When a change in the wording of questions,a change in interviewers,or a change in other procedures causes a change in the dependent variable,a(n)____ effect has occurred.
A)instrumentation
B)redundancy
C)cohort
D)attrition

Question

Quizplus · Accepted Answer

An instrumentation effect occurs when changes in the measurement instrument or procedure affect the dependent variable. In this case, changes in wording or interviewers could alter how the participants respond and result in a change in the dependent variable. Redundancy refers to unnecessary repetition, cohort refers to a group of people studied over time, and attrition refers to loss of participants. None of these concepts fit the scenario described in the question.

When a Change in the Wording of Questions,a Change in Interviewers,or