A major disadvantage of cross-sectional research is that
A) age-related changes cannot be examined.
B) participants often drop out before the study is over.
C) factors affecting individual development cannot be explored.
D) practice effects often cause biased findings.
C
Psychology
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Which of the following describes a period of extreme elation that is accompanied by delusions of grandeur?
a) dysthymic episode b) dissociative episode c) hyperinflationary state d) manic episode
Psychology
It takes approximately three times longer for men over the age of 40 to impregnate a partner than it does for men under age 25 . Why?
a. lack of libido b. endometriosis c. decrease in the quantity and quality of their sperm d. their partner's fertility
Psychology