Health-promoting physical activity of adults with mental retardation

This literature review describes the physical activity behavior of adults with mental retardation consistent with the U.S. Surgeon General's recommendation of 30 minutes of moderate intensity physical activity on 5 or more days per week. The proportion of participants achieving this criterion ranges from 17.5 to 33%. These data are likely to be generous estimates of activity as individuals included in physical activity studies to date have been relatively young and healthy volunteers with mild to moderate limitations. Major sources of physical activity were walking and cycling for transport, chores and work, dancing, and Special Olympics. There is a pressing need to conduct studies using appropriately powered representative samples and to validate measures that assess physical activity less directly; including methodologies in which proxy respondents are used. Accurate information about existing patterns of behavior will enhance the development of effective strategies to promote physical activity among persons with mental retardation.     

Intimacy, concreteness, and the "self-reference effect"

Reference to oneself during incidental learning of words frequently results in better recall performance than reference to other persons. However, this effect occurs under different conditions with differing strength, and sometimes it is even reversed. Meta-analyses and further experimental studies suggest that increased recall performance under a self-referential encoding task occurs only if it is compared with a nonintimate other person and if abstract material is presented, irrespective of the type of previously presented words (adjectives or nouns). In the current paper, two experiments are reported which support the assumption that this intimacy effect on memory only occurs if no pictorial or concrete features of the material (nouns) to be learned can be exploited for an improvement in encoding or remembering the material. All results agree with predicted effect sizes, which were drawn from a meta-analysis and subsequently conducted experimental studies. This suggests that a recall advantage of referring to oneself compared to other persons is subordinate to the effects of concreteness or imageability. Moreover, the current results offer a theoretical explanation of some previously reported but nevertheless puzzling results from imagery instructions, which indicate decreased recall performance for self-reference compared to other-reference.     

Priming of mental operations by masked stimuli

Motor responses can be affected by visual stimuli that have been made invisible by masking. Can masked visual stimuli also affect nonmotor operations that are necessary to perform the task? Here, I report priming effects of masked stimuli on operations that were cued by masking stimuli. Cues informed participants about operations that had to be executed with a forthcoming target stimulus. In five experiments, cues indicated (1) the required response, (2) part of the motor response, (3) the stimulus modality of the target stimulus, or (4) the task to be performed on a multidimensional stimulus. Motor and nonmotor priming effects followed comparable time courses, which differed from those of prime recognition. Experiment 5 demonstrated nonmotor priming without prime awareness. Results suggest that motor and nonmotor operations are similarly affected by masked stimuli.     

Neue Medien,neue Forschungsinitiativen

Summary. Two new research programs which are funded by the German Science Foundation are aimed at establishing cognitive media psychology in Germany. The main question of the thematic research program "Net-based Knowledge Communication in Groups" concerns the new forms of communication using net-based technologies and their effective use for the exchange and acquisition of knowledge. Similar questions are posed by the virtual Ph.D. program "Knowledge Acquisition and Exchange with New Media". In contrast to other Ph.D. programs in German this one is not located at a specific place, but distributed over several research institutions all over the country. This setting enables students to collaborate with other tutors and students at the different locations. Zusammenfassung. Mit zwei neuen Förderprogrammen der DFG soll versucht werden, eine kognitionspsychologisch orientierte Medienforschung in Deutschland zu verankern. Im Mittelpunkt des Schwerpunktprogramms "Netzbasierte Wissenskommunikation in Gruppen" steht die Frage, wie sich neue Kommunikationsformen, die durch netzbasierte (computergestützte) Technologien möglich werden, für den Austausch und den Erwerb von Wissen in Gruppen effektiv nutzen lassen. Mit einer ähnlichen Fragestellung befasst sich auch das virtuelle Graduiertenkolleg "Wissenserwerb und Wissensaustausch mit neuen Medien". Im Gegensatz zu anderen Graduiertenkollegs ist es nicht ortsgebunden sondern verteilt über mehrere Forschungsinstitutionen. Es ermöglicht somit eine ortsübergreifende Betreuung und Zusammenarbeit der Kollegiatinnen bzw. Kollegiaten.     

Scientific associations in the German research system—Results of an empirical study

Within contemporary science, scientific associations have been found to fulfill at least four functions: a communicative function that furthers scientific communication within a discipline or subdiscipline; a profesional function that supports individual careers and represents the collective interests of the members within a discipline; a transfer function that provides a meeting place for scientists and societal users of research results; and a promotion function that advises research institutes and political institutions in science policy decisions. This empirical study investigates German scientific associations and shows how and to what degree they fulfill these functions. The results of the study indicate that the communicative and the transfer functions dominate. Uwe Schimank is currently a research fellow at the Max-Planck-Institut fur Gesellschaftsforschung in Cologne. He received his doctorate in sociology at the University of Bielefeld. He is presently working on an analysis of the development of extra-university state-financed research institutes in the German research system.     

Development of the Correspondence Between Real and Imagined Fine and Gross Motor Actions

The development of the correspondence between real and imagined motor actions was investigated in 2 experiments. Experiment 1 evaluated whether children imagine body position judgments of fine motor actions in the same way as they perform them. Thirty-two 8-year-old children completed a task in which an object was presented in different orientations, and children were asked to indicate the position of their hand as they grasped and imagined grasping the object. Children’s hand position was almost identical for the imagined- and real-grasping trials. Experiment 2 replicated this result with 8-year-olds as well as 6-year-olds and also assessed the development of the correspondence of the chronometry of real and imagined gross motor actions. Sixteen 6-year-old children and seventeen 8-year-old children participated in the fine motor grasping task from Experiment 1 and a gross motor task that measured the time it took for children to walk and imagine walking different distances. Six-year-olds showed more of a difference between real and imagined walking than did 8-year-olds. However, there were strong correlations between real and imagined grasping and walking for both 6- and 8-year-old children, suggesting that by at least 6 years of age, motor imagery and real action may involve common internal representations and that motor imagery is important for motor control and planning.     

The Effects of Leader Fairness and Pay Outcomes on Superior/Subordinate Relations1

This study assessed the effects of procedurally fair leadership and payment outcomes on subordinate reactions to the supervisor in a pay-for-performance task. Procedurally fair leadership was operationalized by the extent to which supervisors enacted three specific behaviors: facilitation of voice, accuracy, and adherence to formal policies and procedures. The payment outcomes were high and low cash payments for performance evaluated as above or below average. Subordinate reactions to these treatments focused on perceptions of supervisory fairness (both procedural and distributive) and the subordinate's relationship with his or her supervisor (in terms of both satisfaction and commitment). Procedurally fair leadership showed a main effect on subordinate perceptions of leader fairness and on their relationship with the leader. No other effects were noted. Implications are discussed.