A Comparative Study of Electronic Performance Support Systems     

Frank Nguyen  James D. Klein  Howard Sullivan 《Performance Improvement Quarterly》2005,18(4):71-86

ABSTRACT Electronic performance support systems (EPSS) deliver relevant support information to users while they are performing tasks. The present study examined the effect of different types of EPSS on user performance, attitudes, system use and time on task. Employees at a manufacturing company were asked to complete a procedural software task and received support from either an intrinsic, extrinsic, external performance support system or no system at all. Results revealed significant differences on performance, attitudes and use between several treatment groups. The study suggests that providing any kind of EPSS to support task performance is better than having none at all. In addition, designers can improve user performance, attitudes and use by creating systems that integrate with the primary work interface.  相似文献   

Spatial assimilation effects and error detection in rapid overlapping and sequential bimanual movements.     

D E Sherwood  A Sullivan 《Research quarterly for exercise and sport》1999,70(3):252-264

This study verified earlier anecdotal evidence indicating that spatial assimilations could be reduced by offsetting movements in time. In Experiment 1, 40 right-handed participants (ages 18-23 years) made single and dual quick lever reversals of 20 degrees and 60 degrees with the left and right limbs, respectively. Participants were assigned to either the Overlapping (O) group, in which one limb began when the other limb reached the reversal point, or to the Sequential (S) group in which one limb followed the other with a delay of 114 ms, on average. The shorter-distance limb of the O group overshot relative to the S group. Short-distance spatial assimilations were also shown in the S group in Experiment 2, when the delay was increased to 250, 500, or 1,500 ms (N = 30), suggesting that assimilation effects can be caused by command interactions at both the planning and the execution levels.  相似文献   

A Decade of 21st-Century Dinosaur Research at IVPP     

Corwin Sullivan 《中国科学院院刊(英文版)》2010,24(2):89-91

<正>In the first decade of the 21st century, a larger number of important new dinosaur specimens have come from China than from any other country. The Institute  相似文献   

Formative Evaluation of Computer‐Based Training For a University Financial System     

Kathryn M. Fischer  Wilhelmina C. Savenye  Howard J. Sullivan 《Performance Improvement Quarterly》2002,15(1):11-24

This article describes a formative evaluation of a one‐day introductory computer‐based training (CBT) course for a new on‐line financial and purchasing system at a large public university. The purposes of the evaluation were to evaluate the effectiveness of the training and to identify appropriate revisions and incorporate them into the training program. Participants were 78 university employees who were likely future users of the financial and purchasing system. The mean score on an on‐line performance posttest that simulated real‐work tasks was 94%, and the mean on a 40‐item knowledge posttest covering the CBT content was 74%. Learner attitudes toward the course were positive, averaging 4.4 on a 5‐point scale. Formative evaluation of the program resulted in revisions that had the potential to improve its effectiveness and provided evidence of the value of ongoing formative evaluation of workplace training.  相似文献