Analyzing the random control procedure: Effects of paired and unpaired CSs and USs on autoshaping the chick's key peck with heat reinforcement

A series of five experiments using a total of 264 subjects investigated the effects of paired and unpaired key light (CS) and heat (US) stimuli on autoshaping the chick's key peck. Experiment 1 established that paired presentations of CS and US promoted a more rapid rise in key pecking than did randomly presented CSs and USs and that the specific sequence of stimuli under the random control procedure affected key pecking performance. Experiment 2 used a trace conditioning procedure to determine the role of the CS-US interval on autoshaping and to define empirically unpaired CSs and USs. Key pecking declined as the trace delay interval was increased from 0 to 25 sec; at 25 sec, no conditioning of key pecking occurred. Experiments 3–5 assessed the effects on autoshaped key pecking of (a) number of daily CS-US pairings, (b) added unpaired CS presentations, and (c) added unpaired US presentations, since paired and random control schedules differed in all of these respects. Reduction in the number of CS-US pairings slowed the acquisition of key pecking as did the concurrent addition of nonreinforced CSs and unsignaled USs. These results support theories of association formation that stress the effects of both paired and unpaired CSs and USs.     

Effects of orienting task,spacing of repetitions,and list context on judgments of frequency

Subjects were given an unexpected frequency judgment test following a list of words in which items were presented either two, three, and five times or three, five, and seven times, with a spacing of 0, 2, 16, or 32 items between repetitions. During list presentation, they either rated the imagery value of each word or made continuous frequency estimates. Postlist frequency judgments of words presented three and five times were higher for the list containing words of Frequency 7, and judgments were also higher following the imagery rating task. Continuous judgments were unaffected by the list context and showed different effects of spacing than postlist judgments. The results provide support for the operation of response bias factors in the frequency judgment task and are relevant to theoretical interpretations of the spacing effect.     

The effects of humor-induced arousal upon aggressive behavior

The present experiment attempted to reconcile previous results in the area of humor and aggression. It was hypothesized that humor serves two functions, arousal and attentional shift, with regard to its influence on the relation of prior anger arousal and aggression. As a test of this assumption, subjects in the present experiment were subjected to three forms of humor (high arousing, low arousing, nonhumor) after being angered or treated in a neutral manner by a confederate. In an analysis on subsequent aggression toward the confederate, it was found that female subjects reduced their aggression after exposure to low arousing humor while maintaining aggression at a high level for high arousing stimuli. Male subjects were not influenced by humor exposure. Possible reasons for this sex difference are examined in light of the arousal and attentional shift properties of humorous stimuli.     

The new sexual assault law: The victim's experience in court

The questions asked of victims of sexual and physical assault by the prosecutor and defense were recorded and coded by courtroom observers. The defense in comparison to the prosecution treated both types of victims in a negative way. Sexual assault victims were subjected to more negative questions and required to give a more personal form of testimony than physical assault victims due to the strategies used by both the prosecution and the defense. Sexual assault cases were convicted less often than physical assault cases. It was concluded that the new law in Canada which replaced the offense of rape with one of "sexual assault" has not had its intended effect of reducing the burden on a victim when she testifies in court.     

Responses to patterns of employee absences

Simulated supervisory responses to different patterns of absence were examined in a 2×2×2 factorial experiment. Annual employee absence records were varied in terms of frequency of absence, when in the year absences occurred (timing) and the mean time between absences. The responses of 73 raters to these records were evaluated in terms of perceived intentions of the employee, perceived impact on the company and raters' intentions to act. The results cast doubts on the role of attributions of intentionality as a mediator between absences and supervisory action. A three-way interaction on supervisor action suggests a three stage model in which frequency has the dominant effect, followed by timing and mean time between absences.