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THE USE OF QUADRATIC DISCRIMINANT ANALYSIS FOR THE MEASUREMENT OF PROFILE DISTANCE IN SOCIAL PERCEPTION
Author(s) -
SUTTON A. J.
Publication year - 1971
Publication title -
british journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.536
H-Index - 92
eISSN - 2044-8295
pISSN - 0007-1269
DOI - 10.1111/j.2044-8295.1971.tb02035.x
Subject(s) - psychology , semantic differential , adjective , similarity (geometry) , linear discriminant analysis , discriminant , point (geometry) , quadratic equation , social psychology , statistics , variety (cybernetics) , perception , index (typography) , discriminant validity , cognitive psychology , psychometrics , developmental psychology , artificial intelligence , mathematics , computer science , geometry , noun , neuroscience , internal consistency , image (mathematics) , world wide web
The 291 students in the 1965 first‐year intake to a variety of degree courses at a London college of technology rated 12 role concepts in each of 35 bipolar, seven‐point adjective scales and provided information on their social and cultural background and on certain educational and occupational attitudes. In many studies similarity between semantic differential profiles in relation to external criteria such as the students' social background has been examined using Osgood's generalized distance index. This index assumes a particular kind of interaction between the profiles and it is the purpose of this paper to demonstrate that several kinds of interaction between profiles can be obtained and that they can effectively be described using quadratic discriminant analysis. The method of analysis is used to analyse hypotheses arising in the present study. These results are reported and a number of problems concerning interpretation of the results are discussed.