Effects of age,stimuli, and category recognition factors in children's inquiry behavior

One hundred twenty-eight children of average intellectual ability from grades K, 1, 2, and 5 (ages 6, 7, 8, and 11, respectively) were administered a 20-questions task involving the presentation of 24 stimulus pictures and a forced-choice post-test. The four-factor design included four grade levels, two stimulus conditions (basic-level and superordinate), and two instruction conditions (cueing and non-cueing) for boys and girls. Results indicated older children generated more efficient questions, all children in the Cued-instruction condition asked more constraint-seeking questions in the Basic-level condition than in the Superordinate condition on the 20-questions task, and all children in the Basic-level condition selected more efficient questions in the post-test forced-choice task than in Superordinate condition. It was concluded that even younger school-age children will generate efficient constraint-seeking questions when Basic-level stimuli are used and when children are cued.     

Recipient mood states and helping behavior

Three studies investigated the effects of perceived recipient mood on helping behavior. Based upon Schwartz' (in Advances in experimental social psychology, Vol. 10, N.Y.: Academic Press, 1977) discussion of need-based helping, it was predicted that donors would perceive greater psychological need and would help more when the recipient's mood was negative than when it was neutral. These predictions were confirmed for females but not for males. The results also confirmed the hypothesis, derived from Schwartz (1977), that a negative recipient mood would elicit greater helping than a neutral recipient mood when this mood is perceived as changeable but not when it is perceived as unchangeable.     

Piagetian tasks measure intelligence and intelligence tests assess cognitive development: A reanalysis

A reanalysis of the intercorrelations of Wechsler subtests, achievements tests, and Piagetian tasks originally published by Stephens et al. (1972) has corrected errors in the original design and has used models which allow both differences and similarities to appear. Unit weighted composites of the two sets of tests were formed after first partialling chronological age out of the complete table of intercorrelations. The correlation between the composites is .876 which corrects, using split-half estimates of reliabilities, to .918. Next the matrix of partial correlations was factored and the factors rotated to a hierarchical structure. Piagetian tasks contribute almost equally to the definition of the general factor in intelligence along with the Wechsler subtests and the achievement tests. The general factor, furthermore, makes the single largest contribution to the variance of most of the measures of both sets. The smaller group factors consist of an Academic Achievement factor and three Piagetian factors. Of the latter the largest and most clearly identified is the factor called Operational Thought in the earlier analysis, but is here described simply as Conservation. It is concluded that the evidence for communality in function far outweighs the differences between intelligence tests and Piagetian tasks.     

戚继光对孙膑军队建设思想的继承和发展

戚继光对孙膑军队建设思想的继承和发展主要表现在三个方面.在练将方面,戚继光不仅继承和发展了孙膑的将领优良论,而且详细论述了孙膑所未提及的练将方法;在练兵方面,戚继光不仅继承和发展了孙膑的选兵理论和练士气理论,而且具体论述了如何训练号令、阵法和武艺等问题,这是对孙膑练兵思想的发展;在治军诸因素关系方面,戚继光在继承孙膑思想的基础上,科学地提出了自己的独到见解,从而使其军队建设思想形成了一个系统而完整的体系.     

Resurrecting the Moorean Response to the Sceptic

G. E. Moore famously offered a strikingly straightforward response to the radical sceptic which simply consisted of the claim that one could know, on the basis of one's knowledge that one has hands, that there exists an external world. In general, the Moorean response to scepticism maintains that we can know the denials of sceptical hypotheses on the basis of our knowledge of everyday propositions. In the recent literature two proposals have been put forward to try to accommodate, to varying extents, this Moorean thesis. On the one hand, there are those who endorse an externalist version of contextualism, such as Keith DeRose, who have claimed that there must be some contexts in which Moore is right. More radically still, Ernest Sosa has expanded on this externalist thesis by arguing that, contra DeRose's contextualism, Moore may be right in all contexts. In this paper I evaluate these claims and argue that, suitably modified, one can resurrect the main elements of the Moorean anti-sceptical thesis.     

A test of the X-linked genetic hypothesis for sex differences on Piaget's water-level task

Data from seven studies involving 849 high school and college students were used to test the recessive X-linked genetic model prediction that the square of the proportion of men who perform accurately on the water-level task is equal to the proportion of women who perform accurately. Goodness-of-fit tests showed that this prediction was confirmed for each sample. A model with a single estimate of gene frequency accounted for all the data when a classification error parameter was incorporated into the X-linked model. In both models the gene frequency parameter was about $\text{2}\text{3}$.     

Another psychobiological view of sexual differentiation

The major psychobiological theory of sex differences is based on the hypothesis that hormones induce sex differences in neural organization. Hormonally masculinized or feminized brains are thought to underlie subsequent behavioral sex differences. This theory and the constructs, arguments, and evidence used in its support are closely examined. Some conceptual problems with widely used arguments are identified and discussed. Behavioral, physiological, and anatomical evidence from studies of animal sexual behavior is reviewed. It is concluded that the evidence fails to support generally accepted views that early hormones affect behavior through direct effects on brain differentiation and that behavioral differences must be located in the brain. It is argued instead that hormones coact and interact with other factors throughout development, that brain differences may result from as well as cause functional differences, and that hormone-based sources of sex differences may be located throughout the body and in the social surround. Directions for new research are suggested and implications for interpretation of human sex differences are discussed.     

The effects of visual feedback on hemispheric alpha asymmetries and reported processing strategies: a single-subject experimental design

A double reversal single-subject experimental design was used to study the effects of visual feedback on the hemispheric alpha asymmetries of a male subject during a linguistic task. Results indicated that the subject demonstrated flexibility in hemispheric alpha and corresponding processing strategies employed when an alpha biofeedback procedure was used. These results provide further support for the notion that right and left hemispheric activation is associated with different, yet compatible, cognitive strategies and that both can be manipulated under conditions of feedback.