Evolution is commonly taught as a slow process that changes gene frequencies over long time periods. These genotypes are changed through natural selection on phenotypes with the fittest individuals spreading more genes into the environment than less-fit phenotypes. What is now well known to science, but still under-emphasized in textbooks and…

N = 1 designs imply repeated registrations of the behaviour of the same experimental unit and the measurements obtained are often few due to time limitations, while they are also likely to be sequentially dependent. The analytical techniques needed to enhance statistical and clinical decision making have to deal with these problems. Different…

Research indicates that increasing teacher-directed opportunities to respond (TD-OTR) positively impacts student outcomes. Prior reviews of the empirical literature focused on outcomes for students with emotional behavioral disorders or on TD-OTRs as one of many classroom-management practices; however, prior reviews did not examine effects of…

Targeting students in grades K-8, Art in Action's program consists of 12 age-appropriate lessons per year led by parent and teacher volunteers. The curriculum is based on historically significant artists and their works of art. Through semi-structured discussions, students examine a variety of masterpieces, learning about the artist as well as…

The main objectives of the study were: to investigate whether training on working memory (WM) could improve fluid intelligence, and to investigate the effects WM training had on neuroelectric (electroencephalography--EEG) and hemodynamic (near-infrared spectroscopy--NIRS) patterns of brain activity. In a parallel group experimental design,…

Purpose: The purpose of the paper is to present evidence on the impact of enterprise education on young people still at school in London, UK. The study was designed to measure the effect of participation in a Young Enterprise (YE) Company Program on young people's attitudes toward starting a business, and on their enterprise potential.…

Background: Extra-curricular sport is an important aspect of life in Irish primary schools. Team invasion games hold a dominant position and, within this category, Gaelic games are extremely popular. Teachers have, historically, played a significant role in the promotion of Gaelic games through the organization of inter-school competitions. The…

The purpose of this study is to describe an alternative means of estimating school effectiveness, referred to as an "absolute year" of schooling and demonstrate its usefulness as a measure of school effectiveness in the middle grades. More specifically, the study investigated (a) whether the absolute schooling effect in math and reading outcomes…

Research apprenticeships for secondary students provide authentic contexts for learning science in which students engage in scientific investigations with practicing scientists in working laboratory groups. Student experiences in these research apprenticeships vary depending on the individual nature of the laboratory in which students have been…

Field trips to science museums can provide students with educational experiences, particularly when museum programs emphasize scientific inquiry skill building over content knowledge acquisition. We describe the creation and study of 2 programs designed to significantly enhance students' inquiry skills at any interactive science museum exhibit…

Objective: Examine the influence of altering the size of snack food (ie, small vs large cookies) on short-term energy intake. Methods: First- and sixth-graders (n = 77) participated in a between-subjects experimental design. All participants were offered the same gram weight of cookies during an afternoon tea at their school. For half of the…

Attrition occurs when study participants who were assigned to the treatment and control conditions do not provide outcome data and thus do not contribute to the estimation of the treatment effects. It is very common in experimental studies in education as illustrated, for instance, in a meta-analysis studying "the effects of attrition on baseline…

In this paper the authors extend recent work on mediation in a multilevel setting and on causal inference under interference among units to develop a template for the mediation analysis of group randomized educational interventions. The present work will contribute to the literature on interference, in particular on interference in the context of…

A randomized posttest-only control group experimental design was used to determine the effects of regulatory self-questioning on secondary-level career and technical education students' electrical circuit theory test scores. Students who participated in the self-questioning group were asked to answer a list of regulatory questions as they solved…

Default options exert an influence in areas as varied as retirement program design, organ donation policy, and consumer choice. Past research has offered potential reasons why no-action defaults matter: (a) effort, (b) implied endorsement, and (c) reference dependence. The first two of these explanations have been experimentally demonstrated, but…