caa a22 4500 386354790 CHVBK 20180307111847.0 cr unu---uuuuu 161130e198905 xx s 000 0 eng 10.1017/S0033291700012502 doi S0033291700012502 pii (NATIONALLICENCE)cambridge-10.1017/S0033291700012502 The General Health Questionnaire: a psychometric analysis using latent trait theory [Elektronische Daten] This study examines the Likert-style successive integer scoring of Goldberg's (1972, 1978) General Health Questionnaire (GHQ) with a psychometric model in which the thresholds between successive categories within each item can be estimated. The model is particularly appropriate because the scoring of the successive categories, which are not named in the same way across items, by successive integers has received substantial discussion in the literature. Results from 1967 teachers in Western Australia who completed the 30-item form of the GHQ show that the items conform reasonably well to the model at a general or macro-level of analysis. In particular, the original ordering of categories is supported. However, as expected, there are systematic differences between distances among threshold within items and systematic differences among thresholds between items. The differences between positively and negatively orientated items confirm a suggestion in the literature that these two classes of items form sufficiently different scales so that they could be treated as separate, though reasonably correlated, scales. Copyright © Cambridge University Press 1989 Andrich David School of Education, Murdoch University; Ministry of Education, Western Australia, Australia Schoubroeck Lesley Van School of Education, Murdoch University; Ministry of Education, Western Australia, Australia Psychological Medicine Cambridge University Press 19/2(1989-05), 469-485 0033-2917 19:2<469 1989 19 PSM https://doi.org/10.1017/S0033291700012502 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0033291700012502 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Andrich David School of Education, Murdoch University; Ministry of Education, Western Australia, Australia NATIONALLICENCE 700 1- Schoubroeck Lesley Van School of Education, Murdoch University; Ministry of Education, Western Australia, Australia NATIONALLICENCE 773 0- Psychological Medicine Cambridge University Press 19/2(1989-05), 469-485 0033-2917 19:2<469 1989 19 PSM CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge