Perception

Question 1

Babies can hear from ____ weeks

Answer 1

around 24

Question 2

Makin and Porter 1989?

Answer 2

• Breast pads from lactating vs non-lactating women
• Place pads on either side of newborn’s head
• 65% of babies show orienting response towards lactating group
  
  • Associated with rooting response

Question 3

Russell 1976 study?

Answer 3

• Infants learn preference for their mother’s breast milk during the first 6 weeks
• % differentiating response for mother’s vs stranger’s milk
  
  • 2 days: 0%
  • 2 weeks: 20%
  • 6 weeks: 60%

Question 4

Which senses are developed prenatally?

Answer 4

• Audition
• Taste
• Touch
• Olfaction

Question 5

Which sense is not developed prenatally?

Answer 5

Vision

Question 6

Baby’s preferences (vision)?

Answer 6

In order from most preferred…

• Faces
• Complex > Simple
• Pattern > plain
• Red > others

Question 7

Preferences for taste changes at what age?

Answer 7

After 4 months.

Before 4 months, babies prefer sweet over salty. Afterwards, they prefer salty over sweet.

Question 8

Werker & Tees, 1984 study?

Answer 8

Phonemic contrasts: Salish (Thompson tribe language) vs. English

English infants’ (6-8 months) distinguishing abilities is level with Thompson adults’ abilities
8-10 months: abilities diminish
10-12 months: gone