Dr. Ann L. Retentive wants to establish construct validity for an instrument to measure perfectionism. Which of the following is true about convergent evidence for validity?
A) There should be relatively low correlations between the instrument and other, theoretically related measures
B) The researcher should develop some hypotheses about what the instrument should predict based on a theoretical framework
C) The researcher needs to find a standardized, external criterion for comparison
D) a and c

Question

Quizplus · Accepted Answer

Convergent evidence for validity refers to demonstrating that the instrument correlates as expected with other measures that should theoretically be related to the construct being measured. Therefore, it is necessary for the researcher to first develop hypotheses about what the instrument should predict based on a theoretical framework. Option A is incorrect because there should be relatively high correlations between the instrument and other theoretically related measures, not low. Option C is partially correct but lacks specificity; the researcher needs to find a standardized, external criterion for comparison but also needs to demonstrate that the instrument correlates with other measures that assess the same construct. Option D is incorrect because option A is incorrect.

Dr Ann L Retentive Wants to Establish Construct Validity for an Instrument