When the controls of an experiment are lax and the experimenter's conclusion that the independent variable had an effect is not justified, the study lacks _____
a. causal certainty c. a null hypothesis
b. internal validity d. external validity
B
Internal validity depends on sufficient control of all factors in an experiment.
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Daydreaming is most likely to occur during which type of consciousness?
a. divided b. unconsciousness c. focused d. selective e. drifting
Which of the following coefficients of correlation indicates the STRONGEST relationship between two sets of variables?
a. -0.98 b. 0.90 c. 0.00 d. 1.20
Dendrites:
a. may be up to a quarter of a mile long. b. carry messages to cell bodies. c. are primarily responsible for the hypothalamic functions of regulation and motivation of sexual functions. d. are contained within the cell nucleus.
Who is most likely to reach achievement status?
a. Gabriel, whose parents discourage discussion b. Amanda, whose parents give her explicit direction for her choices c. Kathryn, whose parents encourage her to explore alternatives on her own d. Ashley, whose parents set rules with little justification