A hallmark of experimental studies is
a. the manipulation of time in the presentation of the materials to the subject.
b. the manipulation of only one variable as often as possible to determine the effects of thatvariable.
c. the manipulation of every variable at each stage of the experiment.
d. the manipulation of one or more factors and observation of how these manipulations change the behavior under investigation.
Question 2
Bidirectionality of structure and function refers to
a. an organism's being capable of using either hand or foot.
b. genetic determinism.
c. the interaction of the functional invariants of assimilation and accommodation with cognitiveschemas.
d. structure (e.g., biological substrate) affecting function (e.g., activity) and function affecting structure.
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Very nice definition of time
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