Visual Development Flashcards
How do newborns see at birth?
Poor visual acuity, see in gray scales, poor visual scanning, perceptual constancy (cubes), preference for faces
Which visual ability develops at 2 months?
Colour perception appears (red first)
Which visual abilities develop at 4 months?
Can track slowly moving objects
Object segregation (rod and box)
Binocular depth perception
Which visual ability develops at 5 months?
Adult-like colour perception
Which visual abilities develop at 6 months?
Become face generalist
Monocular depth perception (visual cliff experiment)
Which visual abilities develop at 8 months?
Adult like visual acuity and visual scanning
Which visual ability develops at 9 months and why?
Become face specialist because of perceptual narrowing
When is the sensitive period for binocular depth perception?
from birth to 3yo
Explain perceptual narrowing
Because of synaptic pruning (destruction of synaptic to increase efficiency of neural communication)
-better at distinguishing between familiar stimuli
-decline in ability to distinguish between unfamiliar stimuli
What is the other race effect?
exposure effect
Around 9 months-> become better at distinguishing between faces of own racial group
What is intermodal perception?
Coordinated perception of a single object through 2 or more sensory systems
What is an experiment that shows the interaction between touch and vision in newborns?
Preferential looking paradigm with pacifiers
What is an experiment that shows the interaction between auditory info and vision in infants?
Preferential looking paradigm with peekaboo
What is the difference between perceptual and conceptual categorization and at what age do they appear?
Perceptual categorization-> grouping things by shape
- present at birth
Conceptual categorization-> group things by shared functions
-appears at 9months
What are some limits of perceptual categorization?
- hard for exceptions (snail or boat)
- mistakenly put objects in the same category (plane and bird)
