Effects of uncertainty,delay, and focus of attention on reactions to an aversive situation

The hypotheses of informational cognitive control, based on the idea that being able to predict the occurrence of an unpleasant event facilitates a reduction of its impact, has not received clear support in previous research. The present experiment investigated the effects of three variables on subjective reactions to mild electric shock: (1) temporal uncertainty about when the shocks would occur, (2) the period of delay before the shock, and (3) attention to either the sensory properties of the shocks or emotional reactions to them. The results showed that low temporal uncertainty and short periods of delay led to reduced anxiety during the period preceding the shock but did not reduce the reported intensity of the shocks themselves. Higher ratings of both shock intensity and distress were obtained when the focus of attention was on the sensory properties of the stimuli rather than on the affective reactions to them. It was concluded that (i) the attentional focus of the subject is an important determinant of rated stimulus effects, and (ii) prediction, though it may reduce prestimulus anxiety, has no real effect on the impact of the stimulus itself.