Conceptual Organization and Memory in Nonretarded,Mildly Retarded,and Moderately Retarded Adults

Moderately retarded, mildly retarded, and nonretarded adults learned a list of 12 items from three categories to a criterion of 75% correct recall in a freerecall learning paradigm. Retention was measured 1 week later. The moderately retarded took more trials and had lower retention and clustering scores than the others. The mildly retarded took more trials and had lower retention than the nonretarded. The results violate Murdock's total time hypothesis (Cooper & Pantle, 1967) but support Mandler's (1967) contention that learning is enhanced by the mental capacity for organization.     

Effects of Cortical Lesions upon the Onset of Hoarding in Rats

Psychologists agree that play is an essential ingredient in a child's development. The present investigation evaluated the effects of an intensive period of dramatic play upon the cognitive structures of young children (N = 12 boys and girls, ages 3 to 5 years) using repertory grids to extract their systems of personal constructs. The period of dramatic play produced substantial and sustained improvements in the numbers of constructs, which confirms the importance of play in cognitive growth. The findings are also taken to support the value of drama therapy in bringing about cognitive change in the mentally ill.     

Development of Force Adaptation During Childhood

Humans learn to make reaching movements in novel dynamic environments by acquiring an internal motor model of their limb dynamics. Here, the authors investigated how 4- to 11-year-old children (N = 39) and adults (N = 7) adapted to changes in arm dynamics, and they examined whether those data support the view that the human brain acquires inverse dynamics models (IDM) during development. While external damping forces were applied, the children learned to perform goal-directed forearm flexion movements. After changes in damping, all children showed kinematic aftereffects indicative of a neural controller that still attempted to compensate the no longer existing damping force. With increasing age, the number of trials toward complete adaptation decreased. When damping was present, forearm paths were most perturbed and most variable in the youngest children but were improved in the older children. The findings indicate that the neural representations of limb dynamics are less precise in children and less stable in time than those of adults. Such controller instability might be a primary cause of the high kinematic variability observed in many motor tasks during childhood. Finally, the young children were not able to update those models at the same rate as the older children, who, in turn, adapted more slowly than adults. In conclusion, the ability to adapt to unknown forces is a developmental achievement. The present results are consistent with the view that the acquisition and modification of internal models of the limb dynamics form the basis of that adaptive process.     

Facilitation of Psychomotor Learning by Classically Differentiated Supplementary Feedback Cues

2 experiments on the control of psychomotor performance by classically differentiated supplementary feedback cues are reported. The first, conducted with 30 Ss as a replication of an earlier study, demonstrated again that otherwise ineffective supplementary cues can be transformed into highly effective regulators of psychomotor performance by differential conditioning procedures. The second, conducted with 78 Ss, showed that the effects of classically differentiated supplementary cues on tracking skill increased as a negatively accelerated function of the number of differentiation trials. Results were interpreted as exemplifying the operation of secondary drive and reinforcement principles, although the nonspecific transfer of arousal and/or warm-up effects were acknowledged as worthy alternatives.     

希望:心理学的研究述评

在对Snyder希望理论进行概括的基础上,将之与其他几个相关的概念如乐观、个人成长主动性、自信和未来取向等进行比较,并介绍了测量希望的工具.希望与学业成绩、心理健康、生理健康以及企业的领导力和员工表现是有密切联系的,且可能在物质滥用治疗中有一定的作用.关于希望概念近年来不断有新的研究出现,目前在基本概念、文化适应、神经生物机制以及应用研究等方面仍存在进一步研究之必要.     

Wolterstorff on Love and Justice

In Justice in Love, Nicholas Wolterstorff argues for a unique ethical orientation called “care‐agapism.” He offers it as an alternative to theories of benevolence‐agapism found in Christian ethics on the one hand and to the philosophical orientations of egoism, utilitarianism, and eudaimonism on the other. The purported uniqueness and superiority of his theory lies in its ability to account for the conceptual compatibility of love and justice while also positively incorporating self‐love. Yet in attempting to articulate a “bestowed worth” account of human dignity—in which dignity is given by divine love and respected in acts of justice—Wolterstorff leans on an unstable characterization of how love and the good are conceptually interwoven. As a result, his reader cannot be sure about the theoretical superiority of care‐agapism. Moreover, Wolterstorff's attempt to value self‐love and at the same time reject eudaimonism depends on a dubious interpretation of Augustine carried over from Justice: Rights and Wrongs, which itself further depends on a mischaracterization of the possible varieties of eudaimonism. This mistake is unfortunate because, on a closer reading of Augustine, one finds an agapistic account of eudaimonism that could have significantly helped Wolterstorff's overall account of the complementary relation of love and justice.     

BUDDHIST ETHICS: A Review Essay

I argue that three recent studies (Imagining the Life Course, by Nancy Eberhardt; Sensory Biographies, by Robert Desjarlais; and How to Behave, by Anne Hansen) advance the field of Buddhist Ethics in the direction of the empirical study of morality. I situate their work within a larger context of moral anthropology, that is, the study of human nature in its limits and capacities for moral agency. Each of these books offers a finely grained account of particular and local Buddhist ways of interpreting human life and morality, and each explores complex conceptions of moral agency. I suggest that these three studies share similar interests in moral psychology, the human being across time, the intersubjective dimensions of moral experience, and what life within a karmic framework looks like. I propose that their contributions offer some of the most refreshing and interesting work generated in Buddhist ethics in the last decade.