Whether a segment of DNA is relaxed or condensed—and therefore able or unable to be activated—is influenced by epigenetic ______.
a. histones
b. inheritances
c. alleles
d. marks or tags
Ans: D
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In single-subject research, a group of observations of the same individual under the same conditions is known as a ____
a. time series b. phase c. sequence d. data set
An environment in which important variables can be controlled is called a(n):
a. open system. b. closed system. c. quasi-experimental design. d. field experiment.
Which of the following conditions is conducive to creating a groupthink effect?
a. the illusion of disagreement b. a weak leader c. failing to critically evaluate ideas d. members who do not like each other
When Ann went to her doctor, he gave her a hearing test. During the test, the doctor presented tones to Ann through earphones. The tones varied only along the loud-soft dimension (from very loud to very soft)
The doctor asked Ann to raise her hand whenever she heard a sound. The doctor was testing Ann's ______. a. auditory convergence c. absolute threshold b. refractory threshold d. difference threshold