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


A

Psychology

You might also like to view...

According to the DSM, which of the following questions would be most useful in distinguishing a panic attack from anxiety?

a. Do you experience a lot of nightmares? b. Would you describe your symptoms as distressing? c. Do your symptoms reach peak intensity within 10 minutes? d. Are your symptoms difficult for you to control?

Psychology

Dreams from non-REM tend to be:

A. very life-like B. related to waking life C. sexual in nature D. dull and contain repetitive thoughts

Psychology

The practice of acupuncture in North America began in the 1920's and later the Chinese started using this as a therapeutic treatment as well

Indicate whether the statement is true or false

Psychology

The cilia in the nasal cavity act in a manner similar to taste buds in that they ______________

a) respond to various wavelengths of smell b) contain pressure-sensitive elements that detect certain molecules c) contain receptor sites that are stimulated by different molecules d) only respond to five basic smells

Psychology