An important reason for using random assignment in a study with independent groups is to
a. prevent any systematic differences between groups on extraneous variables.
b. be able to generalize to broader populations.
c. rule out competing interpretations of any differences we find.
d. a and c
Question 2
If we built on Doob and Gross's study of horn-honking behavior to compare the time it takes for people to honk at an older car versus the time to honk at an expensive newer car, we could set it up as
a. an independent sample design.
b. a repeated measures design.
c. neither a nor b
d. It could be designed either way, depending upon our needs.
A study by Seehausen and van Alphen involving the effects of male coloration on female choice in Afr
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Crying Frequency in the Early Months In their first months of life, infants often cry for no appare
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Schematic representations of (a) random, (b) alternating, (c) block, and (d) graft copolymers.
The Prison Study