Introduction to Psychology 10th Edition by Rod Plotnik,Haig Kouyoumdjian

تمرين 37

To investigate whether personality changes as people grow older, psychologists study the same individuals at different times; this is called a (a) _____ study. In general, studies have shown that personality is more likely to change if a person is under (b) _____ years old. After that, changes usually involve variations on the same behavioral theme or accompany changes in social roles.