Effects of models and demonstrations of personal narratives on the use of lexical ties by writers with mental retardation

A single subject reversal design was used to investigate the effects of two methods for teaching writing to eight adolescents with mild or moderate mental retardation during a weekly process writing workshop. During each workshop, each student wrote a personal narrative while the teacher circulated among the group and provided positive verbal feedback and spelled words on request. Students' texts were later typed with corrected spelling and punctuation and returned to them with verbal praise before the next writing workshop. During the first experimental condition, the subjects listened to an exemplar text selected by the teacher. In the second phase, the teacher read a narrative she had written as the exemplar text. During the third experimental condition, the teacher orally self-instructed herself through steps in writing a narrative. The subjects' texts were analyzed for number of words written and number and type of lexical ties used to produce cohesion between sentences in a text. The model narrative produced the best gains in the number of words written by the poorer readers, while the demonstration improved the cohesiveness of their texts. The better readers and writers wrote more cohesively during the model narrative and produced longer text during the demonstration condition.     

The Argument from Design: What Is at Stake Theologically?

This article offers a brief overview of the argument for God's existence grounded in the evidence of design. It gives particular attention to the way the argument has evolved over time and in relation to changing scientific perspectives. The argument from de-sign has in fact been formulated and reformulated in response to the discoveries and challenges it has encountered from the field of science. The conclusion of the article explores the theological importance of this argument—its extent and its limits.     

计划缺失设计——通过有意缺失让研究更高效

缺失值是社会科学研究中非常普遍的现象。全息极大似然估计和多重插补是目前处理缺失值最有效的方法。计划缺失设计利用特殊的实验设计有意产生缺失值, 再用现代的缺失值处理方法来完成统计分析, 获得无偏的统计结果。计划缺失设计可用于横断面调查减少(或增加)问卷长度和纵向调查减少测量次数, 也可用于提高测量有效性。常用的计划缺失设计有三式设计和两种方法测量。     

青少年友谊关系质量与社交焦虑的相互影响:一项交叉滞后分析

采用问卷法和追踪设计,通过交叉滞后回归分析,考察初中三年期间698名青少年的友谊关系质量与社交焦虑的相互影响及其动态变化。结果发现,初二到初三期间,青少年友谊关系质量的喜爱-满意维度显著负向预测社交焦虑;初中三年期间,青少年社交焦虑显著负向预测友谊关系质量的喜爱-满意维度;但友谊关系质量的冲突维度与社交焦虑的相互预测作用不显著。这些结果表明,青少年友谊关系的喜爱-满意维度与其社交焦虑之间存在相互影响,而且该相互作用存在一定程度的动态变化。     

Stress and Student Job Design: Satisfaction, Well-Being, and Performance in University Students

It is imperative that the university environment be supportive and capable of nurturing optimal learning and performance in students. Using job design and work stress theories, the study assessed relationships between psychosocial work characteristics, well-being and satisfaction, and performance in a random sample survey of Australian university students (N = 176). Methodological improvements were a time lag between survey and performance measures, an objective measure of performance, and LISREL structural equation modeling. Results showed high levels of psychological distress and low levels of satisfaction, both linked to high demands combined with low control. In accord with the happy-productive student hypothesis, satisfaction mediated the impact of the work environment on performance. Reengineering the design of the student work environment may therefore improve performance outcomes (student grades) through enhancing satisfaction.     

Psychometrics in Support of a Valid Assessment of Linguistic Minorities: Implications for the Test and Sampling Designs

In this study, we propose that the unique needs and characteristics of linguistic minorities should be considered throughout the test development process. Unlike most measurement invariance investigations in the assessment of linguistic minorities, which typically are conducted after test administration, we propose strategies that focus on the early stages of test development. Our approaches involve considering linguistic minorities in the selection of the test and sampling designs. We posit that joint consideration of these issues preemptively can strengthen the claims derived from tests used to assess linguistically diverse populations. This also will contribute to more psychometrically robust assessments, which can yield accurate and valid score-based inferences for linguistic minorities. To this end, we provide various examples and methodological approaches that can be used in the selection of the test and sampling designs that take these issues into consideration.     

Team innovation and team effectiveness: The importance of minority dissent and reflexivity

Past research suggests that minority dissent in teams may foster team innovations. It is hypothesized, however, that minority dissent would predict team innovations only when teams have high levels of reflexivity - the tendency to overtly reflect upon the group's objectives, strategies, and processes and adapt them to current or anticipated circumstances. This hypothesis was tested in a field study involving a heterogeneous sample of 32 organizational teams performing complex, ill-defined tasks. Results showed more innovation and greater team effectiveness under high rather than low levels of minority dissent, but only when there was a high level of team reflexivity. Avenues for future research are discussed.     

消费行为研究中的联合分析法

联合分析(Conjoint Analysis)是一种定量的研究消费者选择偏好的方法。虽然从它诞生到现在只有40年的历史,但它对消费者行为学的影响很大,它的发展更是日新月异。文章首先介绍了联合分析的基本概念,然后重点阐述了联合分析的原理、步骤和发展历程,最后对联合分析的发展方向作了一个简要概括。