ERIC Number: ED069692
Record Type: Non-Journal
Publication Date: 1972-May
Reference Count: N/A
A Study of the Usefulness of Weighting Test Item Responses.
Passmore, David L.
The purpose of this study was to investigate the practicality of multiple discriminant function analysis for deriving item response weights. Item responses on a job satisfaction questionnaire administered to 219 professional workers and 242 semi-skilled customer workers were analyzed. Discriminant functional analysis was conducted on the total sample. Respondents were then randomly assigned to one of two subsamples. Two different discriminant function analyses were then undertaken to maximize group differences in each of the samples. Inconsistency of the results indicates that weights so derived are not generalizable to an independent sample from the same population. Though an increment in predictive efficiency of 11% might be realized with the differential weighting system, the veracity of the increment is doubtful due to the failure of the differential weighting system to cross-validate. Investigating other weighting techniques, such as latent trait measurement models, empirical techniques for weighting each multiple-choice alternative of a test item, and confidence weighting, is suggested. (DJ)
Publication Type: N/A
Education Level: N/A
Sponsor: Office of Education (DHEW), Washington, DC.
Authoring Institution: Minnesota Research Coordinating Unit for Vocational Education, Minneapolis.
Identifiers - Assessments and Surveys: Minnesota Satisfaction Questionnaire