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ERIC Number: ED246075
Record Type: RIE
Publication Date: 1984-Apr
Reference Count: 0
Assessing the Dimensionality of Survey Data.
Koch, William R.
A questionnaire was constructed for the purpose of investigating various aspects of the career choices made by graduate students. The research was to determine the underlying structure of the questionnaire and to compare the capability of nonmetric multidimensional scaling (MDS) and linear factor analysis (FA) to reveal dimensions measured by the instrument. The FA and MDS methodologies succeeded in meeting the research objectives. Both methods identified the same items for possible deletion and yielded results which could be interpreted as providing evidence to support the construct validity of the instrument. The factor analysis determined five relatively pure factors, while the MDS permitted graphic depiction of the solution in a two dimensional figure. The FA and MDS methods proved effective in analyzing the career choice data but different ideas about underlying structure of the instrument would be obtained depending on the method used. (DWH)
Publication Type: Speeches/Meeting Papers; Reports - Research; Tests/Questionnaires
Education Level: N/A
Authoring Institution: N/A
Note: Paper presented at the Annual Meeting of the National Council on Measurement in Education (New Orleans, LA, April 24-26, 1984).