Which of the following best explains the lack of well-controlled studies on the effectiveness of treatment for anorexia nervosa?
A. Few people with anorexia who are in treatment are willing to participate with bulimics.
B. Few people with anorexia achieve full remission.
C. The high mortality rate with anorexia results in sample sizes that are too small to yield valid conclusions.
D. Few people with anorexia are willing to seek treatment, and they are likely to drop out of treatment prematurely.
Answer: D
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What factor explains the differences between boys and girls in motor performance?
a. Differences are due primarily to biological variables. b. Differences in boys and girls are heritable. c. Boys receive more encouragement and support for participating in sports. d. From birth, girls have less interest in sports than do boys.
The "best" solution in problem solving is determined by the _____ of the solution
a. social context b. efficiency c. practicality d. consequences
Adults in White, middle-class, Western societies tend to use which of the following techniques when speaking to toddlers in order to facilitate the children's language acquisition? a. They emphasize the future and the past so that the child becomes aware of time in his/her speech. b. They use long, complex sentences to extend the child's language abilities. c. They use simplified, redundant
utterances that correspond with the child's interests and comprehensionlevels. d. They tease their children in order to give them a chance to develop a quick wit.
How is the type of neurotransmitter used by a particular neuron determined? a. The postsynaptic (target) cell determines which neurotransmitter the presynaptic cell will release
b. The genes of the presynaptic cell determine which neurotransmitter the cell will use. c. The neurotrophins released by the postsynaptic (target) cell determine the neurotransmitter the presynaptic cell will use. d. Guidepost cells determine the type of neurotransmitter used in particular systems.