HOT ROC:HOT ROC:Comparing Subjective Comparing Subjective

InformationInformation Form groups of fourForm groups of four For each of the following list, rate as a For each of the following list, rate as a

percentage the amount that environment percentage the amount that environment and heredity influence the traitand heredity influence the trait (ex. Intelligence: environment 60%, heredity (ex. Intelligence: environment 60%, heredity

40%)40%) 1. Body build1. Body build 6. Handedness6. Handedness 2. Intelligence2. Intelligence 7. Height7. Height 3. Personality3. Personality 8. Musical ability8. Musical ability 4. Mathematical ability4. Mathematical ability 9.Longevity9.Longevity 5. Baldness5. Baldness

Nature v NurtureNature v Nurture

Reading Questions from pages 174-Reading Questions from pages 174-176176

Twin studies: unitedstreamingTwin studies: unitedstreaming What can this information tell us?What can this information tell us? How does our upbringing influence How does our upbringing influence

our ability to judge and process our ability to judge and process information? information?

Sensation & PerceptionSensation & Perception

Sensation Sensation DefinitionDefinitionWhat occurs when a What occurs when a

stimulus activates a stimulus activates a receptorreceptor

How many senses are there?How many senses are there?5 Senses5 Senses

Sight, Hearing, Smell, Taste Sight, Hearing, Smell, Taste & Touch& Touch

Absolute Absolute ThresholdsThresholds Weakest detectable sensationWeakest detectable sensation

Examples Examples (do not write down)(do not write down)Sight- Seeing a candle flame 30 miles Sight- Seeing a candle flame 30 miles

away on a clear nightaway on a clear nightHearing- Hearing a watch ticking 20 Hearing- Hearing a watch ticking 20

feet awayfeet awayTaste- 1 teaspoon of sugar dissolved in Taste- 1 teaspoon of sugar dissolved in

2 gallons H2O2 gallons H2OSmell- 1 drop of perfume in a 3 room Smell- 1 drop of perfume in a 3 room

househouseTouch- Feeling a bee’s wing fall 1 cm Touch- Feeling a bee’s wing fall 1 cm

onto your cheekonto your cheek

Perception Perception DefinitionDefinition

Organizing sensory info. Organizing sensory info. into meaningful into meaningful experiencesexperiences

Brain tries to make sense of Brain tries to make sense of large amount of stimulilarge amount of stimuli

Creates “wholes” out of bits Creates “wholes” out of bits of info. (Gestalt)of info. (Gestalt)

Perceptual SetPerceptual Set Past experiences and Past experiences and perceptions create a perceptions create a framework through framework through which you view the worldwhich you view the worldEx “I perceive all old Ex “I perceive all old people as kind b/c my people as kind b/c my grandma is kind.”grandma is kind.”

Simplicity Simplicity (Reification)(Reification)

We see the We see the simplest simplest shape shape possible possible

ProximityProximity When When objects are objects are close close together, we together, we tend to tend to perceive perceive them as them as groupsgroups

SimilaritySimilarityWhen When similar and similar and dissimilar dissimilar objects are objects are mingled, we mingled, we see similar see similar objects as objects as groupsgroups

ClosureClosure When we When we see a see a familiar familiar pattern or pattern or shape shape w/missing w/missing parts, we fill parts, we fill in the gapsin the gaps

Continuity Continuity We tend to We tend to see see continuous continuous patterns, not patterns, not disrupted disrupted ones ones

Figure and Figure and GroundGround

DiscriminatioDiscrimination between a n between a figure and itsfigure and its backgroundbackground

InvarianceInvariance

Simple geometrical Simple geometrical objects are objects are recognized recognized independent of independent of rotation, translation, rotation, translation, and scale; as well as and scale; as well as several other several other variations such as variations such as elastic deformations, elastic deformations, different lighting, different lighting, and different and different component features. component features.

Other Interesting Other Interesting Perception Perception TechniquesTechniques

Count the number of Count the number of “F’s”“F’s”

FEATURE FILMS ARE THE RE-FEATURE FILMS ARE THE RE-

SULT OF YEARS OF SCIENTI-SULT OF YEARS OF SCIENTI-

FIC STUDY COMBINED WITHFIC STUDY COMBINED WITH

THE EXPERIENCE OF YEARSTHE EXPERIENCE OF YEARS

FEATURE FILMS ARE THE RE-

SULT OF YEARS OF SCIENTI-

FIC STUDY COMBINED WITH

THE EXPERIENCE OF YEARS

Answer: 6

Most people see 3, but don’t notice the f’s on OF. It appears that we process those f’s as v’s.

Rene Magritte’s Rene Magritte’s “The Human “The Human Condition”Condition”

Forcefully Forcefully demonstrates the demonstrates the paradoxes of paradoxes of perception through perception through paintingpainting

Size ConstancySize Constancy

The Blakemore-Sutton EffectFirst, judge whether these two grating have the same size bars.

The Blakemore-Sutton EffectLook back and forth across the central bar.? Count to about 45 second and then press the mouse.

The Blakemore-Sutton EffectDo the gratings still have the same bar size?

Simultaneous Simultaneous ContrastContrast

PixelizPixelizeded

FamouFamous s

PersonPerson

Induced Motion:Induced Motion:

Does the dot Does the dot appear to move?appear to move?

 

Motion Parallax:Motion Parallax:

As we move, objects that As we move, objects that are closer to us move are closer to us move

farther across our field of farther across our field of view than do objects that view than do objects that

are in the distance. are in the distance. 

Mueller-Lyer Mueller-Lyer IllusionIllusion

Ouchi Apparent Ouchi Apparent Motion IllusionMotion Illusion

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QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQPPQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOOQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ

Optical Illusion (Thanks Optical Illusion (Thanks Zach)Zach)

http://www.youtube.com/watch?http://www.youtube.com/watch?v=vzSRVgF501M&feature=related v=vzSRVgF501M&feature=related