In a Study of the Effectiveness of a Treatment for Depression,a

question 28

Multiple Choice

In a study of the effectiveness of a treatment for depression,a psychologist assesses patients' symptoms of depression using a reliable questionnaire both before and for several months after treatment.During the same time period,the psychologist also assesses the symptoms of individuals who are randomly assigned to a waiting-list control group.The results indicate that individuals in both groups experienced a decrease in their symptoms over the 8-month time period of the study.One threat to internal validity the researcher should consider is

• A)regression.
• B)maturation.
• C)selection.
• D)all of these

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Definitions:

Oral Communication

The ability to give and exchange information, ideas, and processes verbally, either one on one or as a group.

Exchange Information

The act of sharing or trading data, knowledge, or ideas between parties, which can facilitate decision-making, learning, or problem-solving.

Verbal

Pertaining to words and the use of language, typically involving spoken communication.

Collaborative Environment

A workplace or setting that fosters cooperation, sharing of ideas and joint effort among team members to achieve common objectives.