Which of the following is a true statement about the relationship between disease and genes?
A. Only 5% of the people with a mutant form of the huntingtin gene will develop Huntington's disease.
B. Only 50% of the people with a mutant form of the huntingtin gene will develop Huntington's disease.
C. All of the people with a mutant form of the huntingtin gene will develop Huntington's disease.
D. All of the people with a mutant form of a particular gene will develop schizophrenia.
Answer: C
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Sol is investigating the effects of divorce on children's self-esteem. His initial sample consists of a group of 10 five-year-olds, which he plans to follow over a period of at least 15 years. When this group of children reaches age 15, Sol adds a second group of five-year-olds to his study, and plans to follow them for another 15 years. Sol's overall plan is best classified as a _____ research
design. a. correlational b. cross-sectional c. longitudinal d. sequential
What are the three interactive factors that play a critical role in shaping our personality according to social cognitive theory?
A. id, ego, and superego B. cognitive-personal factors, behaviors, and environmental factors C. unresolved desires, dreams, and self-actualization drives D. unconditional positive regard, conditional positive regard, and traits
For most smokers, withdrawal from nicotine causes all of the following symptoms EXCEPT for
a. excessive daytime sleepiness (hypersomnia). b. sweating. c. cramps and digestive upset. d. headaches and irritability.
Research on smokers who have quit shows that
a. once a smoker quits, he or she is unlikely to relapse. b. people go through stages in their readiness to quit. c. most of those who have quit have used professional treatment programs. d. all current smokers are psychologically equivalent in terms of their willingness to quit.