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 construction.
B)item analysis.
C)external validation.
D)analysis invalidation.
E)Likert scaling.

Question

Quizplus · Accepted Answer

Swanson was conducting external validation by comparing the index scores of marital happiness with questions not included in the index to assess the index's validity in measuring what it is supposed to measure.

Professor Swanson Developed an Index of Marital Happiness