ERIC Number: ED048370
Record Type: Non-Journal
Publication Date: 1971-Feb
Reference Count: N/A
Closing the Communications Gap with Item Sampling.
Petersen, Dwain F.; Anderson, Douglas H.
The equivalency of item sampling and student sampling of attitudes of college students was investigated. A factor analysis of student-sampled data collected during Spring 1968, was compared with a factor analysis of item-sampled data collected each quarter from Fall 1968, through Winter 1970, at Mankato State College, using the Campus Environment Study (CES) developed by the Central States Colleges and Universities Cooperative Research Program. In an earlier study item sampling was demonstrated to be equivalent to student sampling in terms of correlations of item means and standard deviations. It was also found that standard deviations of item-sampled responses were systematically smaller than for student sampling. When the results of that earlier study and the present one were compared, factor structures of student attitudes were found to be similar if not equivalent. Factors from item sampling had several common items on similar factors gained from student sampling. Item-sampled factors contained many items from the same a priori environments of the original item pool. The congruence of the items in the item-sampled factors was judged to be high, with some notable exceptions which could be attributed to the less than perfect intercorrelation matrix. An example of a typical item sample, consisting of six questions taken from the full 150-item CES is attached. (Author/TA)
Publication Type: N/A
Education Level: N/A
Authoring Institution: Mankato State Univ., Minn.