Researchers believe that the Flynn effect __________.

A. is caused by cheating on the I.Q. test
B. has just one cause
C. is a result of the combination of a number of factors
D. is caused by unknown factors


Answer: C

Psychology

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Children's gender schemas are most rigid during the ages ________

a. 2–3. b. 5–7. c. 8–12. d. 13–16.

Psychology

The most common of all the sexually transmitted infections in the U.S. is:

a. AIDS. b. genital herpes. c. HPV. d. chlamydia.

Psychology

In the United States, most deaths of children ages 1 to 4 can be attributed to

A) car accidents. B) SIDS. C) fires and drowning. D) diseases and illnesses, such as cancer and heart disease.

Psychology

Little can be done to improve the behavioral and mental skills of children who have intellectual disabilities

a. True b. False

Psychology