What is the difference between a within-participants design and a between-participants design?
a. the former exposes the participants to more than one level of the independent variable
b. the former involves all participants experiencing all levels of the independent
variable
c. the latter exposes all participants to all levels of the independent variable
d. the latter involves research participants testing each other, rather than the experimenter testing them
Question 2
Stan is conducting a class research project in which he randomly assigns participants to two groups:
one group of participants remains sober during the study and the other group of participants consumes 2 ounces of 75 proof alcohol. The dependent or outcome variable is manual dexterity. What statistical test should Stan use to determine whether the two groups differ in manual dexterity after the manipulation?
a. independent samples t test
b. correlated t test
c. chi square
d. two-way analysis of variance