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Q methodology: the inverted factor technique

Watts, Simon and Stenner, Paul (2007). Q methodology: the inverted factor technique. Irish Journal of Psychology, 28(1-2) pp. 63–75.

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This paper aims to re-establish the legitimacy of the inverted factor technique in psychology, to provide details of appropriate data collection and analytic processes, and to highlight some possible applications of the method. The inverted (or by-person) factor technique had traditionally been applied to the same matrix of data that supported more conventional (by-item) factor analyses. But this is statistically problematic. In fact, the same data matrix can properly be inverted or transposed (and thus factor analyzed by both row and column) only when a single measuring unit is consequence, the inverted technique all but disappeared from psychology. This paper will nonetheless demonstrate, by detailed reference to William Stephenson’s ‘Q methodology’, that inverted or by-person factor analyses are both viable and statistically legitimate as long as a different (and specialist) matrix of data is collected and analysed. It is hoped that psychologists will now be encouraged to explore the potential of the inverted technique.

Item Type: Journal Item
Copyright Holders: 2007 The Psychological Society of Ireland
ISSN: 0303-3910
Academic Unit/School: Faculty of Arts and Social Sciences (FASS) > Psychology and Counselling > Psychology
Faculty of Arts and Social Sciences (FASS) > Psychology and Counselling
Faculty of Arts and Social Sciences (FASS)
Item ID: 30647
Depositing User: Paul Stenner
Date Deposited: 15 Dec 2011 15:19
Last Modified: 06 Aug 2019 08:38
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