We Are Trying to Evaluate the Efficacy of a Treatment

question 51

Multiple Choice

We are trying to evaluate the efficacy of a treatment for claustrophobia. We have a control group that receives no treatment and an experimental group that receives our new treatment. We ask each participant to enter a very small room and stay there are long as they can. The mean of the control group is 10 seconds, with a standard deviation of 4 seconds. The mean of the experimental group is 18 seconds with a standard deviation of 8 seconds. Our best estimate of effect size is

• A) 2.0
• B) 1.33
• C) 1.0
• D) 1.75

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Definitions:

Ohio State University

A public research university located in Columbus, Ohio, known for its significant contributions to various fields of study, including psychology.

Julian Rotter

An American psychologist best known for his development of social learning theory and the concept of locus of control.

Mothers

Female parents who give birth to, adopt, or raise children, playing a key role in their development and socialization.

External Locus of Control

A belief that outcomes in one's life are determined by external forces or chance rather than by one's own efforts.