Working memory demands of exact and approximate addition

We compared the working memory requirements of two forms of mental addition: exact calculation (e.g., 63 + 49 = 112) and approximation (e.g., 63 + 49 is about 110). In two experiments, participants solved two-digit addition problems (e.g., 63 + 49) alone and in combination with a working memory task (i.e., remembering four consonants). In Experiment 1, participants chose an answer from two alternatives (e.g., exact: 112 vs. 122; approximate: 110 vs. 140). In Experiment 2, participants responded verbally with exact or approximate answers. In both experiments, the working memory load impaired exact and approximate addition performance, but exact addition was affected more. Load also impaired performance on problems with a carry operation in the units (e.g., 28 + 59 or 76 + 57) more than on problems without a unit carry (e.g., 24 + 53 or 76 + 52). These results identify the carry operation as the source of the working memory demands in multidigit addition.     

Correspondence

Response to Chess Denman's review of Green, André and Stern, Daniel's Clinical and Observational Psychoanalytical Research: Roots of a Controversy. ( JAP , 46, 3)     

Challenge versus threat effects on the goal–performance relationship

This study tested the situational effects of goals and stress on the performance of complex tasks and on adaptation to change in the task. Difficult goals often exceed the individual's resources and thus create stress. However, stress may be appraised as either challenge or threat. Challenge is experienced when there is an opportunity for self-growth with available coping strategies, whereas threat is experienced when the situation is perceived as leading to failure with no available strategies to cope with it. We hypothesized that participants who appraised the situation as a challenge would perform better and adapt better to changes under difficult goal conditions, as compared with general goals or strategy goals. By contrast, threat appraisals would be better addressed by strategy goals rather than difficult goals. One hundred and fifty five students performed a task, which required their making predictions concerning the value of 120 companies' stocks based on three manipulated cues. We used a three by three by two factorial design in which goals, stress, and change (as a repeated factor) were varied to test the hypotheses. Results supported the main hypotheses and demonstrated that the same level of goal difficulty may lead to high or low performance and adaptation to change depending on the appraisal of the situation as challenging or threatening. The theoretical and practical implications of these findings are further discussed.     

临床思维学的教学实践与理论探索

思维是人类理性活动的基本方式,思维能力是最具人类特色的能力,临床思维能力的培养是一个非常重要、然而又常为人们所忽视的问题,主要介绍临床思维学的课程设置、主要内容、教学目的和教学效果,通过对教学实践的阶段性总结,对理论体系进行初步的探索,以推动临床思维学的普及和发展,提高临床诊断治疗水平。     

超出预期策略的实验研究

在先前论文中提出与心理匹配策略相应的,又一用以调节学生学习新材料的学习心向的超出预期策略基础上,本文将该策略运用于数学教学之中,进行现场的教学实验研究。研究结果表明：在数学教学中可以运用超出预期策略对教材内容进行情感性处理,且对调节学生学习心向,提高认知学习的质量是有效的。     

Are University Professors Qualified to Teach Ethics?

In the light of recent talk in Canadian business schools about the importance of teaching courses in business ethics, the authors ask whether business professors have the qualifications required to teach business ethics. They point to various ethical dilemmas that arise in a collegial setting and argue that academics who teach business ethics have to first understand the complex ethical situations in which they find themselves if business ethics is to be taught in a meaningful way.     

专家-熟手-新手型教师教学策略与成就目标、人格特征的关系研究

该研究对不同类型教师的教学策略、成就目标和人格特征的关系进行了探讨,结果表明,新手型教师的教学策略与成绩目标存在显著的负相关,其中成绩——回避目标是其教学策略的有效预测变量,而熟手型教师和专家型教师则与任务目标存在显著的正相关：精神质是新手型教师教学策略的有效预测变量,内外向是熟手型教师教学策略的有效预测变量,而专家型教师的神经质对其教学策略存在着重要的影响。     

A Fine Risk To Be Run? The Ambiguity of Eros and Teacher Responsibility

Teachers are often placed in a space of tensionbetween responding to students as persons andresponding to students through theirinstitutionally-defined roles. Particularlywith respect to eros, which has becomeincreasingly the subject of strictinstitutional legislation and regulation,teachers have little recourse to a language ofresponsibility outside an institutional frame. By studying the significance of communicativeambiguity for responsibility, this paperexplores what is ethically at stake forteachers in erotic forms of communication. Specifically, it is Levinas's own ambiguousunderstanding of the ethical significance oferos, and what we have to learn from it, thatoffers a way of reading the place of eros inresponsibility. I conclude my discussion withsome thoughts on what a renewed understandingof responsibility might mean at the personaland institutional levels.     

Smart and easy: Co-occurring activation of spontaneous trait inferences and spontaneous situational inferences

Social perceivers have been shown to draw spontaneous trait inferences (STI’s) about the behavior of an actor as well as spontaneous situational inferences (SSI’s) about the situation the actor is in. In two studies, we examined inferences about behaviors that allow for both an STI and an SSI. In Experiment 1, using a probe recognition paradigm, we found activation of both STI’s and SSI’s. In Experiment 2, using a relearning paradigm, we again found activation of both STI’s and SSI’s, regardless of temporarily activated processing goals. Results are discussed in light of three-stage models of the process of social inference.     

考前焦虑、成就目标和考试成绩关系的研究

该研究以238名参与者为样本,对其考前焦虑、成就目标及高考成绩进行了考察,采用相关分析和回归分析技术探讨了三者之间的关系.结果表明,高考生的焦虑水平远远高于一般正常人;考前焦虑与掌握趋近目标显著负相关,与掌握回避目标和成绩回避目标显著正相关.掌握趋近目标和掌握回避目标是状态焦虑的预测变量,而特质焦虑的预测变量同时包括四种目标定向;高考总分和英语与考前焦虑显著负相关,成就目标与高考成绩的相关较弱.