The Construction of Symmetry in Children and Adults

The development of the concept of symmetry is important to an overall understanding of cognitive development in children and to spatial cognition in particular. Age differences in the construction of the 3 types of symmetry (bilateral, translational, and radial) were investigated in children and adults engaged in block construction. Children 2–4.5 years old produced bilateral symmetry in low frequencies independent of their precise vertical alignment of blocks. Children 4–12 years old and adults produced all 3 types of symmetry. The hypothesis predicting the sequence and frequency of the 3 types of symmetry based on an analysis of spatial complexity was partially supported. Bilateral symmetry was produced at significantly higher frequencies than the other 2 types across all age groups. Children 5–12 years old produced adult levels of bilateral symmetry while children 9–12 years old reached adult levels of construction of translational and radial symmetry.     

EVOLUTIONARY THEODICY,REDEMPTION, AND TIME

Of the many problems which evolutionary theodicy tries to address, the ones of animal suffering and extinction seem especially intractable. In this essay, I show how C. D. Broad's growing block conception of time does much to ameliorate the problems. Additionally, I suggest it leads to another way of understanding the soul. Instead of it being understood as a substance, it is seen as a history—a history which is resurrected in the end times. Correspondingly, redemption, I argue, should not be seen as an event which redeems some future portion of time. God's triumph is over all of history, not just some future temporal portion.     

Hilda Oakeley on Idealism,History and the Real Past

In the early twentieth century, Hilda Diana Oakeley (1867–1950) set out a new kind of British idealism. Oakeley is an idealist in the sense that she holds mind to actively contribute to the features of experience, but she also accepts that there is a world independent of mind. One of her central contributions to the idealist tradition is her thesis that minds construct our experiences using memory. This paper explores the theses underlying her idealism, and shows how they are intricately connected to the wider debates of her period. I go on to explain how the parts of Oakeley's idealism are connected to further areas of her thought – specifically, her views on history and her growing block theory of time – to provide a sense of Oakeley's philosophy as a system. As there is no existing literature on Oakeley, this paper aims to open a path for further scholarship.     

No ground for doomsday

The ability of providing an adequate supervenience base for tensed truths may seem to be one of the main theoretical advantages of both the growing-block and the moving-spotlight theory of time over presentism. However, in this paper I will argue that some propositions appear to be as problematic for growing-block theorists as past-directed propositions are for presentists, namely propositions stating that nothing will be the case in the future. Furthermore, I will show that the moving-spotlight theory can adequately address all the main supervenience challenges that can be levelled against A-theories of time. I will, thus, conclude that, at least as far as the supervenience principle is concerned, the moving-spotlight theory should be preferred over both presentism and the growing-block theory.     

Preschool teachers' pedagogical content knowledge predicts willingness to scaffold early science learning

Background

The importance of diagnostic and scaffolding activities for early science learning has been shown consistently. However, preschool teachers scarcely engage in them. We developed an instrument to assess preschool teachers' willingness to engage in diagnostic and scaffolding activities in science learning situations and examined its relation with teachers' knowledge, beliefs and practice.

Aims

We validate an instrument to assess willingness to engage in scaffolding and diagnostic activities and study the interplay between willingness, learning beliefs, content knowledge (CK) and pedagogical content knowledge (PCK) in the context of science learning, particularly block play.

Sample(s)

A total of N = 151 preschool teachers from 41 kindergartens in Germany participated in our study.

Methods

Preschool teachers completed a questionnaire, which took approximately 1 hour of time. We drew a subsample of N = 73 teachers and observed their practice during a 30 min block play episode.

Results

With our instrument, we were able to distinguish between preschool teachers' willingness to diagnose and to scaffold. Preschool teachers' co-constructivist beliefs and PCK predicted willingness to engage in diagnosing, PCK also predicted willingness to engage in scaffolding. Associations between learning beliefs and practice were inconsistent.

Conclusions

Our study highlights aspects of the association between preschool teachers' PCK and their willingness to engage in diagnosing and scaffolding. However, we found inconsistencies between preschool teachers' beliefs and practice, which call for further clarification.     

The development of adaptive choice in a self-control paradigm

Sixteen girls (ages 4, 6, 9, and 12) performed on concurrent-chain schedules of reinforcement. The initial links were variable-interval 10-s schedules, and the terminal links offered a long delay (20, 30, 40, or 50 s) followed by two tokens or a short delay (10 s) followed by one token. Tokens were used to buy toys and sweets. The effect of increasing the delay to the large reward differed significantly across age groups. Whereas 6- and 9-year-olds maintained a strong preference for the larger, more delayed reward under all delay conditions, half of the 4-year-olds and all the 12-year-olds showed increasing preference for the small reward as the delay to the large reward increased. The results suggest a two-stage account of the development of self-control. In the first stage, behavior is increasingly controlled by reward size, as children learn how to wait for delayed rewards, and in the second phase behavior is increasingly controlled by reward rate, as children learn when it is in fact profitable to wait.     

心理异常中“一般心理问题“的判别标准与临床表现

心理异常是相对于心理健康而言的。心理异常不仅是指心理障碍、心理疾病以及心身障碍和心身疾病,而且也包括一般心理问题。人们通常认为的所谓“心理障碍”以及心理辅导和心理咨询中常见的心理异常,大量的还是指一般心理问题。本文就一般心理问题的判别标准以及各种主要一般心理问题的临床表现与鉴别诊断作了有益的探索,为心理辅导和心理咨询工作提供了心理学依据。     

Least squares metric,unidimensional scaling of multivariate linear models

The squared error loss function for the unidimensional metric scaling problem has a special geometry. It is possible to efficiently find the global minimum for every coordinate conditioned on every other coordinate being held fixed. This approach is generalized to the case in which the coordinates are polynomial functions of exogenous variables. The algorithms shown in the paper are linear in the number of parameters. They always descend and, at convergence, every coefficient of every polynomial is at its global minimum conditioned on every other parameter being held fixed. Convergence is very rapid and Monte Carlo tests show the basic procedure almost always converges to the overall global minimum.The author thanks Ivo Molenaar, three anonymous referees, and Howard Rosenthal for their many helpful comments.     

A replication of preference displacement research in children with autism spectrum disorder

The purpose of this paper was to replicate previous research on preference displacement with edible and leisure stimuli. In the present study, the experimenters evaluated preference displacement in 25 children with autism spectrum disorder using combined multiple stimulus without replacement preference assessments that consisted of highly preferred edible and leisure stimuli. In addition, the experimenters used a block randomization procedure to evaluate if assessment order influenced displacement outcomes. The experimenters observed patterns of complete displacement by edible stimuli for four participants and complete displacement by leisure stimuli for two participants; assessment order did not influence outcomes. The results and implications are discussed.     

朱熹《春秋》学考述

宋代大儒朱熹对儒家的许多经典都有精深的研究 ,唯独对《春秋》一经很少作出讲解和阐发。他虽然不敢否定《春秋》的经典地位 ,但他反对“一字褒贬”说 ,反对以“例”说春秋 ,对三传以及历代经师的解经表示出了强烈的怀疑 ;同时 ,对在当时有着重要影响的程颐与胡安国的《春秋传》也提出了批评。他的客观求实的态度 ,在当时的儒者中独树一帜 ,他对《春秋》经传的看法 ,在学术史上有着重要的地位。