Are Tests Comprising Both Multiple-Choice and Free-Response Items Necessarily Less Unidimensional Than Multiple-Choice Tests? An Analysis of Two Tests

Author(s):

Thissen, David; Wainer, Howard; Wang, Xiang-Bo

Publication Year:

1994

Source:

Journal of Educational Measurement, v31 n2 p113-123, Sum 1994

Document Type:

Article

Page Count:

11

Subject/Key Words:

Scoring, Multiple Choice Items, Unidimensionality, Free Response Items, Factor Analysis, Advanced Placement Program (AP), Item Types