One problem with studying personality change over time is ...

[serike]

One problem with studying personality change over time is selective attrition, meaning that
 
  a) less healthy people are more likely to drop out of studies.
   b) people have imperfect recall of their younger lives.
   c) effects due to aging can't be separated from effects due to period of birth.
   d) extraordinary experiences are more likely to be remembered than ordinary ones.

Question 2

One potential use of Thurstone's method of absolute scaling in test development would be to
 
  a) add items at the upper and lower levels of the scale.
   b) equate scores for different age groups.
   c) evaluate item bias by gender and race.
   d) check for consistency of domain.

[hugthug12]

Answer to Question 1

a

Answer to Question 2

a

[serike]

Excellent

[lindahyatt42]

TYSM