How evaluation and need for structure affect motivation and creativity

Research has shown that evaluation can have negative effects when it is perceived as controlling rather than informational. We hypothesized that Personal Need for Structure (PNS) would moderate the effects of (perceptions of) evaluative situations. Specifically, we expected that informational evaluative situations would be associated with higher motivation and higher creative performance than controlling evaluative situations, but only when PNS is low. In a field study (N = 53) and an experiment (N = 72), we showed consistently across samples, methods, and outcomes that the positive effects ofinformational evaluation only existed for individuals who were low in PNS. These findings support the reasoning that high PNS individuals tend to welcome any type of feedback because of its disambiguating potential.     

The crystallographic structure of λ transition-alumina compared with the periodic antiphase boundary structure of a Ga2O3-rich Mg gallate

One of the high-temperature metastable phases found in the MgGa₂O₄–Ga₂O₃ system is the ε_Mg non-stoichiometric Mg gallate. It has a one-dimensional periodic antiphase boundary (PAPB) structure based on the spinel structure. The APBs are parallel to the {3?1?0} planes and the APB vectors are of the 1/4?1 1 0? type when referred to the spinel structure. This generally leads to the existence of 12 monoclinic twin variants in the studied samples. By comparing the X-ray or electronic diffraction patterns of both phases, it will be shown that the recently discovered?λ?transition-alumina has the same type of structure.     

Interaction of Tremor and Magnification in a Motor Performance Task With Visual Feedback

In this study, the interaction between increased gain in the visual feedback loop and motor control of the periphery was investigated. Participants (N = 15) were asked to maintain a constant finger position while they used magnified visual feedback. The measure of the accuracy of each trial was the standard deviation (trial error) of the finger position. Trials performed under magnification had lower trial errors than trials without magnification. The change in trial error between trials with and without magnification proved greater than the difference between trials at any 2 magnifications. In contrast, the differences between individual subjects were often greater than the differences between performances at individual magnifications. At higher magnifications, performance seemed to be limited by the tremor; the ratio of trial error to tremor intensity was constant. When applied to microsurgery, the present results accord with those found in earlier research, including investigations that have found that the level of magnification used in microsurgery is not the most significant factor in achieving good results and that tremor is the limiting factor in microsurgical tasks.     

A moderated mediation model of e-mentoring

Based on a longitudinal sample of 1381, this study develops and tests a moderated mediation model of electronic mentoring (e-mentoring). Results show evidence that frequency of interaction between protégés and mentors mediates the relationships between program antecedents (the protégé’s previous internet experience and initial motivation to participate) and program outcomes of general self-efficacy and task-efficacy. In addition, the protégé’s general self-efficacy prior to starting the program was found to moderate the relationships between protégé and mentor interaction frequency and program outcomes of task and general self-efficacy. Unexpectedly, having mentors in the past was not significantly related to program outcomes. Practical implications and future areas of research are identified and discussed.     

虚拟团队理论研究及其发展趋势

本文对近几年来有关虚拟团队产生的背景、基本理论研究思路、研究现状及其未来研究的发展趋势作了初步讨论。文章的主要结论是：对虚拟团队的理论研究正在从静态的、横向的、宏观的层次,向更为动态的、纵向的、微观的层次深入;将更加关注虚拟团队运作机制的研究;将更加关注电子商务背景下的项目虚拟团队;将更多的采用较为系统的现场和实验室研究的方法;将更加注重虚拟团队过程绩效的评估。     

神经症躯体化倾向的绘画诊断研究

通过问卷、绘画测验和回归分析,7项绘画特征被验证能够有效反映神经症躯体化倾向。根据这些绘画特征建立的回归方程经检验具有中等的解释效果。同时,评分者一致性程度较高。研究结果表明,通过“树人绘画测验”,能够建立对神经症躯体化倾向进行有效测量的临床诊断工具。     

Normalized pulse volume and blood volume as separate indices of finger arterial and venous vascular tone: Examination under propofol

Abstract: This study examined the newly proposed indices for estimating finger vascular tone, which can be obtained from near infrared transmittance photoplethysmographic recordings; normalized pulse volume (NPV) and blood volume (BV). They were recorded for seven male and two female students under continuous infusion of and recovery from propofol. Concomitant hemodynamic measurements were made with a non-invasive impedance cardiograph and a continuous blood pressure monitor. Normalized pulse volume showed no apparent dose-dependency and was negatively correlated with total peripheral resistance. In contrast, BV increased dose-dependently with propofol concentration and was negatively correlated with cardiac preload index (PLI) and with stroke volume (SV) at higher concentrations. The supplementary structural equation modeling procedure effectively illustrated causal relationships between BV, PLI and SV. In conclusion, the present data suggest that NPV and BV independently reflect arterial and venous tone in the finger tip, respectively. Although the underlying mechanisms remain unclear, BV is more sensitive to vascular dilation under propofol anesthesia.     

儿童绘图作业内隐学习智力独立性研究

实验采用中性参数程序和绘图作业,让正常智力、轻度智力落后、中度智力落后3组8～12岁右利手儿童接受符合、不符合或与“起始-旋转法则”无关的绘图练习,考察练习对原初行为方式的影响。结果发现,违反“起始-旋转法则”的练习使智力落后组被试的绘图行为发生了明显改变,证明内隐学习具有智力独立性;“意识污染”对内隐学习结果的影响可能是复杂的而非单向的;中性参数实验程序能够更好地隐蔽规则学习的实验目的,但不能有效消除意识污染的影响。     

2.5至7.5岁儿童关于图画作者能力特点的认知发展

借助2岁儿童图画作品,考察25至75岁儿童对于图画作者能力特点的认知发展状况。结果表明：2．5岁到55岁的儿童,在本实验情境的图画判断过程中尚不能考虑小年龄图画作者的能力特点,65岁以后儿童的这种能力得到了,发展。研究对儿童理解图画作者能力的心智基础进行了分析。     

Body image disturbance and relationship satisfaction among college students

Two hundred and eighty-two college undergraduate and graduate students, including 81 males and 201 females, responded to an on-line survey measuring relationship satisfaction, body image distortion and body dissatisfaction, self esteem, and thoughts about weight loss. A modified Kansas Marital Satisfaction Scale (KMSS) queried respondents about their relationship satisfaction as well as their perception of their partner’s satisfaction with the relationship. Respondents checked one of 17 figural drawings indicating their perceived and ideal size as well as judgments of perceived and ideal size of their partner. Females had greater body image size distortion and body dissatisfaction, lower self esteem, and more frequent thoughts about weight loss. Males were more dissatisfied with their partner’s size. Respondent’s body size distortion predicted perceived partner relationship satisfaction, with greater size distortion predicting less perceived partner relationship satisfaction. Greater perceived partner relationship satisfaction predicted increased respondents’ relationship satisfaction. Perceived partner’s dissatisfaction with respondent’s body size only approached significance as a predictor of respondent’s relationship satisfaction. However, the strength of this variable as a predictor warrants further examination of its potential role in relationship satisfaction.