Modeling and Motor Performance: A Developmental Perspective

Abstract

The present study was designed to examine the effects of age, modeling and verbal self-instruction on children's performance of a sequential motor task. Eighty-four children between the ages of 4–0 and 5–11 years and 84 children between the ages of 7–0 and 8–11 years were randomly assigned to one of six instructional conditions in a 2 × 3 × 2 (age × model type × verbal self-instruction) factorial design. Results revealed that older children performed better than younger children on motor, verbal-cognitive, and attentional measures. More importantly, an age by model type interaction revealed that model effectiveness depended on the age of the observer as well as the type of model observed. Specifically, 7- and 8-year-old children performed equally well after observing either a silent or verbal model, while the 4- and 5-year-olds performed best under a verbal model only. The absence of verbal self-instructional effects was attributed to task difficulty, information processing capabilities and methodological procedures. In general, the results supported the notion that developmental factors play a critical role in the modeling process, and both theoretical and practical implications are outlined.     

The role of aggression and social competence in children's perceptions of the child–teacher relationship

The role of children's aggression and three indices of social competence (peer‐preferred behavior, teacher‐preferred behavior, and school adjustment) in children's perceived relationships with their teachers was assessed. Participants were 1,432 third through fifth graders (688 males, 744 females) and their teachers. The results from hierarchical regression analyses showed statistically significant interaction effects. Poor school adjustment was associated with more negatively perceived child teacher relationships for boys than for girls. In addition, the perceived child–teacher relationship among aggressive children was more favorable among those with high levels of school adjustment than among those who were poorly adjusted at school. Implications for school psychologists and teachers are discussed. © 2002 John Wiley & Sons, Inc.     

Relative Heights of Males and Females in Children's Drawings Taille Relative des Silhouettes Masculines et Fe´minines dans les Dessins d'Enfants Alturas Relativas de las Figuras Masculina y Femenina en los Dibujos de los Niños

Two studies are reported concerning the height of male and female figures in children's drawings. In Study 1, 5 and 7 year olds were asked to draw a man and a lady or a boy and a girl. Adult figures were drawn taller than child figures. For boys, the mean heights of their male and female figures were approximately the same but girls drew their females taller than their male figures. The reason for this was that more girls than boys used different structures (incorporating a skirt or trousers into the drawing) to differentiate their figures; this use of different structures results in a taller drawing of a skirted figure. This finding was replicated in Study 2 in which 7-year-olds were asked to draw a lady in a skirt and another in pyjamas: the skirted figure was taller when it had a different structure from the figure in pyjamas, whereas the mean heights of both figures were approximately the same height when the same structure had been used. Deux travaux de recherche ont étudié la taille des silhouettes masculines et féminines dans les dessins d'enfants. Dans l'étude 1, des enfants de 5 et 7 ans ont dû dessiner un homme et une femme ou un garçon et une fille. Les silhouettes adultes ont été dessinées plus grandes que les silhouettes d'enfants. Les garçons ont dessiné des silhouettes d'hommes et de femmes à peu près de la même taille en moyenne, mais les filles ont dessiné leurs femmes plus grandes que leurs hommes. La raison en est que plus de filles que de garçons utilisaient des structures différentes (en incorporant une jupe ou un pantalon dans le dessin) pour différencier leurs silhouettes; cette utilisation de structures différentes résulte en un dessin plus haut de la silhouette en jupe. Ces résultats se retrouvent dans l'étude 2, où des enfants de 7 ans ont dû dessiner une dame en jupe et une autre en pyjama: la silhouette en jupe était plus haute quand elle avait une structure différente de celle en pyjama, tandis que la hauteur moyenne des deux silhouettes était à peu près la même quand la même structure était utilisée. Se informa de dos estudios relacionados con la altura de las figuras masculina y femenina en los dibujos de los niños. En el Estudio 1, se pidió a niños de 5 y 7 años que dibujan un hombre y una mujer, o un chico y una chica. Las figuras adultas fueron dibujadas con una altura mayor que las figuras de niños. Para los niños, las alturas medias de sus figuras masculinas y femeninas fueron aproximadamente las mismas, pero las niñas dibujaron sus figuras femeninas más altas que las masculinas. La razón para esto fue que más niñas que niños usaron estructuras diferentes (incorporando una falda o pantalones en el dibujo) para diferenciar sus figuras. El uso de estas estructuras diferentes resulta en un dibujo más alto de una figura con falda. Este hallazgo se reprodujo en el Estudio 2, en el que se pidió a niños de 7 años que dibujaran una señora con una falda y otra con un pijama: la figura con falda fue más alta cuando tuvo una estructura diferente a la de la figura con pijama, mientras que las alturas medias de ambas figuras fueron aproximadamente la misma altura cuando la hizo uso de la misma estructura.     

Managing the consultant and the client: A two-handled crosscut saw

This article focuses on managing the client and the concultant with a performance appraisal process. The authors use their current practical experiences to consider the management of an effective client-consultant relationship. Dorothy writes from her perspective as a training director and user consultants and Maureen from her experience as an independent consultant providing management training and consulting services in the Metropolitan Washington area.     

Parents Influence the Visual Learning Environment Through Children's Manual Actions

The present research studied children in the second year of life (N = 29, M_age = 21.14 months, SD = 2.64 months) using experimental manipulations within and between subjects to show that responsive parental influence helps children have more frequent sustained object holds with fewer switches between objects compared to when parents are either not involved or over-involved. Regardless of parental involvement, sustained holds were visually rich, based on the size, centeredness, and dominance of the held object relative to other objects. These findings are important because they suggest not only that the child's body creates visually rich scenes across play contexts but also that a responsive parent can increase the frequency of these visually rich and informative moments.     

Engaging Experts: Science-Policy Interactions and the Introduction of Congestion Charging in Stockholm

This article analyzes the conditions for mobilizing the science base for development of public policy. It does so by focusing upon the science-policy interface, specifically the processes of direct interaction between scientists and scientifically trained experts, on the one hand, and agents of policymaking organizations, on the other. The article defines two dimensions – cognitive distance and expert autonomy – which are argued to influence knowledge exchange, in such a way as to shape the outcome. A case study on the implementation of congestion charges in Stockholm, Sweden, illustrates how the proposed framework pinpoints three central issues for understanding these processes: (1) Differentiating the roles of, e.g., a science-based consultancy firm and an academic environment in policy formation; (2) Examining the fit between the organizational form of the science-policy interface and the intended goals; and (3) Increasing our understanding of when policymaker agents themselves need to develop scientific competence in order to interact effectively with scientific experts.     

‘What can I do to help?’: Postsecondary students with learning disabilities' perceptions of instructors' classroom accommodations

This qualitative research report adopts a critical pedagogy perspective to examine the provision of classroom accommodations for postsecondary students with learning disabilities. Although instructors in the United States are bound to abide by disability rights laws, we also believe instructors can act in ways that allow students to feel comfortable in disclosing their disabilities and in requesting and accessing accommodations for these disabilities. We engaged the voices of 10 university students living with learning disabilities through a series of semi‐structured interviews. These students offered a variety of statements on the ways that their disabilities were accommodated or not by their instructors. We classified these perceptions into three kinds of accommodation perceived by university students with learning disabilities: non‐accommodation, formal accommodation and accommodation for all students. We discuss the implications that these types of accommodations have for pedagogy and offer recommendations for effective techniques for accommodating for all. We hope the voices of these students will serve to enhance communication between students with learning disabilities and their professors.     

Peak oxygen uptake measured during a perceptually-regulated exercise test is reliable in community-based manual wheelchair users

This study compares test-retest reliability and peak exercise responses from ramp-incremented (RAMP) and maximal perceptually-regulated (PRET_max) exercise tests during arm crank exercise in individuals reliant on manual wheelchair propulsion (MWP). Ten untrained participants completed four trials over 2-weeks (two RAMP (0–40 W + 5–10 W · min^?1) trials and two PRET_max. PRET_max consisted of five, 2-min stages performed at Ratings of Perceived Exertion (RPE) 11, 13, 15, 17 and 20). Participants freely changed the power output to match the required RPE. Gas exchange variables, heart rate, power output, RPE and affect were determined throughout trials. The V?O_2peak from RAMP (14.8 ± 5.5 ml · kg^?1 · min^?1) and PRET_max (13.9 ± 5.2 ml · kg^?1 · min^?1) trials were not different (P = 0.08). Measurement error was 1.7 and 2.2 ml · kg^?1 · min^?1 and coefficient of variation 5.9% and 8.1% for measuring V?O_2peak from RAMP and PRET_max, respectively. Affect was more positive at RPE 13 (P = 0.02), 15 (P = 0.01) and 17 (P = 0.01) during PRET_max. Findings suggest that PRET_max can be used to measure V?O_2peak in participants reliant on MWP and leads to a more positive affective response compared to RAMP.