Exam 7: Control Techniques in Experimental Research

If you are interested in any possible interaction effects between an extraneous variable and the independent variable, which of the following techniques you should use?

How many possible sequences would be needed for complete counterbalancing with three treatment conditions?

Because researchers are generally more concerned with establishing internal validity rather than external validity, they are typically more concerned with ______and less concerned with ________.

Which of the following is the proper sequence of steps in conducting an experiment with individual matching?

When would an experimenter want to use "yoked" matching of participants?

Two middle school teachers want to find which of three new violence prevention programs would be most effective in their school. From September through November, program #1 is in effect. It is then replaced by program #2 from December through February, and then program #3 runs from March through May. In June the teachers examined fight reports for the school year and find that there were 14 fights in the fall, 10 fights in the winter, and 6 fights in the spring. They conclude that program #3 is most effective is stopping violence. Which of the following is a plausible rival hypothesis to their interpretation?

Incomplete counterbalancing means that

Dr. French makes sure that she has multiple video cameras recording her observation room during data collection. She also has multiple research assistants review the video recordings after the data are collected. This is to control for

If an experiment had four conditions A, B, C, and D) and each participant is to be measured under each condition, intragroup incomplete counterbalancing might be the best method to use. Which of the following describes this method?

When one of the matching techniques is used,

What is the purpose of "blinding" the experimenter to the conditions) his or her participants are experiencing?

Although the extent to which experimenter effects influence study outcomes is controversial, techniques have been developed to at least partially counteract these effects. Which of the following is the LEAST likely to be used?

Suppose you do find an extraneous variable that could have great influence on your results, beyond the influence of the independent variable. You could increase the experiment's sensitivity by

Which of the following is not a typical source of order effects?

must be used with repeated measures designs.

Participants volunteered to be in a study of the effects of vitamin supplements. The experimenter was given an unlabeled syringe containing saline or a vitamin supplement to inject into the participant. The participants were not told if the injection they received is the vitamin supplement or a placebo. This experiment is using an) ______technique.

The main disadvantage of intrasubject counterbalancing is

In within participants experimental designs, participants are tested under more than one condition. A carryover effect may confound the results if

occur when a treatment condition may affect participants' performance in a later condition in one way and in a different way when followed by a different condition.

Dr. Bassuk is conducting a pilot study for his newest research project. During this pilot study, he repeatedly stops the participants and interviews them. He asks them to report what they were thinking during each portion of the study. This group of participants in the pilot study can also be called a