Infancy SV PPT - Infancy Looking'Technique'Lab'Setup keep...

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Unformatted text preview: Infancy Looking'Technique'Lab'Setup keep parent shielded from actual stimuli being presented so they dont influence effect of child Preferential'Looking look how long a baby looks at two things presented side by side Text habituation - decrease response to certain stimuli measures how long baby looks at pic, once baby looks away, they change the picture to something else Dishabituation once the baby stops giving attention to bird pictures, present baby with something different (i.e. a dinosaur) and watch them start paying attention again (called dishabituation) 113 90 68 45 23 0 Tr1 Tr2 Tr3 Tr4 Tr5 Test Violation5of5Expectancy baby habituates to a scene and then a box is placed in between it. i.e. bar going back and forth, box placed the blocks the bar; babies sometimes see this impossible event of the bar passing through the box; babies look at this impossible event longer, shows that babies know something about how this is not possible so theyre like wtf is going on Method Violation5of5expectancy Preferential5looking Habituation Procedure Measure'“surprise”'<Show' neutral'event'until'“bored”' then'measure'look'time'to' possible'and'impossible' events Measure'“preference”'< present'two'stimuli' simultaneously' the'one'the' baby'looks'at'the'most'is' the'“preferred”'stimuli Measure'differentiation'< show'stimuli'until'“bored”' then'measure'look'time'to' new'stimuli William'James'(1842<1910) “The baby, assailed by eyes, ears, nose, skin, and entrails at once, feels it all as one great blooming, buzzing confusion” Hearing Hearing ! Infants only minutes old will startle with a loud noise ! They will also turn their heads toward the source of a noise (audio localization) Hearing Preferences ! Human voice over other sounds ! “Motherese”(Infant-Directed-Speech) ! Familiar ! Own voices (mom, dad) language when sound change occurs, baby turns head Head<Turn'Technique Pre<linguistic'Speech'Perception Hindi Nthlakapmx babies stop looking over after about 10ish months because they have lost the ability to tell the difference Perception'Tunes'in'Other'Ways'Too can tell the difference in human faces; cannot tell the difference between chimpanzees; THIS HAPPENED ABOUT 10 MONTHS OLD: age where you become v good at distinguishing different human faces but become v bad at distinguishing chimp faces Infants’ Visual Acuity Visual'Acuity • Visual'acuity'develops'rapidly'in'infants Visual5acuity Experimenter peeks through hole in cardboard poster to see where baby is looking longer. Either has stripes or blank gray slate. If baby looks at stripes longer, means can see it. If they can't see it, they will look at both the same. Wider black bars are easier to see - we can test acuity by manipulating the size of the bars. Touch Smell • Infant' sense'of'smell'draws'them'to'their'mothers.' • Infants' are'sensitive'to'the'smell'of'breast'milk. Taste • Sensitivity'to'taste'and'smell'develops' before'birth. • Newborns'innately'prefer'sweet'flavors. • Exposure'to'foods'in'utero'influences'food' preferences. Intermodal'Perception • Infants' are'able'to'combine'information'from'two'or' more'senses. • Very'young'infants'link'oral'and'visual' experiences. • Infants' at'about'4'months'can'integrate'speaking' sounds'with'a'picture'of'lips'moving. The'Infant’s'Expanding'World • Self<locomotion:' At'8'months'or'so,'infants'begin'to' move'themselves'around'in'the'environment.' By' 13–14' months'they'are'walking. • Infants' integrate'perceptual' information'with'each' new'motor'activity'they'develop. The5Visual5Cliff ...
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