David's scale measuring social media addiction has a Cronbach's alpha of 0.86. Edison's scale that also measures social media addiction has a Cronbach's alpha of 0.17. Which of the following is true when comparing the Cronbach's alpha of both scales?
A) David's scale has poorer internal consistency than Edison's scale.
B) David's scale has poorer test-retest reliability than Edison's scale.
C) David's scale has better internal consistency than Edison's scale.
D) David's scale has better test-retest reliability than Edison's scale.

Question

Quizplus · Accepted Answer

Cronbach's alpha is a measure of internal consistency reliability, which describes how well the items within a scale are measuring the same construct. A higher Cronbach's alpha indicates better internal consistency. Therefore, David's scale has better internal consistency than Edison's scale (0.86 > 0.17). Test-retest reliability, on the other hand, refers to the stability of scores over time, and is not directly related to Cronbach's alpha.

David's Scale Measuring Social Media Addiction Has a Cronbach's Alpha