Identify which of the following sentences is grammatically correct.
a. The affect of alcohol on driving performance was studied.
b. Alcohol significantly effected driving performance.
c. Alcohol had a significant effect on driving performance.
d. Based on the results, a change in the alcohol policy has been affected.
Hannah has developed a scale for assessing social interaction among children with moderate to severe developmental disabilities. Because it is in the early stages, she trains two research assistants in how to use the scale, has them both observe the same children, and compares the scores they give the children. Hannah is assessing ____ reliability.
a. inter-rater
b. test-retest
c. parallel-forms
d. internal consistency
Which of the following is an ethical obligation of psychologists who use animal subjects?
a. To comply with all laws and professional standards for the care of animals used for research
b. To maintain the health of the animals and to minimize pain
c. To ensure that all those who use the animals have been trained in their care, use, and maintenance.
d. All of these apply
Standardizing procedures, standardizing treatment settings, and limiting individual differences all have the effect of ____.
a. reducing variance between treatments
b. increasing variance within treatments
c. increasing variance between treatments
d. reducing variance within treatments
Explain when you would use the Kruskal-Wallis test versus the Friedman test.
What will be an ideal response?
Cohen's kappa is used to overcome limitations associated with reliability assessed using the ____ method.
a. inter-rater
b. split-half
c. average inter-item correlation
d. average item-total correlation
Which of the following is not one of the reasons why research participants are debriefed following an experiment?
a. Any questions or misunderstandings that the participants may have about an experiment can be cleared up by the experimenter.
b. Unintended negative effects of an experimental procedure (e.g., embarrassment) can be corrected or minimized by the experimenter.
c. To provide information to participants about after-care available to them in the event that there are more lasting effects of their participation in an experiment.
d. When deception has been used, to ensure that the participants did not discover the true purpose of the experiment.
What are the assumptions of the Wilcoxon rank-sum test?
What will be an ideal response?
Increasing variance within groups ____ the likelihood of finding a difference between the treatment conditions.
a. increases
b. decreases
c. does not affect
d. increase, then decreases
Cronbach's Alpha is used to overcome limitations associated with reliability assessed using the ____ method.
a. inter-rater
b. split-half
c. average inter-item correlation
d. average item-total correlation
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