乐观性对自我反思和内在觉知与心理健康之间关系的调节作用

本研究的主要目的是检验乐观性对自我反思和内在觉知与心理健康之间关系的调节作用。研究被试为来自北京市三所高校的568名大学生,所采用的主要测量工具有:个人自我意识量表,乐观性问卷、自尊量表和一般健康问卷(GHQ-20)。主要研究结果为:(1)乐观性可以调节自我反思和一般健康状况之间的关系、但是不可以调节自我反思和自尊之间的关系;(2)乐观性可以调节内在觉知和一般健康状况之间的关系,同时也可以调节自我反思和自尊之间的关系。本研究的主要结论是:乐观性对于自我反思和内在觉知与心理健康之间关系的调节作用假设得到部分支持。     

任务结构相似性对工作记忆训练迁移效应的影响

个体的工作记忆能力通过训练可以提高,但是,目前对于工作记忆训练的迁移效应尚未有统一的结论。本文通过梳理相关研究,发现训练任务与评估迁移效应任务之间的结构相似性会对迁移效应产生影响。结构相似性即训练任务和未训练任务之间共享加工成分和加工程序,而这个共享加工成分和加工程序能通过发展相似的策略实现工作记忆训练的迁移。今后研究应该更加注意以往研究设计中的不足,针对不同群体的工作记忆训练效果的机制分别进行研究。     

Horizontal and vertical Simon effect: different underlying mechanisms?

Reaction times are usually faster when stimulus and response occur at the same location than when they do not, even if stimulus location is irrelevant to the task (Simon effect). This effect was found with both horizontal and vertical stimulus-response arrangements. The same mechanisms have been proposed to be involved in either case. Here, we compared a horizontal and a vertical Simon task by means of a RT time-course analysis of the Simon effect. Also, we analysed the lateralised readiness potential (LRP), an index of covert response-preparation processes. In the horizontal task, the Simon effect decays over time and pre-activation occurs above the motor cortex ipsilateral to the stimulus. In contrast, the Simon effect does not decay over time and no early incorrect LRP deflection is observed in the vertical task. These findings suggest that typical activation accounts can fit only the horizontal Simon effect, while a translation explanation is more suitable for the vertical Simon effect.     

Disjunction Between Probability and Verdict in Juror Decision Making

Although the law assumes a close relation between the probability that a defendant committed the act in question and the ensuing verdict of the jurors, prior research has shown this assumption to be often violated. We present five experiments designed to show that factors that influence probability also influence verdict, but other factors are capable of directly producing changes in verdict without affecting probability. In Experiment 1, we replicated the Wells Effect; scenarios generating the same probability that the Blue Bus Company was to blame for the same accident, nevertheless, generated significantly different likelihoods of finding the defendant liable. In Experiment 2, we showed that equally diagnostic affirmative and negative evidence had differential effects on mock jurors' probability estimates and verdicts. In Experiment 3, we showed that a completely nondiagnostic witness, who either implicates the same bus company or a different bus company as did a diagnostic witness, significantly influenced mock jurors' verdicts. However, the nondiagnostic witness did not change the probability that the Blue Bus Company was responsible for the accident. In Experiment 4, we demonstrated that base rate and witness reliability information resulted in very similar probability estimates but radically different verdicts. In Experiment 5, we showed that a change in the diagnosticity of the evidence influenced both probability and verdict with the former mediating differences in the later. Because probability is only one of the several determinants of the verdict, the two dependent variables are not as closely related as the law presumes. Copyright © 2011 John Wiley & Sons, Ltd.     

Evaluating single-case research data for systematic review: A commentary for the special issue

The purpose of this commentary is to provide observation on the statistical procedures described throughout this special section from the perspective of researchers with experience in conducting systematic reviews and meta-analyses of single-case research to address issues of evidence-based practice. It is our position that both visual and statistical analyses are complimentary methods for evaluating single-case research data for these purposes. Given the recent developments regarding the use of single-case research to inform evidence-based practice and policy, the developments described in the present issue will be contextualized within the need for a widely accepted process for data evaluation to assist with extending the impact of single-case research. The commentary will, therefore, begin with providing an overview of the conceptual underpinnings of a systematic review of single-case research and will be followed by a discussion of several features that are essential to the development of a conceptually sound and widely used statistical procedure for single-case research. The commentary will conclude with recommendations and guidelines for the use of both visual and statistical analyses within primary research reports and recommendations for future research.     

Meta- and statistical analysis of single-case intervention research data: Quantitative gifts and a wish list

In this commentary, we add to the spirit of the articles appearing in the special series devoted to meta- and statistical analysis of single-case intervention-design data. Following a brief discussion of historical factors leading to our initial involvement in statistical analysis of such data, we discuss: (a) the value added by including statistical-analysis recommendations in the What Works Clearinghouse Standards for single-case intervention designs; (b) the importance of visual analysis in single-case intervention research, along with the distinctive role that could be played by single-case effect-size measures; and (c) the elevated internal validity and statistical-conclusion validity afforded by the incorporation of various forms of randomization into basic single-case design structures. For the future, we envision more widespread application of quantitative analyses, as critical adjuncts to visual analysis, in both primary single-case intervention research studies and literature reviews in the behavioral, educational, and health sciences.     

Inter-word eye behaviour during reading is not invariant to character size: Evidence against systematic saccadic range error in reading

The present study re-investigated the effect of character size on eye behaviour during reading, in order to test McConkie, Kerr, Reddix, and Zola's (1988 McConkie, G. W., Kerr, P. W., Reddix, M. D., & Zola, D. (1988). Eye movement control during reading: I. The location of initial eye fixations on words. Vision Research, 28(10), 1107–1118. doi:10.1016/0042-6989(88)90137-X[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]) Saccadic Range Error (SRE) hypothesis. This assumes that saccades are biased to move the eyes a constant, optimal distance in the task (i.e., range error), while aiming at the centre of peripherally selected target words. Results showed in contradiction with this hypothesis, (1) that the linear relationship between the eye launch site and the mean landing sites in words is not invariant to character size, and (2) that the optimal launch-site distance to the centre of words varies depending on the spatial extent of the words, and differs from the mean length of saccades in the task. We propose an alternative, Center-of-Gravity hypothesis, which a priori accounts for the launch-site effect and its variations with character size, and suggests that research in reading may benefit from reconsidering the role of character size.     

A sciencing programme and young children's exploratory play in the sandpit

A six-week sciencing programme, directed at stimulating exploratory play, was implemented with 2- and 3-year-olds in a day-care centre. The core of the programme consisted of guided play with children in the centre's sandpit. The effectiveness of the programme was determined with ecologically valid methods consisting of pre- and post-observations of children's exploratory behaviour during free sandpit play in the experimental group as well as in a control group. A systematic observation scheme for exploratory play, the Exploratory Play Scale, was used for this purpose. The experimental group showed an increase in level of exploratory play from pre- to post-observations, while the control group did not. This study shows that a small-scale sciencing programme can have an effect on children's level of free exploratory play.     

The Baldwin Effect and the persistent problem of Preformation versus Epigenesis

Despite the relatively recent ascendency of epigenetics as a subfield in biology, the issues at its heart have a much longer past. Similarly, psychology's part in this discussion is not new. This article examines one of the earliest engagements of a psychologist with what is now known as epigenetics. Briefly: in 1896, American developmental psychologist James Mark Baldwin proposed an evolutionary theory that has come to be known as the “Baldwin Effect” (so coined by Simpson, 1953). Baldwin's theory asserts that learning may set the course of biological evolution in a non-Lamarckian manner. In proposing this theory he provided a needed intermediate to Darwinian natural selection and the Lamarckian inheritance of acquired characteristics. The value of detailing how Baldwin came to put forward this theory, in light of recent advances, is that it illuminates some of the persistent arguments in the Preformation versus Epigenesis debate. Insofar as these debates continue, examining the origins of the Baldwin Effect provides useful insights.