Art instruction and the Goodenough-Harris drawing test in fifth-graders

The experiment was conducted to assess the effect of ordinary school art instruction in human figure drawing on scores of the Goodenough-Harris Drawing Test. Subjects consisted of 44 fifth-grade students attending a suburban parochial school who were members of two preexisting, randomly assigned homeroom classes. Both classes were taught two lessons in art by their regular teachers. The treatment group was taught human figure drawing, and the control group had art lessons excluding figure drawing instruction. The Drawing Test was administered three times, one preinstruction and two postinstruction administrations. Absenteeism reduced treatment and control groups to 14 and 17 subjects, respectively. As predicted, no differences were found in the control group between pretest and postests. The treatment group showed significant gains on both posttests, as well as a significant decline from the first posttest to the second posttest.     

实践理性和道德的合理性--当代西方哲学道德合理性理论评析

怎样证明道德行为的合理性一直是西方伦理学研究的主题之一。本从实践理性和实践理性的根据即价值着手，根据与行动相关的价值和中立于行动的价值之同的区别，内在主义和外在主义之同的区别，将西方关于实践理性的理论即论证道德合理性的理论分为四类：与行动相关的外在主义理论，与行动相关的内在主义理论，中立于行动的内在主义理论，以及中立于行动的外在主义理论。并对这些理论的内容及其优劣一一进行了述评。     

Terrorism and Africa: A Study of Agenda Building in the United States

An agenda-building model was examined for the question of Africaand terrorism. A path analysis compared real-world events (deathsand attacks attributed to terrorism), presidential emphasis,media coverage, and foreign aid for 20 African nations. Resultsshow a clear agenda-building trend—when nations were emphasizedwith a terrorism frame. Presidential emphasis of nations’involvement in terrorism influenced media coverage and the policyagenda. The findings also suggest that deaths attributed toterrorism influenced the news and policy agendas. Media coverageof nations with a terrorism frame influenced the policy agenda.Only one significant path coefficient was found in the analysisof agenda setting without terrorism framing: The more PresidentBush mentioned a nation in his public statements, the more TheNew York Times covered the country. Received for publication September 29, 2006. Accepted for publication March 27, 2007.     

Caution regarding exergames: a skill acquisition perspective

Background: The advent of technology use in physical education is upon us. But the implications of using exergames as a substitute for traditional physical education instruction for some students raise questions. Although exergames have the potential to increase energy expenditure and motivation in some children, it is less clear whether they can provide skill acquisition benefits that are similar to those found in traditional physical education.

Purpose: In a previous experiment from our laboratory, we found that deliberate practice can significantly reduce the planning time required for lateral arm movements. The purpose of this study was to determine if exergames can produce a similar effect, by reducing the processing time required for children to initiate arm movements to the contralateral and ipsilateral space.

Participants and setting: Thirty children (boys?=?15, girls?=?15), between the ages of 7 and 12 years, participated in a pre- and post-test each taking 30?min and one 30?min treatment session in a university laboratory.

Research design: A repeated measures design was employed to test the effects of deliberate laterality practice on processing speed. Children were randomly assigned (n?=?10) to either a Nintendo Wii tennis contralateral movement experimental group, Nintendo Wii bowling ipsilateral movement experimental group, or handheld video-game control group. Each child participated in one 30?min treatment session.

Data collection: Upper extremity choice reaction time (RT) was measured through 27 goal-directed aiming movements for each arm separately, during the pre-test and post-test. The stimulus–response trials occurred in three randomly presented directions (ipsilateral, contralateral, and midline).

Data analysis: A 3 (treatment group)?×?2 (age group)?×?2 (test)?×?3 (direction) mixed design analysis of variance with repeated measures on the last two factors was used to test for significant differences, with an alpha level set at 0.05.

Findings: There were no significant treatment effects on RT across all groups indicating that a short bout of exergame training was unsuccessful in improving lateral movement processing.

Conclusions: Deliberate laterality practice using exergames did not improve the motor processing speed of lateral arm movements in the same manner of traditional physical education as indicated by our previous research. Explanations as to why exergames do not exhibit the same positive transfer for skill acquisition as traditional physical education instruction are discussed within this paper.     

International conferences: Significant measures of success

This article reviews the literature on evaluating international conferences identifying significant factors which contribute to measured success. Extensive previous research over the last twenty years has identified criteria for evaluating success which continue to be ignored as international conferences repeat the same mistakes. More systematic research is needed. A framework of 25 evaluation measures is described for future research on the assessment of international conferences.Responses to three items of a questionnaire sent out by the East-West Culture Learning Institute as part of a project studying international conferences are also discussed, relating to evaluation measures, problems of evaluation and potential benefits of evaluation. Guidelines and suggestions are provided synthesizing the available research toward planning more successful international conferences in the future. In conclusion, six issues are identified for further clarification in future research on international conferences.