Friendship and Popularity in Preschool Classrooms

The development of friendships and peer acceptance and their relation to children's emotional regulation and social-emotional behavior with others among a group of 3-5-year-old children was examined. Peer relationships and social-emotional skills were assessed early in the preschool year and peer relationships were assessed again late in the year. Preschool friendships were prevalent, moderately consistent across situations, and moderately stable over the course of the school year; peer acceptance also was moderately stable. Popularity of preschool children was related to their social behavior with peers both early and late in the school year but acceptance by the group was unrelated to children's emotion regulation. Number of mutual friendship choices was related to children's emotional regulation but not to social behaviors with peers late in the year. Acceptance by the peer group was related to number of mutual friends but there were some well-liked children who had no friends and disliked children who had friends. These results show the importance of popularity and early friendships in preschool classrooms. That is, these peer relationships are lasting and related to social and emotional development. Therefore, efforts to foster both group relations and mutual dyadic relationships should be included in preschool programming.     

Manager communication and workplace trust: Understanding manager and employee perceptions in the e-world

Today's business environment is populated with individuals who are digitally connected to clients, contractors, managers, and employees. Traditionally, the ways and behaviors of managers had developed and thrived within face-to-face work environments, but as computer-mediated technologies continue to change the boundaries of the business community, permit alternative worksites to increase, and the traditional workday to disappear, the role of the manager has changed. This article focuses on the communication behaviors between managers and their employees, and how these behaviors have changed as digital communication methods have become mainstream within organizations today. The variables of interest are manager communication and workplace trust. The intended outcome is to uncover the expectations that have yet to be agreed upon within the manager–employee e-relationship.     

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.     

Effects of integrated video media on student achievement and attitudes in high school chemistry

This study explored the effects of an integrated video media curriculum enhancement on students' achievement and attitudes in a first-year general high school chemistry course within a multiculturally diverse metropolitan school district. Through the use of a treatment-control experimental design, approximately 450 students in Grades 9–12 were sampled on measures of chemistry achievement and attitude over the period of 1 academic year. The results revealed significantly higher achievement scores on standardized measures of achievement as well as on microunit researcher-designed, criterion-referenced quizzes for the treatment students who experienced a general chemistry course enhanced with an integrated use of a structured chemistry video series. Correlation of student achievement with logical thinking ability revealed that students with high levels of logical thinking ability benefited most from the video-enhanced curriculum. Treatment students also scored significantly higher than control students on the chemistry attitude instrument. These results along with qualitative supportive evidence suggest that this integrated video media curriculum intervention can positively affect student chemistry achievement and attitude across ability levels and across a diverse multicultural population. Furthermore, the data suggest that educational science video media in general, and the World of Chemistry video series in particular, are instructional tools that can be used effectively to bring the often abstract, distant worlds of science into close focus and within the personal meaningful realm of each individual student. © 1997 John Wiley & Sons, Inc. J Res Sci Teach 34: 617–631, 1997.     

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.     

The concurrent validity of the peabody individual achievement test and woodcock reading mastery tests among students with mild learning problems

Previous research has revealed moderate to high validity coefficients between the Peabody Individual Achievement Test and the Woodcock Reading Mastery Tests. However, the same research has indicated rather consistently that the latter instrument provides significantly lower means than do several screening tests currently being used in the field. This investigation replicated and extended previous research by comparing the two instruments across three grade clusters in order to determine whether the lower Woodcock scores are equally robust for each level. As in prior research, validity coefficients were moderate to high in magnitude. However, the differences between the means of two instruments were found to decrease in size from earlier to later grades. That is, seven of the eight significantly different means were found to occur in grades 1 through 4. Only one significant difference was found for grades 5 through 8. Discussion sought to explain the results in terms of the representativeness of the Woodcock norms and the novel method that Woodcock used to estimate sample means and standard deviations.     

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.