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.
Examples of structures in which extensive surface area is important for function.
The most polygynous primates live in groups with many more females than males.
Hydrolysis reactions for some biochemically important phosphate compounds (part 1)
A model for factor-independent termination of transcription
The results from West and Crook's study of memory for telephone numbers
Harvard Alumni Study show who are more physically active in middle adulthood