In manipulating independent variables, which types of variables involve variations in the directions that participants receive prior to the study?

a. Environmental variables
b. Instructional variables
c. Task or activity variables
d. Invasive variables

b

Psychology

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Frameworks for explaining various events or processes are known as ________

a) theories b) hypotheses c) experiments d) variables

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Approximately what percentage of American Adults are single?

A) 10% B) 25% C) 40% D) 50% E) 60%

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