Question

Costa and McCrae suggest that personality traits stop changing by age 30, after which they appear to be "set in plaster." Which of the following gives validity to their claim?
a. Their studies were cross-sectional.
b. Their correlations were high.
c. Many additional research studies have been conducted that support their claim.
d. Laypeople's observations of the personality traits of others supports their claim.

Answer

This answer is hidden. It contains 1 characters.