The practice of repeating an experiment that has already been done to determine whether the same effect is observed is called
a. regression.
b. replication.
c. randomization.
d. counterbalancing.
Why is an ABAB reversal design better than an ABA reversal design?
What will be an ideal response?
In an experiment examining the effects of size of plate on amount of food eaten, one group of participants is measured after eating food on 12-inch plates. Another group of participants is measured after eating food on 10-inch plates. This is an example of a ____ design.
a. single-subjects
b. between-subjects
c. within-subjects
d. matched groups
In what level of measurement is there a meaningful absolute zero?
a. nominal
b. ordinal
c. interval
d. ratio
A researcher wants to know whether a new drug reduces anxiety. Forty participants who suffer from anxiety disorder are assigned randomly to one of two groups. One group gets the new drug and the other group gets a placebo. Neither group knows which they receive. After 30 days on the drug, their anxiety levels are measured. In this experiment, is the independent variable and is the dependent variable.
a. anxiety, the new drug
b. the new drug, the placebo
c. anxiety, the placebo
d. the new drug, anxiety
Identify the three types of nonequivalent control group designs discussed in the text noting possible advantages or disadvantages of each.
What will be an ideal response?
In an experiment examining the effects of size of plate on amount of food eaten, one group of participants is measured after eating food on 12 inch plates. A week later, the same group of participants is measured after eating food on 10 inch plates. This is an example of a ____ design.
a. single-subjects
b. between-subjects
c. within-subjects
d. matched groups
In what level of measurement is the distance from one attribute to another meaningful?
a. nominal
b. ordinal
c. interval
d. ratio
One technique in psychological experiments is to keep the experimenter from knowing the research hypothesis or the experimental condition of the subjects currently being tested. This helps to prevent the problem of
a. ceiling effects.
b. carryover effects.
c. placebo effects.
d. experimenter effects.
Identify the three types of single-group designs discussed in the text noting possible advantages or disadvantages of each.
What will be an ideal response?
Quick Reply
