Time series analysis of knowledge of results effects during motor skill acquisition

Time series analysis was used to investigate the hypothesis that during acquisition of a motor skill, knowledge of results (KR) information is used to generate a stable internal referent about which response errors are randomly distributed. Sixteen subjects completed 50 acquisition trials of each of three movements whose spatial-temporal characteristics differed. Acquisition trials were either blocked, with each movement being presented in series, or randomized, with the presentation of movements occurring in random order. Analysis of movement time data indicated the contextual interference effect reported in previous studies was replicated in the present experiment. Time series analysis of the acquisition trial data revealed the majority of individual subject response patterns during blocked trials were best described by a model with a temporarily stationary, internal reference of the criterion and systematic, trial-to-trial variation of response errors. During random trial conditions, response patterns were usually best described by a "White-noise" model. This model predicts a permanently stationary, internal reference associated with randomly distributed response errors that are unaffected by KR information. These results are not consistent with previous work using time series analysis to describe motor behavior (Spray & Newell, 1986).     

Gandhian education in Bali: globalisations and cultural diversity in a time of fundamentalisms

The paper presents findings from a research project undertaken at the Taman Rama Gandhi School in Bali during the first anniversary week of the Bali Bombings in 2003. It explores the school's response to four key components of Gandhi's model of Basic Education (Nai Talim) and shows that the claimed curriculum is framed by two contradictory discourses: a globalisation from above discourse and a Gandhian discourse of tolerance and peace, more consistent with a globalisation from below discourse. The argument is made that the curriculum's commitment to the neo‐liberal capitalist values of the globalisation form above discourse may ultimately thwart the emphasis upon peace and tolerance in the discourse from below.     

Individual differences in word recognition acquisition: A path from an interactive model of reading to an interactive instructional setting

The present research attempts to demonstrate that it is possible and instructive to combine classroom observational procedures with theoretically guided reading concepts. It explores the application of an interactive processing model to classroom word recognition acquisition, in a longitudinal case-study design. Five first graders were observed four times in an instructional setting where they had to search for words in a reference text. From the various behaviors observed, it was possible to infer five differents types of searching strategies: Context-oriented; Code-oriented; Unmediated; Copying; Passive. The results show a great inter- and intra-individual variability in the use of the different types of strategies. In particuliar, there are different patterns of occurrence of the code-oriented and context-oriented strategies (simultaneous versus alternate). The results also show that word by word planning of the search was difficult for very beginning readers.     

A large-scale test of the relationship between procrastination and performance using learning analytics

Abstract

Many studies have found a relationship between students’ self-reported procrastination and their grades. Few studies have used learning analytic data as a behavioural measure of procrastination in order to predict performance, and there is no systematic research on how this relationship may differ across assessments or disciplines. In this study we analyse nine years’ worth of institutional electronic submission records, a total of 73,608 assignment submissions, to examine the relationship between submission time and grades across assignments, students, courses, and disciplines in higher education. A significant negative relationship was found overall, with students who submitted closer to the deadline obtaining lower grades, however the size of the relationship was negligible, accounting for less than 1% of the variance in grades. The relationship varied significantly depending on student, assignment, course and discipline.     

Angle and rotation: Effects of different types of feedback on the quality of response

The study compares the levels of response to angle/rotation problems presented on screen with a Logo microworld with the levels of response to similar problems presented on paper. Pairs of children aged from 9 to 11 who had little or no experience of Logo completed the problems in about 40 minutes. Pairs of children completed the problems over a period of eight weeks. The responses, classified using the SOLO taxonomy (Structure of Observed Learning Outcomes), suggested that the effect of the immediate feedback of the screen turtle heading was to inhibit moves to a higher level of response compared to those levels of response reached when responding to paper tests.     

Curious sex ratios and cytoplasmic genes

Evolutionary theory predicts that most populations should consist of roughly as many males as females. Recently, a variety of populations have been described which show very different proportions of the two sexes, especially in invertebrate species that contain individuals whose offspring are almost all female. Some of these instances can now be explained by the diverse actions of various ‘selfish’ elements residing in the cytoplasm of the individuals, which are transmitted exclusively through the female line. These instances of curious sex ratios exemplify an important principle: the fitness of genes, rather than of individuals, is the primary currency of evolution.