A local history confound occurs in an evaluation study when
A) participants in the control group learn about the treatment being given to the experimental group.
B) an event outside the research affects only the control group or only the experimental group.
C) members of the control group feel demoralized because they know they are not receiving a treatment.
D) a program is a poor fit with the clients' culture.

Question

Quizplus · Accepted Answer

A local history confound occurs when an unrelated event outside of the study affects only one group (control or experimental), making it unclear whether the changes observed are due to the treatment or the outside event. Choices A, C, and D refer to other types of confounds.

A Local History Confound Occurs in an Evaluation Study When