Enhancement of Sander illusion in minimal form

This paper reports the effects of systematically reducing the number of component lines in the Sander parallelograms upon judgments of the relative lengths of the diagonal lines. The illusion was maximal when the parallelogram was reduced to its minimal form, viz., three parallel lines remained with all other lines, including the diagonals, omitted.     

An examination of project aware: The effects on children's attitudes toward themselves,others, and school

The purpose of this study was to determine the impact of Project AWARE on children's attitudes about themselves, peers, teachers, principals, and school. Data were collected on children's sex, race, stanine score on achievement tests, and pretest performance in order to determine the differential effects of the treatment. Eighty students were included in the study, 40 in the experimental group and 40 in the control group. All were from fourth and fifth grade classrooms. The major findings were that children involved in the program achieved greater personal adjustment and accepted responsibility for negative outcomes in social situations (internal control). White children scored higher in personal and social adjustment. Black children evidenced more positive attitudes toward school. Girls scored significantly higher than boys on the social adjustment subtests and attitudes toward peers. Black children in the control group had less positive attitudes toward teachers than white children in the experimental group     

The treatment of nocturnal bruxism using contingent EMG feedback with an arousal task

Nocturnal electromyographic (EMG) recordings of masseter muscle activity were performed before and after treatment on 10 heavy bruxism subjects. Treatment consisted of giving the subjects an auditory feedback signal during sleep which occurred when they clenched with moderate force. Each subject additionally had to perform an arousal task every time the signal occurred. Nine of 10 subjects demonstrated a significantly decreased EMG activity using a contingent auditory feedback signal, combining it with an arousal task.     

The development of letter processing efficiency

The development of efficiency in letter processing skills was studied using a letter search task. In two experiments, subjects searched for a target letter displayed with items varying in their visual featural or conceptual categorical similarity to the target. Accuracy and reaction time of search were evaluated for evidence of the visual search “category effect.” In order to determine if subjects could efficiently use knowledge of stimulus differences to facilitate search, conditions tested search time as a function of the amount of information to be processed both within the visual display and in short-term memory. In the two experiments, subjects of ages 6 years through adulthood showed the category effect; however, efficiency of letter processing was found to be related to the amount of information that had to be processed in memory. While there were drastic changes in search speed with increasing grade level, patterns of processing were consistent, leading to the conclusion that the knowledge required to process the letter information accurately is acquired very early. Results were discussed in terms of the distinctions among accuracy, automaticity, and efficiency of skill development and the relationship of these to general reading and intellectual development.     

The double standard of aging and the social situation: Judgments of attractiveness of the middle-aged woman

Two hundred male and 200 female undergraduates judged pictures of middle-aged women and middle-aged men for their immediate emotional appeal. Pictures had been selected to be of middle attractiveness and to represent individuals who appeared to be between 35 and 55 years old. Subjects made judgments under one of the following social conditions: in private, or in small groups which were all male, all female, or half male and half female. Social condition and subjects' sex affected judgments significantly, and there were some significant complex interactions between these two variables and the sex of the stimulus picture. Male and female subjects privately judged middle-aged women to be more attractive than middle-aged men, but the effect was reversed when judgments were made publicly in groups. As predicted, members of all-male groups judged middle-aged women to be considerably less attractive than middle-aged men. Members of all-female groups, and both the men and the women in mixed-sex groups, judged middle-aged women to be only slightly less attractive than middle-aged men.The authors wish to thank Linda Andrews, Dayna Buskirk, Anne Grealy and Lori Monda for their assistance.     

Helplessness deficits in students: The role of motivational orientation

This paper includes research comprised of field studies and laboratory experiments to examine our diathesis-stress model that students with an extrinsic motivational orientation given evaluative/controlling directives are at risk for maladaptive achievement patterns, including performance, cognitive, and emotional deficits of helplessness. The findings, using our multimethod approach, confirmed our assumptions and indicated that motivational orientation is a more reliable predictor of helplessness than either attributions or perceptions of competence. The pattern of data obtained across studies is discussed in light of other theoretical approaches to understanding achievement patterns in students.The research reported here was supported, in part, by Grant No. MN45566 from NIMH. Address all correspondence to Ann K. Boggiano, Department of Psychology, Campus Box 345, University of Colorado, Boulder, Colorado 80309-0345.     

A descriptive analysis of client outcomes associated with staff interventions in developmental disabilities

Although a large body of research supports the use of behavioral staff management interventions in developmental disabilities, the nature of client outcomes associated with such interventions has not been systematically assessed. We reviewed 59 staff management studies published over 20 years (1971–1990) in order to determine the generality or scope of the research (i. e., range of settings, types and levels of clients' disabilities, clients' ages), the frequency of inclusion of client outcome measures, the types of measures and levels of analysis selected (i. e., individual groups, combination), and the effects of the interventions on client behavior. Results indicated that: (a) over two-third of the studies were conducted in institutional settings; (b) more than one-half involved clients with profound to severe mental retardation; (c) clients of various ages were served; (d) assessment of client outcomes increased progressively over the period; (e) engagement and skill acquisition were the most frequently used measures; (f) group data were presented twice as frequently as either individual or a combination of group and individual data; and (g) staff interventions were associated with either positive or mixed client outcomes in 80% or more of the cases, although maladaptive behavior went unchanged in one-fifth of the studies in which they were reported. Based on these findings, suggestions are made for how researchers might extend the generality of staff management research, improve client outcome assessment practices, and produce even more consistently positive results.