151


 Additionally, during the shock task of Experiment 2

 subjects reported significantly more negative affect during

 the shock compared to control trials, along with greater

 unpleasantness, arousal, and loss of control. As in

 Experiment 1, these rating support the predictions regarding

 this task. There were no differences in the positive affect

 ratings. These findings reflects subjects ability to

 accurately perceive the emotional context during the

 anticipatory period.

 Reward Condition

 Heart rate

 Heart rate was predicted to produce a triphasic curve,

 including an initial deceleration, followed by an

 acceleration, and then a second deceleration during the

 reward compared to the no-reward trials. No significant

 differences, however, were found when the heart rate

 variables were examined during the reward condition.

 As mentioned above, heart rate varies as a function of

 the response-set given to the subjects. This finding has

 been clearly demonstrated in anticipation of high interest

 slides (nude female) in a sample of undergraduate males.

 Simons, Ohman and Lang's (1979) subjects were divided into

 two groups. Each group was presented with two tones. One

 tone signaled the presentation of high interest slides,

 whereas the other tone signaled presentation of low interest

slides. One group was instructed to press a switch, as