Question

Two plausible threats to internal validity: Selection Bias and History effects A counselor wants to see if providing free services affects the degree to which his clients improve. He contacts a university and volunteers to see university students as clients one morning per week without charge. He compares the improvement of the university students with similar clients he sees in his private practice.

Name: two plausible threats to internal validity selection bias and history effects a counselor wants to see if providing free services affects the degree to which his clients improve he contacts 73173
Uploaded: 2021-12-07T20:40:18-08:00
Duration: 2 min
Channel: Jorge Villanueva
Description: two plausible threats to internal validity selection bias and history effects a counselor wants to see if providing free services affects the degree to which his clients improve he contacts 73173

          Two plausible threats to internal validity: Selection Bias and History effects
A counselor wants to see if providing free services affects the degree to which his clients improve. He contacts a university and volunteers to see university students as clients one morning per week without charge. He compares the improvement of the university students with similar clients he sees in his private practice.

Added by Emily J.

Psychology Openstax

Rosie M. Spielman 1st Edition

Instant Answer

Solved by Expert Jorge Villanueva

12/07/2021

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This could lead to biased results as the two groups may not be truly comparable. Show more…

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Two plausible threats to internal validity: Selection Bias and History effects A counselor wants to see if providing free services affects the degree to which his clients improve. He contacts a university and volunteers to see university students as clients one morning per week without charge. He compares the improvement of the university students with similar clients he sees in his private practice.