When and why hierarchy steepness is related to team performance

This study develops and tests a contingency theory on the functions of status hierarchy steepness in teams. Findings from a field study among 438 employees working in 72 work teams across diverse business settings demonstrate that task complexity moderates the relationships between status hierarchy steepness, different types of team conflict, and team performance. Steeper status hierarchies were negatively related to both process and task conflict, and hence increased team performance in teams working on tasks with lower complexity but did not yield such clear conflict and performance effects in teams working on more complex tasks. By showing that various levels of task complexity determine whether status hierarchy steepness has a conflict-regulating function that drives team performance, this research generates valuable insights about the context dependency of team responses to status hierarchy steepness.     

Through the looking-glass: on the other side of ‘un’conclusive reflections

This qualitative study explored the practices of a Technology Instructional Specialist (TIS) from the reflective vantage point of the specialist herself and multiple data sets collected from classroom teachers she mentored. The study examined the actions and impact of the TIS in assisting individual teachers with technology implementation through a reflective, circular process (i.e. action, reflection, modification, additional action). Data sources were comprised of: (1) survey on teachers’ comfort levels for technology integration in an elementary classroom; (2) teacher interviews; (3) self and teacher reflective assessments of the TIS’s mentoring; and (4) reflective journal notes of the TIS’s experiences. Findings suggest that reflections on and development of differentiated technology mentoring processes and actions conducted within participating teachers’ classrooms impacted their awareness of technology uses and pedagogical application. Most notably, reflections indicate that relational aspects of the TIS and teachers’ interactions impacted the process of technology implementation in participating teachers’ instructional practices. Practical suggestions for practitioners are provided.     

The Suffocation of Marriage: Climbing Mount Maslow Without Enough Oxygen

This article distills insights from historical, sociological, and psychological perspectives on marriage to develop the suffocation model of marriage in America. According to this model, contemporary Americans are asking their marriage to help them fulfill different sets of goals than in the past. Whereas they ask their marriage to help them fulfill their physiological and safety needs much less than in the past, they ask it to help them fulfill their esteem and self-actualization needs much more than in the past. Asking the marriage to help them fulfill the latter, higher level needs typically requires sufficient investment of time and psychological resources to ensure that the two spouses develop a deep bond and profound insight into each other's essential qualities. Although some spouses are investing sufficient resources—and reaping the marital and psychological benefits of doing so—most are not. Indeed, they are, on average, investing less than in the past. As a result, mean levels of marital quality and personal well-being are declining over time. According to the suffocation model, spouses who are struggling with an imbalance between what they are asking from their marriage and what they are investing in it have several promising options for corrective action: intervening to optimize their available resources, increasing their investment of resources in the marriage, and asking less of the marriage in terms of facilitating the fulfillment of spouses’ higher needs. Discussion explores the implications of the suffocation model for understanding dating and courtship, sociodemographic variation, and marriage beyond American's borders.     

Divergence Behaviour of the Successive Geometric Mean Method of Pairwise Comparison Matrix Generation for a Multiple Stage,Multiple Objective Optimization Problem

This paper focuses on the divergence behaviour of the successive geometric mean (SGM) method used to generate pairwise comparison matrices while solving a multiple stage, multiple objective (MSMO) optimization problem. The SGM method can be used in the matrix generation phase of our three‐phase methodology to obtain pairwise comparison matrix at each stage of an MSMO optimization problem, which can be subsequently used to obtain the weight vector at the corresponding stage. The weight vectors across the stages can be used to convert an MSMO problem into a multiple stage, single objective (MSSO) problem, which can be solved using dynamic programming‐based approaches. To obtain a practical set of non‐dominated solutions (also referred to as Pareto optimal solutions) to the MSMO optimization problem, it is important to use a solution approach that has the potential to allow for a better exploration of the Pareto optimal solution space. To accomplish a more exhaustive exploration of the Pareto optimal solution space, the weight vectors that are used to scalarize the MSMO optimization problem into its corresponding MSSO optimization problem should vary across the stages. Distinct weight vectors across the stages are tied directly with distinct pairwise comparison matrices across the stages. A pairwise comparison matrix generation method is said to diverge if it can generate distinct pairwise comparison matrices across the stages of an MSMO optimization problem. In this paper, we demonstrate the SGM method's divergence behaviour when the three‐phase methodology is used in conjunction with an augmented high‐dimensional, continuous‐state stochastic dynamic programming method to solve a large‐scale MSMO optimization problem. Copyright © 2013 John Wiley & Sons, Ltd.     

小学教师课堂教学设计能力发展特点及影响因素

运用作品分析、调查、访谈等研究方法,对小学教师这一特殊群体进行分层随机抽样调查与研究。研究结果表明,小学教师选择与运用教学媒体、编制教学目标、分析教学对象的能力明显低于选择与运用教学方法、分析教学任务、评价教学结果的能力;学校类型、教师学历、教龄是影响小学教师教学设计能力的3个主要因素。     

Effects of stimulus presentation order during auditory–visual conditional discrimination training for children with autism spectrum disorder

Children with autism spectrum disorder are typically taught conditional discriminations using a match‐to‐sample arrangement. Consideration should be given to the temporal order in which antecedent stimuli (the sample and comparison stimuli) are presented during match‐to‐sample trials, as various arrangements have been used in the extant literature. The purpose of the current study was to compare the effects of four stimulus presentation orders on the acquisition of auditory–visual conditional discriminations. The study included participants from a clinically relevant population (three children with autism spectrum disorder), employed clinically relevant teaching procedures, and included two presentation formats not included in previous comparison evaluations (simultaneous and sample‐first with re‐presentation conditions). Results were found to be learner‐specific; that is, a different stimulus presentation format was most efficient for each participant. We provide suggestions to evaluate stimulus control topographies and enhance experimental control in match‐to‐sample arrangements.     

Behavioral effects of testosterone in relation to social rank in the male rabbit

The role of gonadal androgens in favoring the adaptation to environmental pressure, including social organization, is well known. In the rabbit, testosterone administration increases marking behavior, and its level can be affected by agonistic interaction. In this experiment, we studied the effect of subcutaneous administration of testosterone propionate (TP) (3 mg/d for 6 days) in male rabbits belonging to the same social group (6 groups of 4 animals). In 2 additional groups (4 animals each), males were injected with almond oil. The animals were observed for 6 days in seminatural conditions, then treated with TP (or oil) and observed for another 6 days. The dominant/subordinate frequency ratio of behavioral patterns was used to rank the animals. The testosterone plasma concentration was correlated with agonistic behavior after the first period of social interaction. A significant increase of marking, digging, and defensive activity was observed after TP administration in all animals independent of rank, whereas this increase was not present in animals treated with oil. Agonistic and interactive behaviors increased significantly after TP treatment only in the first‐ranking animals. This indicates the influence of social rank in the modification of behaviors involving interactions among subjects Aggr. Behav. 29:269–278, 2003. © 2003 Wiley‐Liss, Inc.     

Sex–related self–concepts, cognitive styles and cultural values of traditionality–modernity as predictors of general and domain–specific sexism

Previous studies have determined that masculinity, femininity, need for closure and authoritarianism are significant predictors of sexism. The present study attempted to integrate these variables in order to better understand the nature of general ambivalent sexism and workplace–specific sexism in Singapore. Chinese traditionality and Chinese modernity were specifically examined as potential predictors of sexism. Robust results from hierarchical regressions indicated that these indigenous cultural variables were highly important in predicting general and workplace–specific sexism. Although masculinity and need for closure were unrelated to sexism, participant sex, femininity and authoritarianism significantly predicted sexist attitudes towards women. Most important, Chinese values were found to add significant incremental validity in predicting sexist attitudes beyond what was accounted by the aforementioned predictors. Chinese traditionality significantly predicted sexist attitudes towards women, but Chinese modernity was unrelated to sexism. Implications of these findings were discussed.