Professor Swanson developed an index of marital happiness.Several items in Swanson's questionnaire were not a part of the index (i.e. ,"How many serious quarrels or arguments have you had with your spouse in the past year?")Swanson compared the index scores of marital happiness with these questions.Swanson was doing:
A)index validation.
B)item analysis.
C)external validation.
D)index validation and item analysis.
E)index validation and external validation.

Question

Quizplus · Accepted Answer

Swanson was performing index validation by ensuring the index accurately measures marital happiness and external validation by comparing the index scores with related, but not included, questions to see if they align with expectations.

Professor Swanson Developed an Index of Marital Happiness