Electronic Theses and Dissertations

Identifier

468

Date

2011

Document Type

Thesis

Degree Name

Master of Science

Major

Psychology

Committee Chair

Randy Floyd

Committee Member

William Dwyer

Committee Member

Thomas Fagan

Abstract

This study examined the relations between and the exchangeability of IQs from four brief and abbreviated intelligence tests. All four tests were administered to 40 college students and scored by one set of examiners and later scored by a second examiner. All IQs were submitted to a Generalizability theory analysis to examine the relative contributions of error variance components of “test” and “examiner” and their interactions in producing variance in IQs relative to the object of measurement, individual differences in general intelligence. Despite very strong mean reliability coefficients (i.e., .91 to .96), the resulting dependability coefficient was .75, which indicated suspect dependability. The inadequate dependability coefficient from this study indicates that IQs are not as exchangeable as one might have assumed based on internal consistency reliability estimates, inter-rater reliability estimates, and convergent validity evidence.

Comments

Data is provided by the student.

Library Comment

Dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.

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