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Child Psychology

Perceptual development in children and animals

  • 3 things to know
  • Component 03

Overview

Recall questions on perception and sensation, nativist and empiricist accounts, depth cues and size constancy, newborn vision, preferential looking, habituation and high-amplitude sucking, animal studies including Blakemore and Cooper and Held and Hein, and cross-cultural studies.

What you need to know

Answer each one before you reveal it.

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Key term

How is habituation used to test what a baby can perceive?

Process

What is the high-amplitude sucking procedure?

Key term

How does perception differ from sensation?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    How does perception differ from sensation?

    Model answer

    Sensation is the detection of physical energy by the sense receptors, while perception is the brain's organisation and interpretation of that information into a meaningful experience.

  2. 2

    How do nativist and empiricist accounts of perception differ?

    Model answer

    Nativists argue that the basic abilities to perceive depth, form and constancy are built in and present from birth, while empiricists argue that they are assembled through experience of acting on the world.

  3. 3

    What is retinal disparity?

    Model answer

    Because the eyes are set apart, each receives a slightly different image of the same scene, and the brain uses the size of that difference as a cue to how far away an object is.

  4. 4

    Name three monocular depth cues.

    Model answer

    Relative size, texture gradient and occlusion are all monocular depth cues.

  5. 5

    What is size constancy?

    Model answer

    Size constancy is perceiving an object as staying the same size as it moves nearer or further away, even though the image it casts on the retina grows or shrinks.

  6. 6

    How good is a newborn's vision, and how does it change?

    Model answer

    Acuity at birth is very poor and only objects roughly 20 to 30 cm away are in focus, which is about the distance to a carer's face; acuity then improves rapidly towards adult levels during the first year.

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