Nm. Docherty et al., AFFECTIVE REACTIVITY OF SPEECH IN SCHIZOPHRENIA-PATIENTS AND THEIR NONSCHIZOPHRENIC RELATIVES, Journal of abnormal psychology, 107(3), 1998, pp. 461-467
This study compared levels of referential communication disturbance in
speech samples from 41 stable schizophrenia outpatients, 46 parents o
f patients, and 23 nonpsychiatric control participants in affectively
positive versus affectively negative conditions. The speech of the pat
ients and parents showed elevated frequencies of reference failures in
the affectively positive condition compared with control participants
; the speech of the patients became more disordered in the affectively
negative condition, whereas the speech of the parents did not. These
results support the idea that referential communication disturbances r
eflect vulnerability, as well as overt illness, but that affective rea
ctivity of these disturbances is associated mainly with the manifest i
llness. These findings are consistent with biological, cognitive, and
psychological theories about the processes underlying stress responsiv
eness of schizophrenic symptoms more generally.