Red shirt colour is associated with long-term team success in English football

The colour of sportswear has been shown to influence the outcome of bouts for several different combat sports. The generality of these effects, and whether they extend to collaborative forms of contests (team sports), is uncertain. Since 1947, English football teams wearing red shirts have been champions more often than expected on the basis of the proportion of clubs playing in red. To investigate whether this indicates an enhancement of long-term performance in red-wearing teams, we analysed the relative league positions of teams wearing different hues. Across all league divisions, red teams had the best home record, with significant differences in both percentage of maximum points achieved and mean position in the home league table. The effects were not due simply to a difference between teams playing in a colour and those playing in a predominantly white uniform, as the latter performed better than teams in yellow hues. No significant differences were found for performance in matches away from home, when teams commonly do not wear their "home" colours. A matched-pairs analysis of red and non-red wearing teams in eight English cities shows significantly better performance of red teams over a 55-year period. These effects on long-term success have consequences for colour selection in team sports, confirm that wearing red enhances performance in a variety of competitive contexts, and provide further impetus for studies of the mechanisms underlying these effects.     

How persistent and general is the contextual interference effect?

The persistence and generality of the contextual interference (CI) effect was tested using a rapid sequential aiming task. Participants (N=48) practiced three movement patterns for three blocks of 18 trials under a blocked (BL) or random (RA) schedule. Movement patterns were displayed and KR provided throughout practice and testing. A 24-hr delayed knowledge of results (KR) retention test included three blocks of 18 trials, followed by a transfer test of a single new movement pattern. In contradiction of the CI effect, RA practice provided an advantage for RA retention only, not BL retention. Furthermore, group differences at transfer were not persistent. Hence, RA practice does not necessarily provide enhanced, context-free learning, but it is essential training for task switching. Overall the findings reveal limited persistence and generality of the CI effect.     

The impact of salary differentials on teacher shortages and turnover: The case of mathematics and science teachers

One of the major focuses of the recent reform movement in education concerns perceived and anticipated teacher shortages, especially in particular fields such as mathematics and science. It is widely believed that lower salaries relative to alternative occupations are responsible for teacher shortages and that higher salaries will therefore help reduce shortages. Yet there is little empirical research that examines the relationship between teacher shortages and teacher salary differentials. This paper examines this relationship for the case of mathematics and science teachers using data on a sample of medium and large school districts located within large metropolitan areas throughout the United States. The results support the general proposition that salary differentials between teachers and alternative occupations influence teacher shortages, although the relationship varies by gender and geographic area of the U.S.     

Training science teachers to utilize better teaching strategies: A research synthesis

This study is a synthesis of practice and research related to the use of behavior analysis to train science teachers. An idealized model (derived from practice) for training science teachers is presented first. Then research related to the categories of the model is reviewed and synthesized. To do this, all available studies on the topic were classified by the type of treatment used to influence the teaching behaviors. The results were meta-analyzed. The effectiveness of training procedures fell into the following order, from lowest to highest: (1) study of an analysis system and self analysis; (2) observing models; (3) analyzing models; and, (4) practice and analysis with feedback. Science educators are encouraged to use the procedures outlined in the model to train better teachers. These results support the idealized model.     

Behind the Scenes of an Intervention Research Study

This article is intended to supplement a published research report ( Gersten, Baker, Smith‐Johnson, Dimino, & Peterson, in press ) on an instructional intervention study by discussing some of the behind‐the‐scenes issues that typically do not appear in a published research report. In particular, I discuss how use of design experiments helped shape the intervention, the interaction between research questions and research design, and the role of intuition in designing and refining experimental studies of instruction.     

Early identification and interventions for students with mathematics difficulties

This article highlights key findings from the small body of research on mathematics difficulties (MD) relevant to early identification and early intervention. The research demonstrates that (a) for many children, mathematics difficulties are not stable over time; (b) the presence of reading difficulties seems related to slower progress in many aspects of mathematics; (c) almost all students with MD demonstrate problems with accurate and automatic retrieval of basic arithmetic combinations, such as 6 + 3. The following measures appear to be valid and reliable indicators of potential MD in kindergartners: (a) magnitude comparison (i.e., knowing which digit in a pair is larger), (b) sophistication of counting strategies, (c) fluent identification of numbers, and (d) working memory (as evidenced by reverse digit span). These are discussed in terms of the components of number sense. Implications for early intervention strategies are explored.