Terms in this set (51)

A hospital-based clinician is conducting an experiment with patients with aphasia. She is assessing the efficacy of a new therapy kit, The Basic Object Memory Builder (The BOMB), in increasing the memory skills of her patients. The experimental and control groups have been carefully matched on all variables. Halfway through the experiment, the clinician finds that many of the experimental subjects go to a local senior citizens' center several times a week for Bingo and other games. There are refreshments afterward, and a group of high school student volunteers comes and acts as conversational partners with the subjects. None of the control subjects go to the senior citizens' center. At the end of the experiment, the clinician finds that the subjects in the experimental group who were treated using The BOMB have improved significantly in their memory skills compared to the control subjects, who have been treated with more traditional memory therapy techniques. What can the researcher safely conclude from her study?

A. The BOMB was more successful in helping the experimental patients improve their word memory skills than were the traditional methods in helping patients in the control group improve their memory skills.

B. The BOMB was not successful in helping the patients in the experimental group improve their memory skills; the improvement was due to weekly attendance at the senior citizens' center.

C. Traditional memory therapy techniques are the most reliable and valid; the clinician should not attempt to use The BOMB again.

D. The attendance of most experimental subjects at weekly Bingo nights at the senior citizens' center was a possible confounding variable, making it impossible to conclude that The BOMB alone caused the difference in the performance of the two groups.