Acquisition and Automatization of a Complex Task: An Examination of Three-Ball Cascade Juggling

The learning patterns of 3-ball cascade juggling from acquisition until automaticity were examined in 10 participants. On the basis of outcome measures derived from 26 practice sessions and 4 periodic probe sessions, the authors differentiated participants into 3 distinct learning types: a proficient group, an emerging group, and a single late learner. The proficient group was distinguished by how rapidly they learned and automatized performance. Most interesting, an inverse response cost (i.e., performance boost) on the secondary task was found in the majority of proficient group members during the dual-task condition. The present results are discussed in relation to the P. L. Ackerman model (1987, 1988) of complex skill acquisition as is the significance of the inverse response cost finding.     

Variation in Coordination of a Discrete Multiarticular Action as a Function of Skill Level

The authors investigated coordination modes that emerged as a function of the interaction between skill level and task constraints in a multiarticular kicking action. Five skilled, 5 intermediate, and 5 novice participants attempted to satisfy specific height and accuracy constraints in kicking a ball over a barrier. Skilled and intermediate groups demonstrated a functional coordination mode involving less joint involvement at the proximal joints and greater joint involvement at distal joints, mimicking a chip-like action in soccer. Conversely, the novice group tended to produce larger ranges of motion throughout the kicking limb in a driving-like kicking action. Key differences were also found for task outcome scores, joint angle-angle relations, and ball-trajectory plots between the skilled and intermediate groups and the novice group. Findings from this study demonstrated that joint involvement during this discrete multiarticular action is a function of skill level and task constraints rather than a consequence of a global freezing-freeing strategy suggested in some previous research. The authors also highlight the merit of using a model of the acquisition of coordination in examining how coordination modes for multiarticular actions differ as a function of skill.     

Community Organization and Planning Consultation

This paper focuses upon the role of the occupational therapist as a health agent with resultant responsibilities for participation in health planning and preventative program development. Included is a discussion of community problem solving methods, an overview of community organization, and principles of preventative intervention. A community-wide assessment methodology upon which to base planning decisions is presented. The principles of prevention, community assessment, and occupational therapy program development are emphasized through a discussion of a mental health model which evolved in a military community.     

Socioanalytic theory and work behavior: Roles of work values and political skill in job performance and promotability assessment

Socioanalytic theory postulates that job performance ratings are predicted by basic social motives moderated by social competency. The two motives are the motive to get along with others and the motive to achieve status and power. The present two-study investigation assessed these motives as work values and collected supervisors' job performance and promotability assessments. Social competency was assessed as political skill at work. The results provided strong and consistent support for the hypotheses, thus providing a more direct test of socioanalytic theory and extending it to demonstrate effects beyond overall job performance ratings on contextual performance and promotability assessments. Contributions and implications of these results, strengths and limitations, directions for future research, and practical implications are discussed.     

Individual differences in the neural basis of causal inferencing

This study used fMRI to examine individual differences in the neural basis of causal inferencing. Participants with varying language skill levels, as indexed by scores on the vocabulary portion of the Nelson-Denny Reading Test, read four types of two-sentence passages in which causal relatedness (moderate and distant) and presence or absence of explicit clause connectives were orthogonally varied to manipulate coherence and cohesion during inference generation. Skilled readers showed better neural efficiency (less activation) during all context sentences and during all inference conditions. Increased activation in less-skilled readers was most extensively distributed in the right hemisphere (RH) homologues of left hemisphere (LH) language areas, especially in the most difficult passage types. Skilled readers also showed greater sensitivity to coherence (greater activation and synchronization in moderately related than distantly related passages) whereas less-skilled readers showed sensitivity to cohesion (greater activation and synchronization when clause connectives were present than when they were not). These finding support the hypothesis that skilled reading comprehension requires recruitment of the RH on an “as needed” basis. We describe the dynamic spillover hypothesis, a new theoretical framework that outlines the conditions under which RH language contributions are most likely evoked.     

VIRTUE AS MASTERY IN EARLY CONFUCIANISM

This essay explores the interrelation of skills and virtues. I first trace one line of analysis from Aristotle to Alasdair MacIntyre, which argues that there is a categorical difference between skills and virtues, in their ends and intrinsic character. This familiar distinction is fine in certain respects but still importantly misleading. Virtue in general, and also some particular virtues such as ritual propriety and practical wisdom, are not just exercised in practical contexts, but are in fact partially constituted by the mastery of certain skills. This has implications for moral psychology, specifically how we might understand the acquisition of virtue, as well as its very nature. To try to make this claim plausible I analyze two case studies from early Confucianism: treatment of ritual propriety as a cardinal virtue, and Mencius's less carefully integrated treatment of excellence at moral discernment. I conclude by revisiting the question of the relations between skill and virtue, and exploring a few of the difficulties implied by my account of early Confucian ethics.     

Overcoming the myth of the mental

Can we accept John McDowell’s Kantian claim that perception is conceptual “all the way out,” thereby denying the more basic perceptual capacities we seem to share with prelinguistic infants and higher animals? More generally, can philosophers successfully describe the conceptual upper floors of the edifice of knowledge while ignoring the embodied coping going on on the ground floor? I argue that we shouldn’t leave the conceptual component of our lives hanging in midair and suggest how philosophers who want to understand knowledge and action can profit from a phenomenological analysis of the nonconceptual embodied coping skills we share with animals and infants, as well as the nonconceptual immediate intuitive understanding exhibited by experts.     

小学三年级句群教学实验研究

探讨在小学三年级句群教学条件下,样例的不同呈现方式与练习方法对形成有关图式及其技能的影响。同时,考察陈述性知识、认知技能(一般程序性知识)和策略相互间的关系及对被试任务操作的影响效果。研究结果表明：(1)在实验班中,同时呈现两个以上样例并加以归纳,再循序渐进地进行变式练习,有利于图式与技能形成以及类比迁移,且中差生获益较大;(2)在被试的任务操作中,陈述性知识主效应非常显著,其次为认知技能,再次为策略,陈述性知识和认知技能之间存在显著交互作用。     

技能学习与重复启动基本机制问题的探讨

关于技能学习与重复启动的基本机制问题在学术界存有很大的争议．对其进行探讨将会对从整体上考察程序性记忆的性质产生重要的影响。此文主要从函数形式、相关性和增减模式的理论分析,数字输入任务的计算模型．程序性记忆和学习的观点几个方面探讨了有关问题,说明技能学习与重复启动是程序性记忆的不同表现形式,它们有着相同的基本机制。     

Does degree of asymmetry relate to performance? An investigation of word recognition and reading in consistent and mixed handers

Is it advantageous to be strongly lateralized? The current study investigated this question by examining the relationship between visual field asymmetries for lexical tasks and reading performance in a sample of 200 young adults. Larger visual field asymmetries were associated with better reading performance, but this relationship was obtained primarily in those with strong and consistent hand preferences. Among mixed handers, variation in visual field asymmetry accounted for little or no variance in reading skill. In addition, correlations between visual field asymmetry and reading performance were observed for word recognition tasks, but not for tasks requiring controlled semantic retrieval. The results are consistent with the idea that consistent and mixed handers may represent differing neurobehavioral populations. Because greater lateralization was associated with better reading skill only for consistent handers, reduced behavioral asymmetry cannot be assumed to be a risk factor for reading dysfunction in the population as a whole.