Cody volunteers with a shelter for homeless families. The shelter wants to improve their community visibility and, hopefully, increase donations. He has no budget to speak of. His best choice for methodology is a(n) ____.
a. personal interview
b. phone interview
c. mail questionnaire
d. drop-off survey
Confounding can occur
a. only in small n designs.
b. only in experiments with one independent variable.
c. only in factorial experiments.
d. in any experimental design.
A clinical psychologist measures body satisfaction for a group of clients diagnosed with anorexia nervosa each day for one week before and for one week after the psychologist begins a series of group therapy sessions. This is an example of a(n) ____ design.
a. time-series
b. interrupted time-series
c. equivalent time-samples
d. pretest-posttest design
Eric is conducting a survey that asks about the use of illicit substances, and he recognizes that for many individuals, this is extremely sensitive information. Which format would best serve his needs?
a. group questionnaire
b. drop-off survey
c. focus group
d. personal interview
In an experiment, confounding occurs when
a. more than one independent variable is manipulated.
b. an uncontrolled variable covaries with an independent variable.
c. an interaction occurs between two independent variables.
d. an interaction occurs between three or more independent variables.
A pretest-posttest design (OXO) is considered to be a(n) ____.
a. experiment
b. nonexperimental design
c. nonequivalent groups quasi-experimental design
d. time series quasi-experimental design
Although experts are downplaying the health effects of a recent water contamination incident, activists believe the effects were substantial. They want to conduct a survey, and they are particularly concerned about ensuring that as many people as possible complete their instrument. Which methodology typically provides the best response rates?
a. group questionnaire
b. phone interview
c. mail questionnaire
d. e-mail questionnaire
When the time between two signals to respond is very short, the response to the second stimulus
a. speeds up.
b. is more accurate.
c. slows down.
d. remains the same compared to longer intervals.
The pre-post designs are similar to within-subjects designs; however, in a pre-post design, it is impossible to ____.
a. randomly assign participants
b. counterbalance order of treatments
c. control for differential effects
d. generalize the results
Angela is conducting a survey about popular fast foods. She is using several different 11-point rating scales for issues such as how good foods taste, how attractive they look, how good they smell, how healthy they are, and whether they are worth their price. Her best choice for methodology is a ____.
a. group questionnaire
b. phone interview
c. focus group
d. personal interview
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