A model of the functional psychoses

Nunn, Chris

doi:10.1111/j.1600-0447.1980.tb00595.x

Cited by 2 publications

(2 citation statements)

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“…Of the many research methods available to study depression, the information-processing approach has the advantage of being experimental, non-invasive, objective, quantitative and reliable (see Teuting (1981) for a review of current research on depression). At least two theories postulate that depression primarily involves a sensory information processing deficit (Johnson, 1975;Nunn, 1980). Consistent with this view are the results of two studies in which some depressed patients are reported to be less sensitive to visual flicker than other patients and normal controls (Black et al 1975;Perris, 1966).…”

Section: Introductionmentioning

confidence: 92%

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Visual flicker in depression: response criteria, confidence ratings and response times

1986

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SynopsisDifferences in response criterion and sensory sensitivity to visual flicker among major depressive patients, dysthymic patients, and normal controls were investigated. Also, signal detection confidence ratings and response times were compared. The results indicated that major depressive patients responded more conservatively (i.e. were less willing to respond ‘flicker’) than either of the other groups. The groups did not differ significantly on a criterion free measure of flicker sensitivity. The major conclusions are: (1) previously reported visual flicker differences between depressed patients and normal controls were probably due to the more conservative response criterion of the patients and not to flicker sensitivity differences between groups; and (2) confidence ratings and response times yield similar conclusions with respect to visual flicker sensitivity and response criterion. Therefore, interpretations concerning a sensory or perceptual deficit in depression must take into account the differences in response criterion between depressed patients and normal controls.

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Section: Introductionmentioning

confidence: 92%

“…It is not clear whether depressed patients exhibit the type of sensory processing deficits described by Johnson (1975) and Nunn (1980), or whether they are simply more reluctant to respond 'flicker' (i.e. are more conservative).…”

Section: Introductionmentioning

confidence: 99%