加减文字题解决研究概述

加减文字题指应用加减法运算解答的简单数学应用题。基本类型有合并题、变化题和比较题。人们主要采用四种方法研究解题过程：解答问题、回忆和构造问题、建立计算机模型和眼动记录。过去研究发现语义类型、年龄、难以理解的词句、问题陈述的简约性、题材个人化、问题陈述结构、数量大小、未知集类型和解答问题的方式等因素显著影响解题过程。人们对解题过程提出了两种理论模型,一是数学知识应用模型,一是语言理解模型     

Optimistic and pessimistic biases and comparative judgmental processes in Japan: Do people really compare themselves to their peers?

Studies on above-average and unrealistic-optimism effects have recently claimed that they are the consequence of an over-utilization of self-relevant and under-utilization of peer-relevant information, despite the assumption that people would refer to both themselves and their average peer to make a comparative judgment. However, there is a possibility that these tendencies are prevalent only in Western cultures. The present paper reports on three studies of comparative self-other judgments conducted with Japanese university students. The results consistently showed that participants tended to focus simply on their own abilities, traits, or the likelihood of experiencing future life events, without paying much attention to their peers. These findings suggest first that there is a consistent tendency for people to place a greater weight on the self than normative standards when considering their comparative position in a group, and that this tendency is independent of the size or direction of comparative biases.     

组织信任氛围对任务绩效的作用途径

通过问卷调查与结构方程建模分析组织信任对于员工工作绩效的影响途径。203名被试和他们的上司参与了问卷调查。结果分析采用潜变量路径分析方法。我们构建多组模型与构思模型,通过两个阶段的检验,分析了组织信任的作用机制。结果表明：组织信任作用于心理安全感,而心理安全感通过两条独立途径影响工作绩效,分别是工作聚焦与工作改进。心理安全感能够促进员工针对工作的不断改进的行为和探索新工作方法的意愿,同时也有利于员工集中精力在工作上,从而提高个人工作业绩     

SPONTANEOUS REMISSIONS: NORMAN REIDER'S FORGOTTEN PAPER,PART I

Almost sixty years ago, Norman Reider published a paper about spontaneous “remissions” he had observed. He discussed the manner in which psychoanalytic theory provided a way to partially explain these otherwise mysterious remissions or improvements in symptoms, some without benefit of either psychoanalysis or psychotherapy. Especially important were his comments about the negligible role of interpretation or insight in these examples. His conjectures reflected controversies that were current at the time and that remain unsettled. Of special interest is his introduction of some highly original ways to think of applying psychoanalytic ideas to supportive psychotherapy. But few analysts today have heard of this paper. A reconsideration of his paper allows us to be vividly reminded about our enduring and profound confusion about exactly what constitutes a “cure” at all. Spontaneous shifts in the severity of symptoms may be viewed as experiments of nature that we have neglected to investigate as valuable restraints on our immodest therapeutic claims.     

Construction and interpretation by kindergarten and primary school children of a calendar organized in tabular form / Construcción e interpretación de la organización tabular de un calendario en niños de infantil y primaria

Abstract

This study focuses on the performance of children managing double-entries in a weekly calendar. One hundred and four kindergarten and primary school children were interviewed and asked to solve weekly calendar construction and interpretation tasks using cards. The results show a difference between school year levels in the adequate management of a double-entry table when children construct and interpret a calendar; the interpretation process is less complex than the construction process. The results demonstrated that a deep understanding of a calendar requires using cognitive processes of varying degrees of difficulty and complexity. Therefore, there is a need to emphasize educational tasks which not only involve reading the calendar but which also explain its structure (double-entry) through construction tasks.     

The mathematics of sharing / Las matemáticas que realizan los niños al compartir

Abstract

The purpose of sharing is to construct equivalent sets, making it an ideal context for analysing important quantitative concepts such as counting, equivalence and cardinality. Two studies analysed how four- and five-year-olds shared blocks in equal sharing and reciprocity conditions and their number inferences about one set after counting the other. The researcher asked children to share double and single blocks between two characters. They succeeded more in building equivalent shares in an equal sharing than reciprocity condition. Most children who shared correctly also made appropriate number inferences. To examine whether perceptual cues helped children share the blocks, a second study used Canadian $1 and $2 coins. A double block is twice the size of a single, whereas there is no visual cue about the value relation between coins because they are the same size. Unexpectedly, children shared equally well with blocks and coins, and most children made number inferences.     

The predictive accuracy of intertemporal‐choice models

How do people choose between a smaller reward available sooner and a larger reward available later? Past research has evaluated models of intertemporal choice by measuring goodness of fit or identifying which decision‐making anomalies they can accommodate. An alternative criterion for model quality, which is partly antithetical to these standard criteria, is predictive accuracy. We used cross‐validation to examine how well 10 models of intertemporal choice could predict behaviour in a 100‐trial binary‐decision task. Many models achieved the apparent ceiling of 85% accuracy, even with smaller training sets. When noise was added to the training set, however, a simple logistic‐regression model we call the difference model performed particularly well. In many situations, between‐model differences in predictive accuracy may be small, contrary to long‐standing controversy over the modelling question in research on intertemporal choice, but the simplicity and robustness of the difference model recommend it to future use.     

Behavioral variability in an evolutionary theory of behavior dynamics

McDowell’s evolutionary theory of behavior dynamics (McDowell, 2004) instantiates populations of behaviors (abstractly represented by integers) that evolve under the selection pressure of the environment in the form of positive reinforcement. Each generation gives rise to the next via low‐level Darwinian processes of selection, recombination, and mutation. The emergent patterns can be analyzed and compared to those produced by biological organisms. The purpose of this project was to explore the effects of high mutation rates on behavioral variability in environments that arranged different reinforcer rates and magnitudes. Behavioral variability increased with the rate of mutation. High reinforcer rates and magnitudes reduced these effects; low reinforcer rates and magnitudes augmented them. These results are in agreement with live‐organism research on behavioral variability. Various combinations of mutation rates, reinforcer rates, and reinforcer magnitudes produced similar high‐level outcomes (equifinality). These findings suggest that the independent variables that describe an experimental condition interact; that is, they do not influence behavior independently. These conclusions have implications for the interpretation of high levels of variability, mathematical undermatching, and the matching theory. The last part of the discussion centers on a potential biological counterpart for the rate of mutation, namely spontaneous fluctuations in the brain's default mode network.