The effect of grip-tension on tactile-kinaesthetic judgement of width

The effect of various grip-tensions on the accuracy of kinaesthetic width judgements was tested. Forty first-year psychology students were used as subjects. Significant differences in accuracy between pressures were found in the descending adjustments with greatest accuracy at 1.0 kg. Some significant differences were found between pressures in ascending adjustments. All subjects overestimated on the descending and underestimated on the ascending trials at all pressure levels. Increased grip-tension was found to reduce the accuracy of width judgement in terms of constant error while affecting varlance only slightly.     

Social Psychology and the Stimulation of Recycling Behaviors: The Block Leader Approach

Recycling has been touted as an important part of the solution to solid waste problems, yet most citizens still do not recycle, even when recycling is made easy by curbside pickups. This field experiment was designed to increase participation in a city-sponsored curbside recycling program. Citizens who consistently recycled with the city program were approached and asked to be "recycling block leaders." Those who agreed were instructed to give approximately 10 nonrecycling neighbors a persuasive communication advocating recycling and special recycling bags. A second treatment group (of nonrecycling households) had bags and the communication left at their door. Results indicated that the curbside recycling of the two experimental groups differed significantly from one another (with the block leader group recycling more), and both differed significantly from a control group receiving no treatment. A discussion of past recycling intervention research and its feasibility for community application is included.     

A Systematic Review and Quality Assessment of Therapeutic Group Process Questionnaires

ABSTRACT

The aims of this study were to systematically review the literature on questionnaire-based group process measures and assess the psychometric scale development properties of these measures. A systematic search of questionnaire-based measures of group process was conducted from four databases: PsycINFO, Medline, EMBASE and AMED. A quality assessment was undertaken using established criteria. Only studies that described the development of questionnaire-based scales were included. Seventeen studies which described thirteen measures were included in the analysis. The developed list highlights a range of questionnaires that can be used by clinicians and researchers seeking to measure either “specific therapeutic group mechanisms” or “overall group experiences.” Further research should focus on developing the content validity of these scales by involving the target population during item selection and reduction.