Developing indicators of classroom practice to evaluate the impact of district mathematics reform initiative: A generalizability analysis

This paper reported results from a generalizability study that examined the process of developing classroom practice indicators used to evaluate the impact of a school district's mathematics reform initiative. The study utilized classroom observational data from 32 second, fourth, eighth, and tenth grade teachers. The study addresses important measurement issues in developing classroom practice indicators used as evaluation outcome measures. This study also demonstrates that the G-theory measurement framework has important applications in practice-oriented settings. Namely, the use of G-theory provides insights into the tradeoffs between number of observations and number of raters when using observational data to conduct evaluation. The use of decision analysis provided a procedure for forecasting the optimum mix of the two for each situation.     

Learning-related behaviors and literacy achievement in elementary school-aged children

This longitudinal study investigated associations between children's learning-related behaviors and literacy achievement in an ethnically diverse sample of low-income children throughout elementary school. Children's literacy and learning-related behavior (e.g., working independently, seeking challenges) were assessed when they were in kindergarten or first grade and again in the third and fifth grades. The results showed fair consistency over time in both learning-related behaviors and literacy skills. Learning-related behaviors in one grade predicted literacy achievement in the subsequent grade in which it was assessed, but literacy skills did not predict subsequent learning-related behaviors.     

Threats to the professional understanding of assessment error

A case study investigation was undertaken to identify threats to the professional understanding of assessment error which arise from accounts presented within the education press. Through a predominantly qualitative analysis of articles published in a leading education newspaper, during 2002 and 2003, it explored how assessment agencies in England were represented as responding to allegations of error. A number of threats to professional understanding were identified; in particular, the overarching threat that media reports may help to construct, and to maintain, a mythical image of assessment as a process which can and ought to be free from both measurement inaccuracy and human error. The results highlighted an underlying tension between the need to increase public understanding (of assessment error) and the need to retain public confidence (in our assessment systems). It was concluded that assessment agencies need to develop approaches to enhancing the public and professional understanding of assessment error, to counteract potentially misleading images from media reports.     

Physical activity among Spanish adolescents: relationship with their relatives' physical activity - the AVENA study

Identifying factors related to physical activity levels in young people is important for a more efficient health promotion. The aims of this study were to assess physical activity levels in a national sample of urban Spanish adolescents, and to examine the association between significant others' physical activity (father, mother, brother, sister, and close friends) and that of the adolescents. The present study comprised 2260 adolescents (1157 boys, 1103 girls) aged 13.0-18.5 years participating in the AVENA Study. Both the adolescents' physical activity and that of their relatives and close friends was assessed by questionnaire. The odds of being active were higher in boys than girls (odds ratio?=?2.79, 95% confidence interval?=?2.34-3.33) and tended to decrease across age groups in both boys and girls. Father's and older brother's physical activity was associated with boys' physical activity, while that of any significant other was associated with girls' physical activity. When both parents reported being active, boys had nearly two times higher odds of being active and girls had nearly three times higher odds of being active. The physical activity levels of Spanish adolescents are in line with those previously reported. Physical activity levels in girls are strongly related to the physical activity of any significant other, whereas physical activity levels in boys are only related to their male relatives' physical activity.     

How Promotional Content Changes Ratings: The Impact of Appeals, Humor, and Presentation

This study assessed the impact of content--as opposed to structural--factors on television program ratings, seeking to locate clusters of components that would identify effective on-air promotion and allocate content a better-defined place within theoretic models of media priming. Stepwise multiple regression analyses of 1,547 on-air promos for 155 prime-time programs demonstrated that 5-9% of ratings variance was accounted for by content appeals, humor, and presentation in promos for comedy programs. The influence of content variables was greater for familiar than unfamiliar comedies, and humor and presentation in promos contributed to variance in ratings for mid-rated but not high- or low-rated comedies.     

Analyzing the teaching of advanced mathematics courses via the enacted example space

Examples are believed to be very important in developing conceptual understanding of mathematical ideas, useful both in mathematics research and instruction (Bills & Watson in Educational Studies in Mathematics 69:77–79, 2008; Mason & Watson, 2008; Bills & Tall, 1998; Tall & Vinner, 1981). In this study, we draw on the concept of an example space (Mason & Watson, 2008) and variation theory (Runesson in Scandinavian Journal of Educational Research 50:397–410, 2006) to create a lens to study how examples are used for pedagogical purposes in undergraduate proof-based instruction. We adapted the construct of an example space and extended its application to the constructs of example neighborhood, methods of example construction, and the functions of examples. We explained how to use our new lens to analyze the collection of examples and non-examples that the students had access to. We then demonstrate our method by analyzing the collection of examples and non-examples of a mathematical group the professor of an abstract algebra class presented during lectures or assigned to students in problem sets or exams.