Cronbach's alpha is a way to assess the _____ of an index. For an index to be considered "acceptable" for research purposes in the social sciences, alpha values should be _____.
A) reliability … below 0.25
B) reliability … 0.70 or higher
C) validity … below 0.25
D) validity … 0.70 or higher
(Note: * indicates

Question

Quizplus · Accepted Answer

Cronbach's alpha is a measure of reliability, specifically internal consistency reliability, of an index or scale. An alpha value of 0.70 or higher is generally considered acceptable for research purposes in the social sciences, although some argue for higher thresholds depending on the context and purpose of the index/scale. Alpha values below 0.25 indicate poor reliability. Validity, on the other hand, refers to whether the index/scale actually measures what it claims to measure, and cannot be assessed solely through Cronbach's alpha.

Cronbach's Alpha Is a Way to Assess the _____ of an Index