A quantitative measure for expressed emotion

Author(s): Dingemans, P. M. A. J., Linszen, D. H.

Journal/Book: Psychiatry Res. 1997; 69: Customer Relations Manager, Bay 15, Shannon Industrial, Estate Co, Clare, Ireland. Elsevier Sci Ireland Ltd. 53-65.

Abstract: The items of the Five Minute Speech Sample, an instrument to elicit relatives' expressed emotion, were investigated in a follow-up study of 120 parents of adolescents with recent-onset schizophrenia. A composite scale was constructed using Mokken scale analysis. From the 9 available items, 6 formed a unidimensional and cumulative scale. This scale was applicable for the total parent group, as well as for fathers and mothers separately. A second scale of 2 items did not meet the criteria for the Mokken model completely and was applicable for the parent group as a whole, but not for fathers and mothers as separate groups. The configuration of the subscales as found with the Mokken scale analysis was comparable with the results of principal component analysis. A quantitative measure may detect smaller differences in expressed emotion than the dichotomous index and expands the possibilities for statistical tests.

Note: Article Lenior ME, Univ Amsterdam, Acad Med Ctr, Dept Psychiat, Tafelbergweg 25, NL-1105 BC Amsterdam, NETHERLANDS

Keyword(s): composite scale; five minute speech sample; Mokken scale analysis; principal component analysis; simultaneous principal component analysis; SCHIZOPHRENIC-PATIENTS; PSYCHIATRIC-PATIENTS; CONTROLLED TRIAL; FAMILIES; RELAPSE; PREDICTORS; VALIDITY; SCALE; INTERVENTION; ATTITUDES

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