Although it is difficult to determine precisely how much of personality is determined by genetics, the results of twin studies suggest that genetics probably accounts for about _______ percent of the variance of adult personality.
A) 85
B) 60
C) 40
D) 5

Question

Quizplus · Accepted Answer

The results of twin studies suggest that genetics probably accounts for about 40 percent of the variance of adult personality. While there is ongoing debate about the exact percentage, most experts agree that genetics plays some role in shaping personality. However, environmental factors, such as parenting and life experiences, also play a significant role in shaping personality.

Although It Is Difficult to Determine Precisely How Much of Personality