Twenty-month-old Hannah realizes that her mother still exists ...

[renzo156]

Twenty-month-old Hannah realizes that her mother still exists even when Hannah cannot see her. What cognitive achievement has Hannah mastered?
 
  a. egocentrism
  b. object permanence c. conservation
  d. animistic thinking e. centration

Question 2

Weber's law suggests that
 
  a. absolute threshold measurements underestimate true perceptual sensitivity. b. difference thresholds are a constant proportion of the original stimulus.
  c. difference thresholds are a constant quantity.
  d. difference thresholds decrease as stimuli increase. e. difference thresholds increase as stimuli decrease.

[juwms]

Answer to Question 1

b

Answer to Question 2

b

[renzo156]

Thanks for the timely response, appreciate it

[peter]

Excellent