e s t f o r o m i t t e d v a r i a b l e s a n d n o n - l i n e a r i t y . A c o r r e c t f u
n c t i o n a l f o r m s p e c i fi c a t i o n i s t h e n u l l . T h e
t e s t i s s h o w n i n p a r e n t h e s e s
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168 Public Choice (2007) 131:157–175
correlation cannot reject the null of no autocorrelation, as the d -test statistic is either greater
than, or very close to, d u , which is the upper level of significance. In addition, we perform
the Breusch-Godfrey LM test for higher-order serial correlation. Results of testing for first-
and second-order autocorrelation are again reported in Table 2, and do not reject the null of
no autocorrelation. Thus, the residuals are not serially correlated.The usual concern in growth regressions with annual data is the possibility that the effects
of fiscal policy may be estimated with significant biases due to possible endogeneity of
fiscal variables. We therefore use valid instruments for ∆govshare to test the assumption
that any potential simultaneity does not introduce significant biases in estimating the effect
of ∆govshare on growth. In particular, we use a Hausman-type test to test for endogeneity
of ∆govshare, as suggested by Wooldridge (2002). As instruments for ∆govshare, we use
the regime dummies, the lagged value of ∆govshare to capture policy persistence, and a
pre-election dummy that takes the value of 1 in an election year and zero otherwise (see
Lockwood et al., 2001). These instruments are exogenous and so valid for our purposes.
The Hausman test, also reported in Table 2, does not reject the null that ∆govshare is notcorrelated with the error term of the growth equation.
There is, however, one catch. The Ramsey RESET test for functional form misspecification
rejects the null of a correct functional form specification. Recall that RESET is a general
specification test against possible omitted variables or nonlinearity in the data. We interpret
this rejection as an indication that something is missing from our story so far (we will come
back to this in Section 6 below).
4.3 Using other measures of government size
We now examine the growth implications of two other measures of the overall size of gov-
ernment. In column 4 of Table 2, we report results when we use the growth rate of total
government expenditure as a share of GDP, ∆govexp, as a measure of size, while in column
5 we use the growth rate of total tax revenues as a share of GDP, ∆trev, as a measure of
government size. Both variables are not significant and the associated R2 drop by almost
50% (both regressions pass the serial correlation, the Hausman and the RESET tests). As
argued above, tax revenue is a problematic variable. In the case of total expenditure, this is
a very general measure consisting of many components, each of which may have a different
effect on the growth rate. This explains the popularity of ∆govshare in this type of studies.
Finally, we report that we have also tried ∆budget as a measure of the size of government in
our growth regression. This variable is again insignificant.
4.4 Summary of the section
When we follow common practice by using the government share in GDP as a measure of
the overall size of government, there is robust evidence that larger sizes hurt macroeconomic
growth. Specifically, a rise in the growth rate of government share in GDP by one standard
deviation (or 7.655%) decreases GDP growth by 1.38%. On the other hand, alternative
measures of the overall size, like total government expenditures or tax revenues, both asshares of GDP, are insignificant. Actually, the significance of the government consumption
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Public Choice (2007) 131:157–175 169
5 The growth effect of the composition of the public sector
Useful insights can be gained by considering the effects of sub-categories of expenditure and
taxes (see e.g. Kneller et al., 1999). To do so, we use the disaggregated data described in
Section 3 above.
5.1 Results from the WDI dataset
We start with decomposition by type, over 1972–1998, as obtained from WDI and illustrated
in Figure 2A. Column 1 of Table 3 augments the regression of column 4 in Table 2 by adding
some key components of government expenditure expressed as shares of total government
expenditure (see Baldacci, Hillman, & Kojo, 2004, for a similar specification). Specifically we
add ∆gcapexp, ∆gstexp and ∆wsexp (which have been defined in Section 3) in the regression
of column 4 in Table 2.18 Although the effect of total expenditure remains insignificant, two of
its components are significant. In particular, capital expenditures are good for growth, whilewages and salaries are bad for growth. Hence, the composition of public finances matters to
economic performance. Also, notice that the R2 of this regression rises to 55.88% (compare
this to that in column 4 of Table 2) and that this specification passes the serial correlation
and the RESET tests.
It makes also sense to use the above fiscal components expressed as shares of GDP
(rather than as shares of total government expenditure). The results of regressing growth
on ∆gcap, ∆ws and ∆gst (as defined in Section 3), as well as the usual set of dummies,
are presented in column 2 of Table 3. Capital expenditures (∆gcap) accelerate growth, while
wages and salaries (∆
ws) reduce growth. Specifically, an increase in the growth rate of capitalexpenditures by one standard deviation (or 10.7%) increases GDP growth by 1.21%, while
an increase in the growth rate of wages and salaries by one standard deviation (or 9.7%)
reduces GDP growth by 1.72%. Notice that the role of the regime dummies remains as in
Table 2, while the R2 is higher compared to that in e.g. column 4 of Table 2. Also, note that
our specification passes the serial correlation and the RESET tests.
We also include the effective tax rates ∆tefcon, ∆tefcap and ∆teflab (as defined in
Section 3). The results, reported in column 3 of Table 3, show that the effective tax rates are
not significant, although the signs are intuitive. In this specification, tne effect of ∆gcap is
positive but not significant, while the effect of ∆ws remains as before.
These are intuitive results. Namely, public investment is usually associated with highergrowth (see e.g. Barro, 1990). On the other hand, the unprecedented increase in public sector
employment that took place in Greece after 1974, and especially during 1980–1993, has
imposed a significant burden on the economy. This can happen via various channels, e.g.
crowding out effects, distortion of private incentives, the creation of powerful interest groups
mainly in the form of public sector unions, etc.
In column 4 of Table 3, we use ∆ggsexp (as defined in Section 3) instead of ∆wsexp. As
can be seen, the former is negative but not statistically significant. In this specification, no
fiscal variable is significantly related to growth and the fit of the regression is reduced. This
is the reason we prefer the specification in column 1. The same results are obtained if we
replace ∆wsexp with ∆ggsexp in the previous regressions of Table 3.
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170 Public Choice (2007) 131:157–175
e c o m p o s i t i o n o f p u b l i c s e c t o r a n d e c o n o m i c g r o w t h
( 1 )
( 2 )
( 3 )
( 4 )
( 5 )
− 0
. 0 2 5 ( − 0 . 3 4 )
–
–
− 0 . 0 2 2 ( − 0 . 2 5 )
–
0
. 1 2 5 ∗ ∗
( 2 . 1 5 )
–
–
0 . 0 6 2 ( 1 . 0 0 )
–
–
–
–
− 0 . 1 5 1 ( − 1 . 3 3 )
–
− 0
. 2 3 4 ∗ ∗
( − 3 . 0 3 )
–
–
–
–
− 0
. 0 0 1 ( − 0 . 1 )
–
–
− 0 . 0 2 1 ( − 0 . 9 4 )
–
–
0 . 1 1 3 ∗ ∗
( 2 . 1 4 )
0 . 0 7 5 ( 1 . 2 1 )
–
–
–
− 0 . 1 7 7 ∗ ∗ ∗
( − 2 . 9 9 )
− 0 . 1 5 8 ∗ ∗
( − 2 . 5 6
)
–
–
–
0 . 0 0 6 ( 0 . 5 2 )
0 . 0 0 7 ( 0 . 6 1 )
–
–
–
–
0 . 1 0 5 ( 1 . 1 6 )
–
–
–
–
− 0 . 1 5 6 ( − 1 . 1 0 )
–
–
–
–
− 0 . 0 1 9 ( - 0 . 0 5 1 )
–
–
–
–
–
–
0 . 0 2 8 ( 0 . 9 8 )
–
–
–
–
− 0 . 2 2 6 ∗ ∗
( − 2 . 6 1 )
–
–
–
–
− 0 . 0 8 1 ∗
( − 1 . 7 8 )
)
0
. 0 4 7 ( 1 . 6 8 )
0 . 0 4 8 ∗ ( 1 . 7 6 )
0 . 0 3 7 ( 1 . 1 7 )
0 . 0 5 4 ( 1 . 6 8 )
0 . 0 3 3 ∗ ∗
( 2 . 7 0 )
)
− 0
. 0 2 1 ( − 1 . 6 4 )
− 0 . 0 2 1 ∗ ( − 1 . 7 5 )
− 0 . 0 2 4 ∗
( − 1 . 9 3 )
− 0 . 0 3 1 ∗
( − 1 . 9 2 )
− 0 . 0 3 3 ∗ ∗ ∗
( − 2 . 8 5 )
)
0
. 0 1 0 ( 0 . 6 7 )
0 . 0 0 6 ( 0 . 4 3 )
0 . 0 0 8 ( 0 . 0 5 3 )
− 0 . 0 1 0 ( − 0 . 0 7 )
− 0 . 0 0 7 ( − 0 . 5 7 )
0
. 0 1 8 ∗
( 1 . 7 6 )
0 . 0 2 1 ∗ ∗
( 2 . 0 1 )
0 . 0 2 6 ∗ ∗
( 2 . 3 8 )
0 . 0 2 8 ∗ ∗
( 2 . 2 0 )
0 . 0 3 8 ∗ ∗ ∗
( 3 . 7 6 )
5 5 . 8 8 %
5 4 . 0 3 %
6 1 . 2 9 %
3 9 . 2 9 %
7 3 . 0 6 %
D ( 8 , 2 6 ) =
1 . 7 6 d u ≈
2 . 2 0
d ( 7 , 2 6 ) =
1 . 8 3 d u ≈
2 . 1
d ( 1 0 , 2 6 ) =
1 . 9 1 d u ≈
2 . 4 0
d ( 8 , 2 6 ) =
1 . 9 7 d u ≈ 2 . 2 0
d ( 7 , 4 0 ) =
2 . 1 3 d u ≈
1 . 7 9
c
X 2 ( 1 ) =
0 . 3 6 8 ( 0 . 5 4 4 3 )
X 2 ( 1 ) =
0 . 1 8 0 ( 0 . 6 7 1 )
X 2 ( 1 ) =
0 . 0 6 4 ( 0
. 8 )
X 2 ( 1 ) =
0 . 0 0 2 ( 0 . 9 6 0 )
X 2 =
0 . 2 2 8 ( 0 . 6 3 3 )
c
X 2 ( 2 ) =
1 . 5 0 2 ( 0 . 4 7 2 )
X 2 ( 2 ) =
0 . 7 6 3 ( 0 . 6 8 2 )
X 2 ( 2 ) =
3 . 0 6 2 ( 0
. 2 1 6 )
X 2 ( 2 ) =
0 . 3 0 5 ( 0 . 8 5 8 )
X 2 ( 2 ) =
2 . 6 9 1 ( 0 . 2 6 0 )
E T
F ( 3 , 1 5 ) =
1 . 9 2 ( 0 . 1 6 9 )
F ( 3 , 1 6 ) =
0 . 2 5 ( 0 . 8 6 2 )
F ( 3 , 1 4 ) =
1 . 6 6 ( 0 . 2 2 )
F ( 3 , 1 5 ) =
1 . 1 8 ( 0 . 3 4 8 )
F ( 3 , 3 0 ) =
3 . 3 9 ( 0 . 0 3 )
2 6
2 6
2 6
2 6
4 0
b l e 2
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Public Choice (2007) 131:157–175 171
5.2 Results from the OECD Economic Outlook dataset
As a robustness test, we also use the variables provided by the OECD Economic Outlook
dataset that cover the whole 1960–2000 period and have been illustrated in Figure 2B. Results
are reported in column 5 of Table 3. The new measure of wages and salaries expenditure(∆gwag) again exerts a significantly negative effect. The positive effect of government in-
vestment (∆ginv), on the other hand, is now not significant, while the new measure of transfer
payments (∆gtran) exerts a significantly negative effect at 10% level (compare this with the
insignificant effect of ∆gst in the previous subsection). Therefore, the main result (namely,
that the composition matters) does not change when we use the OECD Economic Outlook
data instead of the WDI data (it should be noted however that the variables in the two datasets
do not measure exactly the same things). Finally, the RESET test rejects the null of a correct
functional form specification. In other words, all regressions for the whole period, 1960–
2000, do not pass this test. Hence, as noted above, it seems that something is missing (see
below in Section 6).
5.3 Summary of the section
When we use disaggregated fiscal policy data, a general message is that wages and salaries
in the public sector are bad for growth. Specifically, when we use the GFS decomposition
over 1972–1998, a rise in the growth rate of wages and salaries by one standard deviation
(or 9.7%) reduces GDP growth by 1.72%. There is also evidence (although less robust) that
public investment as a share of GDP is good for growth, and transfers as a share of GDP are
bad for growth. On the other hand, as it was also the case with total tax revenue as a shareof GDP, various effective tax rates do not seem to matter; this is consistent with the related
literature where the link between taxes and growth is mixed (see e.g. Stokey & Rebelo, 1995;
Park, Philippopoulos, & Vassilatos, 2005).
6 Does the growth effect of the size depend on government quality?
We now explore the well-known prediction (implied e.g. by Barro, 1990) that it is not the size
of government per se that matters to growth, but the mix between size and efficiency/quality.As said in Section 2 above, behind this there are two key issues: first, the effect of fiscal
policy on growth is not monotonic; and second, non-monotonicity is driven by efficiency or
quality in the public sector.
6.1 A measure of public sector quality and econometric specification
We need a proxy for the quality of public sector in Greece, which should have an annual vari-
ation. In Angelopoulos, Philippopoulos, and Tsionas (2006), we have constructed an index of
relative public sector efficiency for a group of 64 countries over four 5-year periods, 1980–
1985, 1985–1990, 1990–1995 and 1995–2000, by following the methodology of Afonso,
Schuknecht, and Tanzi (2005) for the OECD countries. However, most of the data used for
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172 Public Choice (2007) 131:157–175
infrastructure.19 Obviously, this index can only provide a crude approximation of the quality
of public sector; however, it is fortunate that there exists such a variable, which also fulfills
our time-series requirements. All related studies, we are aware of, are cross-section studies
(see Angelopoulos, Philippopoulos, & Tsionas 2006, for a review of the literature).
To get a proxy for the quality/efficiency of public sector, we first take the log of the inverseof Electric Power Transmission and Distribution Losses and denote this as govqual. In turn,
by first-differencing, we get the growth rate of govqual, denoted as∆govqual. Table 1 reports
that ∆govqual is an I(0) variable. As a preliminary step, we just include ∆govqual in our
basic regression (the one in column 3 of Table 2). As can be seen in column 1 of Table 4, by
simply adding efficiency into the growth regression does not alter anything.
To test our main idea, we work in two steps. In the first step, we use our proxy for
government efficiency, ∆govqual, to divide years into efficient and inefficient. In the second
step, we examine whether the effect of government size differs depending on whether we are
in an efficient or an inefficient year.
Consider the first step. When ∆govqual is positive, which means an improvement in thequality of public infrastructure relative to the previous year, we classify the government
in that year as being “efficient”. Conversely, when ∆govqual is negative, we classify the
government in that year as being “inefficient”. This simple classification rule implies that the
Greek public sector is classified as “efficient” in 22 years and as “inefficient” in 18 years,
over the period 1960–2000.20
6.2 Estimation and tests
Given this classification, we move on to the second step by regressinggrowth
on our principalmeasure of the overall size of government (namely, the growth rate of the share of govern-
ment in GDP, ∆govshare) by allowing the size effect to differ between the efficient and the
inefficient sub-sample (denoted respectively as ∆govshareeff and ∆govshareineff ). Results
are reported in column 2 of Table 4. As can be seen, ∆govshareineff is significantly negative
at the 1% level, while ∆govshareff (although negative too) is very small and insignificant.
While ideally one might also like the coefficient on ∆govshareff to be significantly positive
(so as to get a typical Laffer curve result), what is important is that the two coefficients differ
and there are two different regimes. The hypothesis that the coefficients of ∆govshareff and
∆govshareineff are equal is clearly rejected by an F -test; the relative F 1,33 = 18.77 rejects
that null (the p-value of the test is 0.001). Therefore, the growth effect of the public sectordiffers significantly depending on whether the latter has been “efficient” or “inefficient”. Note
that these results are net of any direct effect of ∆govqual on growth since we have controlled
for ∆govqual in the regression (the latter is positive but not significant).
The effects of dummy variables are also affected relative to Section 4 (compare the new
results to those in column 3 of Table 2). That is, the d (1960–1973) dummy is now insignificant
although still positive, while the d (1980–1993) period remains negative and significant. It is
interesting that the d (1994–2000) dummy now turns to be significantly negative. An obvious
explanation is that recent years have been classified as efficient, so that the positive effect on
growth has been already controlled for by the size-efficiency mix.
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Public Choice (2007) 131:157–175 173
Table 4 The quality of public sector and economic growth
Dep. variable: growth (1) (2)
∆govshare −0.186∗∗ ∗ (−3.26) –
∆govshareeff – −0.040 (−0.71)
∆govshareineff – −0.486∗∗ ∗ (−5.84)
∆govqual −0.008 (−0.16) 0.03 (0.08)
d (1960–1973) 0.041∗∗ ∗ (3.26) 0.019∗ (1.71)
d (1980–1993) −0.027∗∗ (−2.24) −0.043∗∗ ∗ (−4.06)
d (1994–2000) −0.011 (−0.78) −0.019 (−1.57)
Constant 0.029∗∗ ∗ (2.81) 0.046∗∗ ∗ (4.97)
R2 67.45% 79.25%
DW statistic d (6,40) = 2.093 d u ≈ 1.79 d (7, 40) = 2.097 d u ≈ 1.79
BG(1) statistic X 2(1)= 0.195 (0.658) X 2(1) = 0.166 (0.683)
BG(2) statistic X 2(2) = 1.184 (0.389) X 2(2) = 2.554 (0.278)
Ramsey RESET F (3, 31) = 3.72 (0.025) F (3,30) = 0.59 (0.627)Observations 40 40
Notes. See Table 2
It is also important to note that the R2 in this model jumps to about 80%. This is a rather
impressive fit. It implies that the growth in the share of government in GDP, when allowing for
a non-linear Laffer curve-type effect, can explain – along with some simple political dummies
– around 80% of the variation of the growth rate over the last forty years. This again highlights
the importance of fiscal policy (now both its size and quality) for macroeconomic outcomes.
Finally, notice that the specification in column 2 of Table 4 passes the serial correlationtests. Also, the RESET test for non-linear functional form cannot reject the null of a correct
specification. Since the RESET tests of the regressions in columns 1–3 of Table 2, column
5 of Table 3 and column 1 of Table 4 (namely, all regressions that cover the whole period,
1960–2000, without taking account of the size-quality mix) reject the null, this adds to our
confidence that there is a Laffer curve pattern from fiscal policy to growth, and this pattern
is captured by our model specification in column 2 of Table 4.
6.3 Summary of the section
Is a larger government size, as measured by the government share in GDP, always bad for
growth? Although this seems to be the case when one ignores efficiency in the public sector,
the results change drastically once we take account of the mix between size and efficiency.
Our regressions show that only when our measure of government efficiency deteriorates
relative to the previous year, a larger government size is bad for growth. It is the significantly
negative effects that dominate over time, this is why on average larger sizes were found to
hurt growth. Therefore, what really matters to growth is the size-efficiency nexus. This is
consistent with the theoretical literature (see e.g. the literature initiated by Barro, 1990) as
well as with empirical evidence for a number of countries (see Angelopoulos, Philippopoulos,
& Tsionas 2006).
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