Gibson and Walk Flashcards

1
Q

What is the theory?

A
  • depth cues and motion parallax
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2
Q

what is motion parallax?

A

objects closer to you moving faster = more important for animals

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3
Q

what is the aim?

A

to determine the age that infants start to show the ability to use visual stimuli for depth perception
AND
to see if this ability within animals and humans is innate

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4
Q

what is the method?

A

lab experiment with repeated measures

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5
Q

what is the iv?

A

called by mother on deep side and shallow side of visual cliff

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6
Q

what is the dv?

A

if the baby crawled to mother or not

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7
Q

what is the sample?

A

36 infants (6-14 months) - mothers also participated

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8
Q

what are examples of animals used?

A

rats, chicks, kids, lambs, aquatic turtles, kittens

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9
Q

what is the apparatus used?

A

a visual cliff
- board in the middle
- shallow end = glass with patterned surface directly underneath
- deep end = glass with patterned surface on the floor
- patterned glass = red and white squares

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10
Q

what are some controls?

A
  • sometimes used a solid grey pattern
  • removed reflection for animals
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11
Q

what are some key findings about infants?

A
  • only 27 infants moved from the board & all went to shallow side at least once
  • 3/27 went to the deep end = suggests have no depth perception
  • some babies cried as they could not get to their mothers due to the chasm of the deep end
  • often touched the glass of the deep end but trusted visual perception that it was dangerous
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12
Q

what are some key findings about animals?

A
  • aquatic turtles performed the worst - utilise motion parallax more - due to being water based
  • by 24 hrs old chicks have depth perception
  • rats used their whiskers to determine if a surface is solid and trusted this rather than depth perception (but still have depth perception when whiskers held back = control)
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13
Q

evaluate according to reliability

A

strengths
- lab experiments = standardised = replicable = internal reliability e.g., same visual cliff
weaknesses
- some toys don’t help everyone’s perception = unreliable

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14
Q

evaluate according to validity

A

strengths
- construct validity - high controls = causality
- ecologically valid - mothers being one to call over
weaknesses
- lack population validity - small sample (36 infants, 6-14 months, USA)
- no ecologically valid - artificial and task lacks mundane realism
- individual differences

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15
Q

evaluate according to data

A

strengths
- quan data = objective + easy to analyse and compare e.g., 3/27 crawling to deep side
- qual data = provides reasoning behind perceptual behaviour e.g., babies crying / touching the glass
weaknesses
- quan data = no reasoning
- qual data = subjective interpretation - individual differences

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16
Q

evaluate according to samples and ethnocentrism

A

strengths
- 6-14 months - can see development of depth perception
weaknesses
- small sample
- only western perspective = ethnocentric
- age bias 0-6? 14-24?

17
Q

evaluate according to methodology - snapshots & longitudinal

A

strengths:
- snapshots = easy to complete
- less demand characteristics
- less EVs influence
- less attrition
weaknesses:
- not enough detail / development of an individual over time

18
Q

evaluate according to ethics

A

strengths
- informed consent from mothers
- were not deceived
- confidentiality - kept anonymous
weaknesses
- no informed consent from infants or animals
- PFH issues - babies crying BUT babies always cry
- no right to withdraw

19
Q

evaluate according to social sensitivity

A

is socially sensitive
- blames parents and nursery teachers for any perceptual deficits / slower development
not socially sensitive
- leads to practical applications - improve development through intervention

20
Q

evaluate according to usefulness

A

useful
- parents and teachers can use interventions for struggling children
- reliable
- valid
not useful
- unreliable
- invalid

21
Q

evaluate according to psychology as a science

A

scientfic
- high control
- quan data
- reliable
- valid
not scientific
- qual data
- unreliable
- invalid

22
Q

evaluate according to reductionism

A

weaknesses
- most studies focus on one type of perception e.g., visual
- over reliance on nurture / situational = oversimplification
strengths
- scientific - causality
- IVs
- useful

23
Q

evaluate according to determinism

A

strengths
- make predictions = scientific
- practical applications
weaknesses
- age / exposure to environment
- socially sensitive = labelling

24
Q

evaluate according to nature vs nurture

A

nature
- rats = depth perception is innate
nurture
- chicks develops in 24 hrs
- learn depth perception when crawl then again when walking

25
Q

evaluate according to situational vs dispositional

A

situational
- develops with locomotion / environment = learnt
dispositional
- could be individual differences / delay in development = not just situation