Learning a new skill, even a seemingly simple one, can be an overwhelming task for a beginner. A question often faced by the practitioner as a result is whether or not to break the skill into parts for initial practice. Skill complexity and skill organization interact to provide direction as to whether whole or part practice should be employed in…

In manual assembly work, parts are often assembled by applying force with a simple tool or by hand. A worker thus needs control the force he or she applies in working, as an appropriate level of force is requisite for minimizing work failures and improving efficiency. The object of this study is to clarify the relationship between the level of…

With increasing convenience and prevalence, the distant communication application has become a promising way for individuals who are eager to cooperate and interact virtually. This study explored the question of whether the collaborative interaction of the virtual teams has any effect on the conflict and network structure of virtual groups. A…

Language in autism has been the subject of intense interest, because communication deficits are central to the disorder, and because autism serves as an arena for testing theories of language acquisition. High-functioning older children with autism are often considered to have intact grammatical abilities, despite pragmatic impairments. Given the…

This study examined the percentage of task-sampling variability in performance assessment via a meta-analysis. In total, 50 studies containing 130 independent data sets were analyzed. Overall results indicate that the percentage of variance for (a) differential difficulty of task was roughly 12% and (b) examinee's differential performance of the…

In this article, we present an approach to the automatic correction of preposition errors in L2 English. Our system, based on a maximum entropy classifier, achieves average precision of 42% and recall of 35% on this task. The discussion of results obtained on correct and incorrect data aims to establish what characteristics of L2 writing prove…

This research explores learner-learner interactions (n = 18) in an authentic EFL classroom. First, we examined the nature of interactional feedback provided during two decision-making tasks. We then investigated whether the learners had made use of the feedback by looking at whether (and if so, how) they had modified their output immediately after…

Preschoolers' theory of mind (ToM) was examined in relation to emotional features of their conflicts with siblings, using mothers as privileged informants. Fifty-four children aged 3 to 5 years and their 54 mothers took part. Children were given 10 standard false belief tasks and a standardized language test. Mothers completed questionnaires,…

This study investigated differences in attention and learning among Guatemalan Mayan and European American children, ages 5-11 years, who were present but not addressed while their sibling was shown how to construct a novel toy. Each child waited with a distracter toy for her or his turn to make a different toy. Nonaddressed children from Mayan…

Language samples elicited through a picture description task were recorded from 38 adolescents and adults with Williams syndrome (WS) and one control group matched on age, and another matched on age, IQ, and vocabulary knowledge. The samples were coded for use of various types of inferences, dramatic devices, and verbal fillers; acoustic analyses…

Two experiments examined whether text composition engages verbal, visual, and spatial working memory to different degrees. In Experiment 1, undergraduate students composed by longhand a persuasive text while performing a verbal, visual, or spatial concurrent task that was presented visually. In Experiment 2, participants performed a verbal or…

Many students identified with emotional or behavioral disorders have social skill deficits, often displayed as less mature or inappropriate social behavior. Students may have difficulty engaging in appropriate play or social interactions and may at times become aggressive. The inability to interact with others has a negative impact on academic…

Recent psychological and neuropsychological research suggests that executive functions--the cognitive control processes that regulate thought and action--are multifaceted and that different types of executive functions are correlated but separable. The present multivariate twin study of 3 executive functions (inhibiting dominant responses,…

This study draws on sociocultural theory to explore how adult ESL learners interact with either a higher- or a lower-proficiency peer during pair problem solving, and how they each perceive the interactions with their partners. Three ESL learners engaged in a three-stage task: pair writing; pair noticing; and individual writing with two learners,…

This study examined the relative contributions of emotion knowledge and teacher-child relational variables to school competence. Seventy-four economically and ethnically diverse preschoolers (40 boys, 34 girls) completed an emotion knowledge task and a standardized school competence measure. Classroom teachers and their assistants rated the…