Illusions of size change in dynamic displays

A line of constant width viewed against an expanding or contracting grating appears to become narrower or wider, respectively. This effect was studied using a computer-controlled video system with a motorized zoom lens. The magnitude of the illusory size (width) change with a vertical line did not differ when viewed against a horizontal or an oblique background, and the size change was not due to static size contrast between the line and the background. The illusory narrowing observed with an expanding background was equivalent to the widening observed with a contracting background. The apparent change in the width of lines that actually expanded was consistently underestimated, either on a similarly changing background or when viewed against a gray field. Although the transformation of the background and line produced changes in their perceived distance, this did not occur for a constant line against a transforming background, even though this condition induced the perceived size change.     

Postnatal development of heart rate patterns elicited by an aversive CS and US in cats

Heart rate and motor responses were recorded in cats of different ages during classical conditioning. A deceleratory-acceleratory heart rate pattern observed during the CS-US interval in one and four-week-old kittens is an alpha conditioned response, a potentiated original response to the CS. At eight weeks of age two new distinct patterns of pure acceleration or pure deceleration are acquired during conditioning and in the absence of motor learning. At 12 weeks of age and in adult subjects, heart rate patterns during the CS-US interval become more complex and conditioned motor responses can be observed. A covariance of HR acceleration and motor responses during the CS-US interval is absent in eight-week-old subjects, but quite high in 12-week-old subjects and adult cats. The data are interpreted as suggesting separate elicitatory mechanisms of HR and motor responses which may show synchrony later in ontogeny.     

The narcissistic personality in group psychotherapy

The author presents an interesting version of the Narcissus myth which she combines with the legend of Peter Pan for a better understanding of the narcissistic personality in group therapy. A lively case is presented of a young man named Jeffrey, whose narcissistic defenses were dismantled during a three-year group participation. A particular encounter between Jeffrey and another client and a powerful intervention by the therapist is described. The therapeutic importance of the group therapist as a firm but protective parent for these clients is emphasized. Definitions of narcissistic are given and some generalizations about these personalities in group therapy are explored.She has completed a book entitledChange in the Context of Group Therapy to be published by Brunner/Mazel in 1984.     

On the development of national attitudes in children

The present study consists of three related experiments which are concerned with the development of national attitudes in children between the ages of seven and twelve. It was predicted on the basis of a structural interpretation of Allport's three-stage developmental theory of prejudice that national attitudes will increase at first due to increasing consistency of judgment and decrease afterwards due to cognitive differentiation. The hypothesis is partially confirmed with respect to the attitudes of children towards other countries but not confirmed with respect to the attitudes of children towards people who are perceived as foreigners. A tentative explanation is offered for the last finding. It was shown moreover that the attitudes of older children display more cognitive balance than those of younger children. In connection with the last problem, a quantified modification Bf Heider's theory of balanced states was introduced.     

The effects of depression and cognitive vulnerability to depression on judgments of similarity between self and other

The present research was conducted to investigate the effects of mild levels of depression, and cognitive vulnerability to depression, on people's perceptions of their similarity to others. Depression level was assessed using the Beck Depression Inventory, and cognitive vulnerability was measured with the Dysfunctional Attitude Scale. Subjects rated their similarity to others on a 7-point scale and also generated a list of attributes thought to typify the average other person. In terms of similarity judgments, individuals perceived themselves to be less similar to others as depression level increased. Furthermore, and also as predicted, only individuals scoring high on the vulnerability measure exhibited this pattern. Given the consistently positive view of others expressed by all subjects, this latter finding suggests that vulnerable individuals saw themselves as increasingly distinctive with respect to their own negative attributes, as depression level increased. This social comparison interpretation is consistent with previous research indicating that vulnerable individuals change from a focus on self-referent positive traits when nondepressed to a focus on negative traits when depressed. This pattern is also identified as a possible contributor to the social isolation and interpersonal difficulties characteristic of depression.