An experimental analysis of social traps

Social traps, such as the overgrazing of pasturelands, overpopulation, and the extinction of species, are situations where individuals in a group respond for their own advantage in a manner damaging to the group. A laboratory analog was devised to simulate conditions that produce social traps. The traps were constructed by superimposing schedules of reinforcement. Single responses were followed by multiple consequences which were opposite in valence, with the negative consequence delayed. Subjects in groups of three could respond individually for points that applied toward class credit. Each ten presses of a button added one point to the subject's total and subtracted one point from a common pool. The pool was replenished with points at fixed rates. If subjects responded for points faster than the replenishment rates, the pool would empty and the experiment would terminate before subjects could accumulate maximum credit. In addition, the maximum pool size and the ability to communicate were varied. Main effects were found for both, which indicated the least effective resource management occurred when the pool was small and no communication allowed. An analysis of cumulative records showed differing response patterns across conditions.     

An experimental social relation between two monkeys

A technique was developed for studying the reinforcement of one organism by another. Two pairs of monkeys served as subjects in adjoining but separate lever-pressing chambers. However, they were in visual, aural, and tactile contact with each other. After both pairs were trained to tolerate delays of reinforcement and one pair was trained under stimulus control to exchange reinforcements, monkey A of each pair pressed a lever to feed monkey B, and monkey B pressed to feed monkey A. The experiment sought to determine if this social interaction could be maintained. With a free responding procedure where the monkeys could work at any time in any order, the social relation proved unstable. After several oscillations in which one monkey did most of the responding and the other monkey did most of the eating, the reinforcement frequency for both pairs of animals decreased to very low levels. The final outcome would have been starvation had the experimenter not intervened.     

Empowering school social work practices for positive youth development: Hong Kong experience

Empowerment has become a popular concept in working with adolescents in recent years. It challenges the deficit model of youth work and focuses on creating a facilitative climate in which young people can make maximum use of the opportunity to learn and grow. While many practitioners have adopted the empowerment approach in youth services, however, we know little about the possibilities for empowerment practice in the field of school social work. Based on the findings of a qualitative study conducted in Hong Kong, this paper explores how school social workers engage in different dimensions of empowerment: (1) the personal dimension in regard to how students recapture a sense of competence to meet life challenges and fight for their own benefits; (2) the school and community dimensions in regard to how practitioners collaborate with service users and partners to initiate constructive changes to school policies and strengthen the school-community partnership for student development; and (3) the institutional dimension in regard to how practitioners play the advocacy role in the education sector. The findings provide rich information for other youth workers, especially those who render service in the school setting, as they apply the empowerment approach in daily practice.     

The transition from school to work: An organisational approach

The thinking which has been done on the development of the self-concept as a factor in careers guidance is now being supplemented by thinking about the contexts within which young people develop these self-concepts. Adults who engage in guidance and counselling need to understand what they do against the background not only of the class origins of their students but also of the organisational settings which are relevant to their work. The different assumptions lying behind the organisations of schools and work-places are of critical importance. If those providing careers guidance do not understand some of these differences, the advice they give may be more confusing than supportive: rather than helping, it may handicap young people who are trying to be creative and responsible for themselves. Drawing on research done by the Grubb Institute, this paper outlines some key points about the organisation of schools and firms which can be taken into account by teachers, employers or careers officers seeking to advise young people in transition. These are: the different kinds of groups found in work and in school, especially in terms of size, stability and behaviour; the related assumptions about authority and leadership found in each; and the effect of these upon each individual's relationship with the organisation to which he belongs. Some suggestions are made about courses of action implied by the findings discussed in the paper, including implications for the role of the careers teacher.     

An experimental space combining individual and social performances

This report describes several primate environments in which two or more animals shared a common social area. Automatic programming was used to permit concurrent individual sessions. Some of the behavioral phenomena observed in these environments, including reinforcing properties of social interactions, are discussed.     

High school student employment in social context: adolescents' perceptions of the role of part-time work

The majority of middle-class high school students now work at part-time jobs during the academic year. During in-depth interviews, 35 seniors at a predominantly middle-class high school were asked to relate their jobs, or their decisions not to work, to the social contexts of employment. Attitudes toward the workplace and interpretations of the work ethic were analyzed within these contexts in order to examine the role of part-time employment in their lives. The findings of this study suggest that a negative stereotype of the high school student-worker is not justified. Instead, part-time work upholds a variety of interpretations of the work ethic within the framework of normative middle-class values. Future studies are needed to relate part-time work among adolescents to social and economic as well as developmental perspectives.     

An evaluation of reciprocal peer tutoring across elementary school settings

The effects of a reciprocal peer tutoring (RPT) intervention on the arithmetic performance of 12 low-income, underachieving elementary school students across three elementary school settings were evaluated and a partial component analysis was conducted. The results indicated that merely teaming students and providing them with positive attention for constructive team activities had no clear effect on arithmetic performance. An RPT condition that involved peer-managed group contingencies yielded consistent increases in rate of accurate arithmetic performance to a level that was significantly above the rates of untreated control students. Attendance and maintenance data also supported the efficacy of the intervention.     

An evaluation of a perceived overqualification scale across work settings

The authors extended and evaluated the dimensionality of the L. J. Khan and P. C. Morrow (1991) subjective underemployment scale. They used data from 3 independent samples to assess the measurement properties of the scale. The results of confirmatory factor analyses supported 2 dimensions and indicated that the measurement model parameters partially generalized across samples. Correlational and additional confirmatory factor analytic results rendered empirical support for most of the postulated relationships of the 2 overqualification dimensions with the somatization, job satisfaction, and organizational commitment variables. The findings indicate that the scale of perceived overqualification needs to be further developed and validated in different samples. The implications of the findings for person-job fit are discussed.     

An empirical evaluation of the SYNWORK1 multiple-task work environment

SYNWORK1 is a multiple-task work environment that allows up to four tasks (memory search, arithmetic, visual monitoring, and auditory monitoring) to be performed concurrently. Experiments were conducted to evaluate performance and subjective workload for each individual task and all combinations of tasks at two presentation rates. At the slower default rates, the three experiment-paced tasks were not very demanding, and improvements with practice were due primarily to the subject-paced arithmetic task. Doubling the presentation rates made the demands of all tasks more comparable and decreased the influence of arithmetic performance. SYNWORK1 is useful for comparisons between populations of individuals and evaluations of arousal-related variables, and, with modification, could provide a tool for assessing basic issues in multiple-task performance.     

The psychological treatment of tinnitus: An experimental evaluation

Disabling tinnitus in 27 patients was treated in an experimental setting with two different types of therapy aiming at the development of coping behaviour. One was focused on behavioural control procedures, while the other aimed at more cognitive control methods such as distraction. The results of the two forms of therapy were compared with each other and with observations of the untreated control subjects. Assessments of subjective loudness, discomfort from tinnitus and controllability were made on analogue scales and at a questionnaire follow-up. Psychoacoustic measures such as personal loudness units (PLU) were used in connection with these self-recordings and for evaluation of treatment effects. The results confirmed favourable reports on behavioural methods in tinnitus. However, no differences were found between therapies. The results are discussed in the light of the coping and adaptation theory.     

An experimental evaluation of three theories of auditory stream segregation

Three theories of auditory stream segregation were evaluated. In two-part trials, subjects heard an induction sequence, whose effects upon an immediately subsequent test sequence were measured. The rhythm and total duration of Induction Sequence tones were varied in two experiments. The similarity between induction and test sequences aided segregation, but rhythmic predictability and longer tone durations did not. Frequency alternation during the induction sequence was not necessary to induce segregation in the test sequence. Furthermore, peripheral processes inadequately account for the segregation effects found. The data suggest that, once a distinct percept emerges from an auditory scene, properties derived from the percept (particularly changes) are fed back to control the ongoing analysis of that auditory scene. A neural adaptation to stimuli with constant properties may form part of this analysis.