Huntington's disease is caused by
A) a single dominant gene.
B) a neurotoxin.
C) an infection.
D) a single recessive gene.
E) a decline in dopamine.
Answer: A
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Which pair of classes of psychological disorders listed below BOTH show a strong influence of genetic factors on the development of the disorders?
a. Eating disorders and dissociative disorders b. Mood and eating disorders c. Schizophrenic and dissociative disorders d. Mood and schizophrenic disorders
An important factor that helps children develop their syntax is that
a. they develop fast mapping at an early age. b. they become skilled at overextensions. c. their working memory increases, allowing them to produce more combinations of words.. d. they become less self-centered, so that it becomes easier to convey a request to another person.
Rick does some activities better using his right hand, while he performs better on other tasks using his left hand. Rick would be described as
a. being moderately right-handed. b. being moderately left-handed. c. being ambidextrous. d. having inconsistent handedness.
While the exact causes for PMDD remains unclear, it is often blamed on ____
a. physiological factors, such as hormones, neurotransmitters, and brain mechanisms b. malformed or underdeveloped female reproductive organs c. emotional factors d. general poor health