Behavioral engineering: the reduction of smoking behavior by a conditioning apparatus and procedure

Recent findings from animal conditioning studies have revealed methods of reducing responses to a very low level with a minimum of aversive by-products. These findings were incorporated into the design of a cigarette case that automatically locked itself for a period of time after a cigarette was removed from it. The next cigarette could be taken at the end of the interval, which was signalled by distinctive stimuli. Five heavy smokers were allowed to become accustomed to using the case. Then, the duration for which the case was locked was gradually increased over a period of weeks to about 1 hr. Smoking gradually decreased to the target level of about one-half of a package of cigarettes per day. Control procedures showed that specific features of the apparatus were responsible for the reduction of smoking. The results indicated that this apparatus was sufficiently effective, convenient, and acceptable to smokers to constitute a practical procedure for reducing smoking to the level considered medically safe. The procedure may also have potential for reducing other habit-forming or addictive behaviors.     

Conditioned suppression as a sensitive baseline for social facilitation

The key pecking of pigeons maintained on a variable-interval schedule of food reinforcement was suppressed during occasional presentations of a warning stimulus paired with electric shock. On alternate sessions, a co-actor pigeon was visible in an adjoining chamber where it emitted the same food-reinforced key peck during the warning stimulus that signalled shock for the subject. With no shock and at low shock intensities, where the subject's responding was not suppressed or suppressed only slightly, the co-actor had little effect. At the higher shock intensities, where the subject's responding was reduced by at least 40%, the response rate during the warning stimulus was consistently higher when the co-actor was present. One explanation of these results assumes a special relationship between social stimuli and aversive stimuli in which the presence of another animal reduces emotional reactions and thereby allows operant responses to increase. This was not the case here because the mere presence of the co-actor did not maintain social facilitation. Rather, the present results, taken in conjunction with previous findings, suggest that changes in social and non-social variables which affect the rate of food-reinforced responding may produce proportionately larger changes in responding when that responding is suppressed by aversive stimulation than when it is not.     

The effect of reinforcement magnitude upon responding under fixed-ratio schedules

Responding under fixed-ratio schedules was studied as a function of two durations of food presentation. Latency of the first response after food presentation (post-reinforcement pause) was consistently shorter when food was presented for the longer duration. Only one of the four pigeons studied showed a consistently higher response rate, exclusive of post-reinforcement pause, as a function of the longer access to food. When ratio size was reduced, pause durations decreased, and the differences related to the two durations of food presentations became progressively smaller.     

The prefrontal-thalamic axis and classical conditioning

Using the New Zealand albino rabbit as an animal model, it has been determined that the medial prefrontal cortex is intimately involved in, and may be necessary for, acquisition of classically conditioned bradycardia. The interconnected nuclei of the medial thalamus, most notably the mediodorsal nucleus, conversely appear to be associated with the development of the tachycardia that accompanies classical conditioning of the eyeblink and nictitating membrane response. Neuroanatomical, electrophysiological, brain stimulation, and lesion data are reviewed, which support the conclusion that the prefrontal-thalamic axis is intimately involved in acquisition of classically conditioned visceral changes.     

The Society for Research in Child and Adolescent Psychopathology

The Society for Research in Child and Adolescent Psychopathology     

Commentary on "Sedation before ventilator withdrawal

In any important article in the field of clinical ethics, the focus should not be on the specific case example, but rather on the issues it presents for thought and discussion. Barbara Springer Edwards and Winston M. Ueno achieve this end admirably. They present a terminally ill patient who requested termination of ventilator support, despite the overwhelming odds that he would die as a result. The authors ask whether or not the physician acted appropriately in accommodating the patient's wish and in sedating him to decrease suffering in his last moments. They present compelling arguments that sedation was warranted in this case. They also note correctly that competent patients have the right to refuse treatment. However, in addition to the question of sedation, this case raises other important issues, specifically those related to pain management and depression in the terminally ill....     

If “good managers” are masculine,what are “bad managers”?

Little research has been conducted on ineffective behavior or bad characteristics of managers as contrasted with effective behavior or good characteristics. This study examines the perceived characteristics of bad managers as well as good managers. In contrast to a stereotypical view of the good manager as masculine, bad managers were seen by business students as low in both masculinity and femininity, or in nonstereotypical terms. Results were not affected by the relative social desirability of masculine and feminine characteristics.This study was supported by a grant from the University of Connecticut Research Foundation. An earlier version of the article was presented at the 11th Annual Meeting of the American Institute for Decision Sciences, New Orleans, November 1979.