A compositional effect is when pupil attainment is associated with the characteristics of their peers, over and above their own individual characteristics. Pupils at academically selective schools, for example, tend to out-perform similar-ability pupils who are educated with mixed-ability peers. Previous methodological studies however have shown…

To determine whether teachers, on average, improve in their effectiveness as they gain experience in the teaching profession, this brief summarizes the key findings from a critical review of the relevant research. A renewed look at this research is warranted due to advances in research methods and data systems that match student data with…

There is no shortage of studies that have reported the beneficial effects of extensive reading (ER) on various aspects of second/foreign language acquisition, including reading comprehension, reading speed, and vocabulary development. Anecdote after anecdote shows the effectiveness of ER, and no one seems to repudiate the power of reading in large…

Researchers have become increasingly interested in uncovering how genetic factors work together with the peer environment in influencing development. This article offers an overview of the state of knowledge. It first describes the different types of gene-environment correlations (rGE) and gene-environment interactions (GxE) that are of relevance…

Adolescent drinking represents a significant problem in the United States. Although high school juniors and seniors are particularly vulnerable to the negative consequences associated with alcohol use, evidence-based interventions for this age group are limited. The purpose of this article is to introduce a Web-based alcohol intervention with…

According to a paper released by the National Bureau of Economic Research, first-year college students who are assigned roommates with video-game consoles study 40 minutes less per day, on average, than first-year students whose roommates did not bring consoles. And that reduction in study time has a sizable effect on grades: First-year students…

This article proposes an unusual identification strategy to estimate the effects of disruptive students on peer behavior and academic outcomes. Because boys with names most commonly given to girls may be more prone to misbehavior as they get older, they may become differentially disruptive in school. In elementary school there is no relationship…

The consequences of gender social and learning interactions in the classroom are of interest to parents, policy makers, and researchers. However, little is known about gender peer effects in schools and their operational channels. In this paper, we estimate the effects of classroom gender composition on scholastic achievements of boys and girls in…

Describes an in-class exercise using students' discussion of their answers on a multiple choice test to demonstrate the powerful effects and pervasiveness of social influence. After a brief multiple choice test, students discuss their answers with their neighbors and then answer again. Similar response patterns emerge among the participants. (MJP)