On the standard error of the modified biserial correlation

A paradoxical implication of Kraemer's expression for the large-sample standard error of Brogden's form of the biserial correlation is identified, and a new expression is given which does not imply the paradox. However, numerical evidence is presented which calls into question the correctness of the expression.     

Job Satisfaction and Nonwork Satisfaction as Components of Life Satisfaction1

The relationship between job satisfaction and life satisfaction is examined, using regression analyses which control the effects of satisfaction with domains other than the job and conditions associated with the workplace and with life away from work. Results from data analyses of two independent sets of survey data are used to elaborate and refine a multivariate framework for relating overall life satisfaction and job satisfaction.     

THE EXPERIMENTAL MODIFICATION OF SONOROUS BREATHING

Loud snoring is a noxious habit and potential personal health risk. We are reporting the first experimental study of simple behavioral techniques for the modification of chronic snoring. Twenty-four volunteers participated in a repeated measures, randomized group design over 2 weeks of intervention and one-month follow-up. Treatment groups included a contingent-awakening and breathing retraining (self-control) condition. Both treatment groups were compared to a no-treatment control. Despite considerable intrasubject variability and the lack of an adequate attention-placebo control group, objective assessment indicated a substantial reduction in snoring amplitude and frequency in both treatment groups. Follow-up assessments further demonstrated maintenance of change. This study has implications for modification of sleep habit disorders and learning without awareness.     

Morality andin vitro fertilization

The question of the morality ofin vitro fertilization is examined. One of the central questions to be answered is whether the zygote loss that seems inseparable from the process is morally justified. Even when embryo transfer occurs, many zygotes which have been intentionally created are intentionally destroyed; they are used as means to the alleged benefits that others will attain (the benefit to the infertile couple, to the child produced by the process, and to those who might benefit from the increase of genetic knowledge that allegedly will occur fromin vitro research). The justifications advanced in defense of early abortion are discussed, and it is shown that these justifications must be totally distinct from those advanced in support ofin vitro fertilization. A theory of values is proposed which shows why a set of reasons may justify early abortion, but not an abortion late in the pregnancy. This theory states that the value characteristics of an entity are notidentical to the characteristics which make the entityhuman. It is concluded that if certain key empirical assumptions are correct, then in vitro fertilization is a morally permissible process; however, the falsity of these assumptions, or the unsoundness of the theory of value, might well result in a reversal of this judgment.     

Exposure to inescapable shock produces both activity and associative deficits in the rat

Interference with shuttle-box escape learning following exposure to inescapable shock is often difficult to obtain in rats. The first experiment investigated the role of shock intensity during escape training in the apparent fragility of the effect. Experiment 1A demonstrated that the magnitude of the interference effect was systematically related to shock intensity during shuttle-box testing. At .6 mA, a robust effect was obtained, whereas at .8 mA and 1.0, little or no deficit in the escape performance of inescapably shocked rats was observed. Experiment 1B demonstrated that the deficit observed in Experiment 1A depended upon whether or not rats could control shock offset. Experiment 2 suggested that preshock may suppress activity and that higher shock levels may overcome this deficit. Experiment 3 tested this as the sole cause of the escape deficit by requiring an escape response which exceeded the level of activity readily elicited by a 1.0-mA shock in both restrained and preshocked rats. In such a task, preshocked rats performed more poorly than did restrained controls. These results are consistent with the possibility that inescapable shock may, in addition to reducing activity, produce an associative deficit. Experiment 4 more clearly demonstrated that inescapable shock produces deficits in performance which cannot be expleined by activity deficits and which appear to be associative in nature. It was shown that inescapable shock interfered with the acquisition of signaled punishment suppression but not CER suppression. The theoretical implications of these data for explanations of the manner in which prior exposure to inescapable shock interferes with escape learning were discussed.