Effects of modeling and videotape feedback with knowledge of results on motor performance

On the basis of social learning theory it can be hypothesized that information acquired through model observation can provide as rich a basis for a cognitive representation as that acquired by means of the usual KR procedure. A source of external information similar to that of model observation is videotape feedback (VTFB). Therefore, it was the purpose of this study to test the potency of these two sources of information with KR. The design was a 4 (groups) × 10 (blocks) factorial ANOVA with repeated measures on the last factor. Both immediate transfer and 48-hr retention effects were assessed. The immediate transfer analysis indicated a significant main effect for group. This effect appeared to be due to the poor performance of the VTFB group. The same effect approached significance after the 48-hr retention. Subsequent variance analysis indicated significant differences between transfer and retention within all conditions except modeling.     

Cognitive engagement variations among students of different ability level and sex in a computer problem solving game

The study investigated the cognitive engagement processes used by more and less successful learners in a computer problem solving game. These engagement variations were also related to sex and ability differences among students. Performance and engagement were monitored interactively as students learned a computer problem solving game; student comments and notes were also recorded. Results showed the records of more and less successful students to be distinguished by the spontaneous use of self-regulated learning processes — a sophisticated form of cognitive engagement. More successful students also appeared to shift cognitive engagement levels in response to computer game feedback. Success on the computer task and cognitive engagement variations were correlated with student differences in both ability and sex in this sample.This study was funded by the National Institute of Education, Grant No. 400-83-0017. Opinions, findings, conclusions, and recommendations expressed in this study do not necessarily reflect the views of the National Institute of Education. The authors wish to thank Marcia Linn and Charles Fisher for their helpful advice, and Susanne Lajoie who served as second rater. Mary Rohrkemper and the Education and Child Development doctoral students at Bryn Mawr College also provided critical suggestions.     

Simple and complex mental addition across development

Students in Grades 1, 4, 7, and 10 were timed as they solved simple and complex addition problems, then were presented similar problems in an untimed interview. A manipulation of confusion between addition and multiplication, in which multiplication answers were given to addition problems (3 + 4 = 12), revealed evidence for the hypothesized interrelatedness of these operations in memory only in 10th graders. The overall pattern of results suggests a strong reliance on memory retrieval, even in the first-grade group, with discernible time differences when “procedural” knowledge of carrying is required for problem solution. The results were judged consistent with a fact retrieval model which invokes explicit procedural information when problem difficulty is high or when processes like carrying and estimating magnitudes are required. In agreement with several other reports, the overall slowing of performance to larger problems is best explained in terms of normatively defined problem difficulty or associative strength in memory.     

Semantic integration: Effects of imagery,enaction, and sentence repetition training on prereaders' recall for pictograph sentences

This study examines the effectiveness of an integrative imagery strategy in contrast to more concrete enaction and repetition strategies for improving kindergarten children's recall of pictograph sentences. The training groups were taught in two brief sessions to read the pictograph sequences as sentences and then to imagine the sentence's action (sentence imagery), act out the sentence using toys (sentence enaction), or repeat each sentence twice (sentence repetition). After training, the enaction group significantly outperformed the imagery and sentence repetition groups, which outperformed a repetition control group. Two weeks later, the imagery and enaction groups no longer differed significantly in recall and both groups significantly outperformed the repetition control group. The imagery group alone significantly outperformed the repetition control group on a no-toys generalization test. Implications of the results concerning strategy training of young children, the effectiveness of imagery strategies, and experimental design are discussed.     

STAR: A unique embedded performance assessment technique

STAR (The Strategic and Tactical Assessment Record) is a versatile research tool designed to evaluate the effects of sustained performance and other stressors on integrated, complex cognitive functioning. This completely automated task is presented in the form of a highly motivating computer game. However, unlike typical computer games, successful performance of STAR depends on an individual’s ability to rapidly and accurately assess risk/benefit ratios in a variety of situations, and on the skilled use of an array of multipurpose control systems. STAR is unique in that approximately 80 performance measures are unobtrusively embedded in the operations required to “play the game”; no obvious performance assessment interferes with task presentation. STAR provides multiple measures of psychomotor function, attention, memory, information processing, decision making, risk-taking behavior, subjective state, errors, and error paths. In this report, we describe STAR, and summarize two preliminary experiments designed to separately evaluate the effects of task difficulty and task stress level on complex performance.     

Using synthetic speech for remote access to information

The availability of unlimited text-to-speech synthesis systems provides the potential for remote access to databases over existing telephone systems. This paper describes some of the intelligibility and user interface problems associated with such applications and reports work aimed at understanding and solving these problems. In particular, it describes an approach to intelligibility problems based on the understanding and manipulation of listeners’ adaptation to synthetic speech, and user interface work examining use of a simulated travel information system.     

Rethinking Economic Inequality

Secular discourse about problem of economic inequality rests on two foundational premises that are problematic from a theological point of view. First, individuals enter into society with the aim of bettering their own condition. Second, bettering one's own condition entails accruing more wealth and power so that one can fulfill more of one's desires. In this paper I argue that insofar as these premises shape market behavior, they actively promote excessive economic inequality. Ethical responses to the problem of economic inequality that do not challenge these assumptions are unlikely to effectively promote justice. A theological response to the problem of economic inequality should work to promote cultural change by reminding us that genuine human flourishing depends on communal ties and the higher human goods that material wealth is properly meant to support.     

Beyond Dyadic Coordination: Multimodal Behavioral Irregularity in Triads Predicts Facets of Collaborative Problem Solving

We hypothesize that effective collaboration is facilitated when individuals and environmental components form a synergy where they work together and regulate one another to produce stable patterns of behavior, or regularity, as well as adaptively reorganize to form new behaviors, or irregularity. We tested this hypothesis in a study with 32 triads who collaboratively solved a challenging visual computer programming task for 20 min following an introductory warm‐up phase. Multidimensional recurrence quantification analysis was used to examine fine‐grained (i.e., every 10 s) collective patterns of regularity across team members' speech rate, body movement, and team interaction with the shared user interface. We found that teams exhibited significant patterns of regularity as compared to shuffled baselines, but there were no systematic trends in regularity across time. We also found that periods of regularity were associated with a reduction in overall behavior. Notably, the production of irregular behavior predicted expert‐coded metrics of collaborative activity, such as teams' ability to construct shared knowledge and effectively negotiate and coordinate execution of solutions, net of overall behavioral production and behavioral self‐similarity. Our findings support the theory that groups can interact to form interpersonal synergies and indicate that information about system‐level dynamics is a viable way to understand and predict effective collaborative processes.