In an experiment it was found that newborn rats who were genetically predisposed to be skittish, nervous, and highstrung would develop into calm, exploratory, and stressresistant adult rats when raised by genetically unrelated, attentive mothers. Although the rats' DNA did not change, the chemicals that controlled their gene expression did change, a phenomenon called:
a. · epigenetic change.
b. · allele variation.
c. · recessive gene mutation.
d. · dominant gene mutation.
a. · epigenetic change.
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Digit span is one measure of capacity of
A. short-term memory. B. long-term memory. C. sensory memory. D. long-term semantic memory.
The ability to predict beforehand whether one will be able to remember something is called
a. déjà vu. b. episodic memory. c. consolidation. d. the feeling of knowing.
Which of the following is NOT an effective counseling skill?
a. asking closed questions b. pausing five seconds or more before responding to the person c. accepting the person's frame of reference d. giving feedback by restating what the person has said
If a researcher concludes that the independent variable did not cause the dependent variable, it might be because the causal relationship really does not exist between the variables, or it may be that _____
a. alpha was set too low c. the researcher made a Type II error b. the power of the experiment is too low d. all of these could be true