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
D
You might also like to view...
In male identical twins, if one of the twins is gay, the other has about a __________ percent chance of also being gay.
A. 50 B. 25 C. 75 D. 100
One criticism of the James-Lange theory of emotion is that:
A. sometimes we feel emotions and we are not aroused physiologically at all B. not everyone is aroused the same way by a given emotional experience C. even single-cell organisms experience emotion D. different emotions do not necessarily have distinct physiological patterns
In a(n) _________ relationship, both or all parties have a stake in continuing the relationship
a. interactive b. interpersonal c. interdependent d. incongruent
Culture differences in early experiences of infants appear to have some impact on how quickly infants attain certain developmental milestones
Indicate whether the statement is true or false