Time delay in estimation of angles.

The hypotheses were that a 2-min. delay as opposed to a 2-sec. delay between observation and mechanical estimation to an acute angle will increase the likelihood of overestimation of that angle and that minimal-surround cue-conditions would produce greater overestimation than maximal cue-conditions. 40 subjects estimated a 54 degrees acute angle presented behind a 2-way mirror in one of the four treatment combinations in a 2 X 2 factorial design. A 2-min. time delay caused significantly larger estimates of the angle. Overestimation in the maximal cue-condition was significant but the underestimate in the minimal cue-conditions was not. Cue-conditions were not significantly different from one another.     

Feedback and fidelity: Effects of contingent consequences on accuracy of imitation

Accuracy of imitation by sixty kindergarten subjects was examined using a task in which a female adult modeled a series of pegboard patterns and delivered accuracy-contingent feedback. Four methods of feedback and a nofeedback control were compared. All four feedback groups were more accurate than the control group. The feedback conditions were: positive only, negative only, positive and negative, and negative with correction. The last condition resulted in greater accuracy than the others, which did not differ. All groups, including the control, improved significantly over trials. Accuracy of performance on interspersed, nonfeedback trials was maintained by feedback to the other patterns. Finally, imitation of repeating stimulus patterns did not differ from performance with nonrepeating patterns.     

Effect of reference number on magnitude estimation

The psychophysical function obtained by the method of magnitude estimation was influenced by the reference number (modulus) assigned to a “standard” line and the position of this standard in the range of comparison stimuli. Data from two experiments with judgments of apparent length of lines show how both variables systematically affect the slope of the power function. AllowingO to choose his own reference numbers, even though these numbers varied among as, tended to produce less variability in slope than ifE imposed fixed reference numbers forO to use.     

Children by choice or by chance: The perceived effects of parity

In a study examining inferences made about couples based on their choice whether or not to have children, college undergraduates projected 1-year and 25-year life situations for a hypothetical couple who either (1) neither had nor wished to have children, (2) were presented without any reference to children, or (3) already had two children. This manipulation notwithstanding, most couples were projected as becoming parents. Female subjects saw having children as enhancing the quality of life of both partners, while males took the opposite view.     

Hypnosis as a counselling tool

The history of hypnosis is outlined, with particular reference to recent developments. The main current theories are expounded briefly, and applications in short-term therapy and counselling are discussed As therapists from a wide range of systems of psychotherapy and analysis are increasingly incorporating hypnosis into their practice, the hope is expressed that counsellors will take more advantage of training opportunities and extend the use of hypnosis in their own work.     

Nutritional misinformation of children: A developmental and experimental analysis of the effects of televised food commercials

This study assessed the accuracy of judgments of 100 school age children as to the presence of real fruit content in 3 sets of cereals and beverages advertised on TV: real fruit, nonfruit, and artificially fruit flavored products. In the baseline session, accuracy was an increasing function of age, but children at each age were deceived about real fruit content of artificial fruit products. In session 2, the experimental group saw TV ads for 6 products embedded in a program (naturalistic viewing). They then judged fruit content for these six advertised products, plus a matched set of six for which ads were not shown. Controls saw toy ads on TV, and then judged the same 12 products. In session 3, subjects in each group saw the same ads they had seen in Session 2, without the program and with instruction to attend very carefully to messages in the ad (intensive viewing). They then judged all 12 products again. After naturalistic viewing, few significant differential changes from baseline were found. But after intensive viewing, accuracy of judgment of advertised artificial fruit products was lower than baseline among experimental group children. By contrast, accuracy was higher than baseline both for control children's judgements of “advertised” prod-     

Motivational Factors Affecting Fluctuations of Female Sexual Activity at Menstruation

The hypothesis was tested that pre-menstrual and post-menstrua I increases in sexual activity are due to anticipation of deprivation and rebound following deprivation (Ford & Beach, 1951). Thirty-five married women completed daily questionnaires about their sexual activity for at least two menstrual cycles. Evidence supported the hypothesis that the post-menstrual peak in intercourse is a rebound phenomenon. There was less evidence to support the hypothesis that a pre-menstrual rise represents anticipation of deprivation. In addition, there was a tendency to increase autosexual activity during periods of sexual abstention, which may represent a compensation phenomenon.