Infant Perception

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Infant Perception
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Major Developmental Aspects

• Contrast sensitivity -
• Visual acuity -
• newborn (4 - 10 inches)
• 3 mo (36 inches)
• 1yr (100 ft)
• Accommodation -
• Peripheral Vision -
• Binocular Vision -

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Color Perception

• Chromatic Intensity
• Rhodopsin
• Iodopsin
• Chromatic Adaptation
• Color Preference

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Major Developmental Aspects

• Visual Fixation -
• Tracking -
• Accomplished by the ocular-motor system
• Divided into two eye movement systems
• Smooth pursuit -
• Saccadic eye-movement -

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Depth Perception

• Two types
• Static
• Dynamic

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Gibson (1960) Visual Cliff
Basically, infants are capable of gathering depth
clues during the first year of life
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Other Sensory Modalities

• Auditory -
• Olfactory -
• Gustatory -
• Proprioceptive System -
• Haptic Perception

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Haptic Perception

• Ability to glean information from objects by
  manipulation as opposed to vision
• temperature
• size
• texture
• hardness
• weight
• shape

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Developmental Progression

• Manipulative ability influences haptic perception
• Begins during the first few months of life
• Three Phases
• Phase 1 - baby clutches object in fist (birth to
  3 months)
• temperature, size, and maybe hardness

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Developmental Progression

• Phase 2 - at about 4 months baby will poke,
  scratch, rub, wave, and bang objects against a
  surface
• hardness, texture, and lastly weight
• Phase 3 - by about 9 or 10 months baby can sit up
  and use bimanual manipulation
• shape