The spatial constraint in intersensory pairing: no role in temporal ventriloquism

A sound presented in temporal proximity to a light can alter the perceived temporal occurrence of that light (temporal ventriloquism). The authors explored whether spatial discordance between the sound and light affects this phenomenon. Participants made temporal order judgments about which of 2 lights appeared first, while they heard sounds before the 1st and after the 2nd light. Sensitivity was higher (i.e., a lower just noticeable difference) when the sound-light interval was approximately 100 ms rather than approximately 0 ms. This temporal ventriloquist effect was unaffected by whether sounds came from the same or a different position as the lights, whether the sounds were static or moved, or whether they came from the same or opposite sides of fixation. Yet, discordant sounds interfered with speeded visual discrimination. These results challenge the view that intersensory interactions in general require spatial correspondence between the stimuli.     

Stability in cognition across early childhood. A developmental cascade

Children confront the formidable task of assimilating information in the environment and accommodating their cognitive structures to that information. Developmental science is concerned equally with two distinctive features of these processes: children's group mean level of performance through time and the standing of individual children through time. Prevailing opinion since the inception of the mental-measurement movement has been that individual development is unstable-that individual children change unpredictably in their abilities. We report results of a large-scale controlled, multivariate, prospective, microgenetic, 4-year longitudinal study that reveals a statistically significant cascade of species-typical cognitive abilities from infancy to childhood. Infancy is a recognizable starting point of life; we find that to a small but significant degree, infancy also represents a setting point in the life of the individual.     

Investing in Success: Key Strategies for Building Quality in After-School Programs

This paper examines the relation between the implementation quality of after-school literacy activities and student reading gains. The data are from an evaluation of a multi-site after-school program in California in which continuous program quality improvement strategies were implemented to improve the delivery of a new balanced literacy program. Strategies included: (1) targeted staff training throughout the year, (2) regular observations and coaching of staff, and (3) the use of data to measure progress. Programs struggled to successfully implement these strategies early in the initiative, but gradually improved the quality and consistency of their use. Program quality, as measured through observations, also increased. Results suggested that the size of student reading gains were positively correlated with the quality of literacy programming provided by each instructor.     

Complexity factors in visuo‐spatial working memory

Three experiments are presented that use a technique of selective interference—irrelevant pictures—to develop our understanding of visuo‐spatial working memory. Visual noise fields are used as the irrelevant pictures. Using two related measures of simple visual complexity, the experiments demonstrate that the greater the complexity the greater the degree of interference, even within a paradigm where subjects are instructed to look at but otherwise ignore the irrelevant pictures. Both the number of dots and the density of the dots comprising the visual noise fields affect the degree of interference in a concurrent memory task. In addition, increasing the size of the field increases the amount of interference. It is argued that the results give insight into the properties of visual working memory and contribute to its theoretical development. For example, it is argued that the store is directly accessible by externally presented interference and that particular aspects of the noise displays cause interference with visual memory.     

Very Long-term Recall in Infants: Infantile Amnesia Reconsidered

Abstract

Subjects who had participated in a study on non-verbal recall before their first birthday returned to the laboratory one year later and were tested for recall of their previous visit. During their previous visit they had shown recall of both familiar and novel actions on a set of novel objects. However, after a year's delay, evidence for recall was found for the familiar actions only. One action in particular was responsible for this finding: feeding a teddy bear with a schematic bottle. The majority of the returning subjects who had been shown this action repeated it after a year, whereas none of the other returning subjects and few of the subjects in the control groups performed this action. The results indicate that young infants have the ability to recall an event both at 11 months of age and after a delay as long as one year. The finding that infants can recall during a period that later becomes inaccessible to memory is important to our understanding of infantile amnesia.     

The Attentional Focus of Expert Golfers in Training and Competition: A Naturalistic Investigation

This study explored the attentional focus of expert golfers using a naturalistic approach. Eight male professional golfers were filmed in two contexts (training and competition). Self-confrontation interviews based on the video were conducted immediately afterwards. Qualitative data analyses showed that golfers used various attentional foci. Foci were classified according to their content and their characteristics. Golfers adapted their attentional foci to the context. They used sequences of attentional foci and moved from one attentional focus to another when they prepared, executed, or evaluated their shot. Future research on attentional focus of expert athletes should study the phenomenon over time.     

The Developmental Activities of Elite Ice Hockey Players

The purpose of this study was to analyze the development of four 20 year-old elite hockey players through an in-depth examination of their sporting activities. The theoretical frameworkof deliberate practice (Ericsson, Krampe, & Tesch-Romer, 1993) and the notion of deliberate play (Côté, 1999) served as the theoretical foundations. Interviews were conducted to providea longitudinal and detailed account of each participant.s involvement in various sporting activities. The interviewer asked questions about the conditions and sporting activities for eachyear of development. The data obtained were validated through independent interviews conducted with three parents of three different athletes. The results were consistent with Côté.s(1999) three stages of development in sport: the sampling (age 6.12), specializing (age 13. 15), and investment (age 16+) years.     

Adaptation in Visuomanual Tracking Depends on Intact Proprioception

The role of arm proprioception in motor learning was investigated in experiments in which, by moving the arm, subjects followed the motion of a target displayed on a monitor screen. Adaptive capabilities were tested in visuomanual tracking tasks following alterations in the relationship between the observer's actual arm movement and visual feedback of the arm movement given by a cursor motion on the screen. Tracking performance and adaptive changes, measured in terms of spatiotemporal error, tracking trajectory curvature, and spatial gain, were compared in 7 control subjects (CSs) and in 1 deafferented subject (DS). CSs adapted appropriately to altered visuomanual relationships; those changes were present in trials immediately after restoration of normal scaling. In contrast, although the DS modified his tracking strategy from trial to trial according to the altered conditions, he did not show plastic changes in internal visuomanual scaling. Like the results of prismatic adaptation experiments, the present results suggest that arm proprioception contributes to the plastic changes that follow alterations in the scaling of visuomanual gain.     

A Note on Modulations and Structuring of Locomotion in Children and Adults

The aim of this study was to investigate the modulations of locomotion induced by a rhythmic cognitive task (counting one’s steps). Subjects (6-and 8-year-olds and adults) were requested to walk freely, and then to walk while counting their steps. Here a decrease in cadence values was observed in children only, with quasi-total repercussions on velocity at the age of 6 only. The spatiotemporal structuring of locomotion described here is already present at 6 years of age and is not altered in the step-counting situation: strong links were observed between cadence and velocity, and between stride length and velocity, and weak links between cadence and stride length.     

Development of the Bias in Attitudes Survey: A Sex-Role Questionnaire

Empirical research into sex bias continues to grow at the same time that societal attitudes are changing. For this reason, broader and more sensitive measuring tools are necessary. The present study describes the development of such an instrument, the Bias in Attitudes Survey, a female/male role questionnaire. The BIAS was developed from the responses of 354 male and female college students to a 89-item tryout draft. Thirty-five items were retained, yielding a reliability estimate of.91. Scores across gender, age, and marital status are discussed, as well as implications and applications for further study.