With regard to evaluation designs,which of the following statements is not accurate?
A) variation in the levels of treatment delivered by a program can be a major threat to the validity of even randomized evaluation studies
B) uncontrolled variation in treatment is equivalent to unreliable measurement of the independent variable
C) controlled variation in treatment represents a threat to generalizability
D) varying degrees of participation by clients in a program will impact the outcome

Question

Quizplus · Accepted Answer

Controlled variation in treatment actually enhances the generalizability of results as it allows for analysis of the effectiveness of different levels or types of treatment. Uncontrolled variation in treatment (i.e. inconsistent delivery of program elements) is the equivalent of unreliable measurement of the independent variable, and varying degrees of participation by clients can impact outcomes.

With Regard to Evaluation Designs,which of the Following Statements Is