Provide two ways that dichotomous groups can be formed.
What will be an ideal response?
Ans: Some groups form naturally (e.g., smokers versus nonsmokers, under 40 versus over 40, Christian versus Muslim, depressed versus not depressed). In other cases, groups are formed by an experimenter (e.g., treatment versus control conditions). We call studies involving experimenter-created groups, experimental studies, and those involving naturally occurring groups, quasi-experimental studies.
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Define short-term memory and describe it in terms of its temporal duration and capacity
What will be an ideal response?
What values are specified by the null hypothesis for a chi-square test?
a. Frequencies for a sample c. Proportions for a sample b. Frequencies for a population d. Proportions for a population
According to the research on the use of diagrams in problem solving,
a. diagrams are often helpful because they can convey information in a clear way. b. a hierarchical tree diagram is a list of steps that must be followed in solving a problem. c. the most effective way to use diagrams is to construct a matrix representing all possible combinations of options. d. people seldom solve problems by using diagrams, because verbal representations are much more appealing.
Major depression and bipolar disorder are both examples of __________ disorders
a) neurotic b) somatoform c) psychotic d) mood