Recognizing faces in and out of context

Two experiments are reported which examined the influence of context on face recognition accuracy for novel and familiar faces respectively. Context was manipulated by varying the physical background against which the faces appeared. In Experiment I, 80 student subjects observed 18 faces before attempting to recognize them in a sequence of 36 alternatives. For half the subjects, the backgrounds changed from study to test, while for the remainder they stayed the same. In addition, for half the subjects, both the pose and expression of the face also changed, while for the others it remained constant. Changes in pose plus expression and context significantly reduced recognition accuracy for the target faces. Experiment II used an identical design, except that the faces of celebrities replaced the novel faces. The influence of context was eliminated but the effects of pose and expression were maintained. However, when only faces which were actually identified by subjects were considered, the effects of pose and expression, too, were eliminated. The significance of these findings for theories of contextual memory are discussed.     

Computer games for the teaching of reading

The development and implementation of programs of computer-based instruction for reading are discussed.     

The simultaneous and independent measurement of penile circumference and length

It has been recently shown that in the early stages of erection, the human penis undergoes a substantial length change that is not detected using circumferential measurement devices. The present report introduces a relatively simple device that can assess changes in both length and circumference. The device promises to provide a low-cost alternative to the precision and sensitivity associated with plethysmography.     

Duration discrimination in a series of rhythmic events

Duration discrimination of the last of a series of four clicks was investigated. Examination of psychophysical functions from eight subjects revealed evidence for a Weber’s law model relating discrimination to base interclick interval. Also, the point of subjective equality was seen to change reliably as a function of base rate.     

Reactance,Attribution, Equity,and the Help Recipient1

The relevance of social psychological theory for understanding the helping relationship from the recipient's perspective and for designing efficient and humane helping systems is examined. Negative feelings associated with seeking or receiving help may occur when recipients feel threatened with loss of freedom (reactance), interpret their help-seeking as a sign of inadequacy (attribution), or feel uncomfortably indebted (equity). Studies supporting each of these theories, and a program of research which contrasts helper vs. recipient-initiated assistance, are reviewed. Findings suggest that helper-initiated aid leads to higher utilization of services and better recipient feelings. These results are interpreted as supporting attribution in contrast to reactance theory concepts. A field study in a welfare setting extends laboratory findings, and shows that current practice which requires welfare recipients to initiate requests for service may effect savings via lowered requests for service at the expense of recipients who really need help but are inhibited from requesting it.