Studies have found that life stress __________ is associated with higher degrees of methylation in genes involved in brain development.
A. after age 5
B. at any point in the life span
C. never
D. in the first four years of life
Answer: D
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An independent sample t-test is considered a ______ because it involves the comparison of two separate and independent samples.
A. between-subjects design B. between-groups design C. within-subjects design D. within-groups design
When walking outside, your hands get so cold that they hurt. You take a pair of gloves out of your backpack and put them on, ending the pain. Putting on the gloves is
a. negatively reinforced. b. a form of punishment. c. positively reinforced. d. a type of response cost.
In It's In the Bag, the study of hypocrisy and condom use, the commitment manipulation involved
(a) wearing a T shirt with information about HIV printed on it (b) giving money to support research into HIV (c) telling at least three friends about HIV (d) making a videotape about HIV for use in high schools
Which statement is most true regarding elicited imitation paradigms?
A) The researcher asks infants to imitate behaviors that are inherently reinforcing. B) The researcher may specifically ask the infant to imitate a series of behaviors and later ask them to imitate the same behaviors. C) The infant's behavior determines the rate of stimulus presentation. D) Most researchers that use the paradigm want to determine if infants can locate objects that have been hidden.