Affective reactivity in language: the role of psychophysiological arousal.

Several studies have found that individuals with schizophrenia and their relatives, as well as healthy controls, exhibit greater language disturbance when discussing affectively negative as compared to positive or neutral topics. The goal of this study was to test the hypothesis that negative emotion impairs language production, at least in part by increasing physiological arousal. The authors had 35 healthy adults produce speech in response to affectively negative, positive, and neutral questions while the authors recorded heart rate and skin conductance. Participants displayed greater amounts of reference errors, higher heart rates, and a higher frequency of nonspecific skin conductance responses when discussing affectively negative as compared to positive or neutral topics.