This study investigated the knowledge base necessary for choosing appropriate statistical techniques in applied research. In this study, we compared knowledge used by six experts and six novices in two types of statistical tasks. The tasks were: 1) comparing research scenarios from the perspective of choosing a statistical technique, and 2) direct…

The purpose of this study is to explore elementary students' views of (NOS) to see how well they align with national reform recommendations (AAAS, 1993; NRC, 1996). Using an open-ended questionnaire coupled with one-on-one interviews of fourth-grade students conducted at the end of the school year, the researchers explored students' understandings…

Pharmacological interventions for smoking cessation are typically evaluated using volunteer samples (efficacy trials) but should also be evaluated in population-based trials (effectiveness trials). Nicotine replacement therapy (NRT) alone and in combination with behavioral interventions was evaluated on a population of smokers from a New England…

Purpose: This commentary, written in response to Alan Kamhi's paper, "Treatment Decisions for Children with Speech-Sound Disorders," further considers the "what" or goal selection process of decision making with the aim of efficiency--getting the most change in the shortest time. Method: My comments reflect a focus on the client values piece of…

Purpose: This paper is a personal reaction to Gillam and Gillam's treatise on evidence-based decision making in schools. This evaluation focuses principally on the costs and benefits of clinicians' search for external evidence, potential problems associated with efforts to grade that evidence, and the integration of this evidence with "internal"…

In the debate over evidence-based treatments (EBTs) for youth, one question is central: Do EBTs produce better outcomes than the usual interventions employed in clinical care? The authors addressed this question through a meta-analysis of 32 randomized trials that directly compared EBTs with usual care. EBTs outperformed usual care. Effects fell…

The search for the principles of unified psychotherapy is an important stage in the advancement of the field. Converging evidence from various streams of clinical science allows the identification of some of the major domains of human functioning, adaptation, and dysfunction. These principles, supported by animal modeling, neuroscience, and…

The present study investigates the development of children's ability to make inferences about a peer's mental state. In this study 48 eight-year-old children, 49 ten-year-old children and 44 adults observed and analyzed short video sequences, extracts from a socio-cognitive interaction between two children working on a mathematical task. The…

The inability to write scientific papers effectively remains a problem for many college students. To identify pedagogical constructs that help undergraduates write well in scientific formats, we evaluated the effect of the number and type of college composition courses previously taken, science writing experience, and tutorial services. In our…

In this report we focus on the use of propensity score methodology in multisite studies of the effects of educational programs and practices in which both treatment and control conditions are enacted within each of the schools in a sample, and the assignment to treatment is not random. A key challenge in applying propensity score methodology in…

This study describes a program designed to improve reading comprehension through the selection, application, and transfer of appropriate reading strategies with both fictional and informational texts. The targeted population consisted of seventh and eighth grade middle school students in a middle-class community in the western suburbs of Chicago,…

Peering through a thematic science lens--elementary students embarked on a one-week study of ants during a month-long summer school program. This integrated unit addressed reading and writing skills while developing the science-process skills of observation, inferring, and communicating in a motivating and authentic way. Pre- and post-assessments…

Three meta-analytic studies have shown that bilingual education is an effective method for teaching students who are English language learners. However, there is limited evidence of the effectiveness of bilingual education in preschool. This study used multiple years of data from the Manchester (New Hampshire) Even Start program and relevant…

The author describes her 30 years of experience in the design and conduct of a series of large-scale randomized controlled studies in the field of public welfare. She describes how these studies came about, what lessons can be drawn about research methods, what was learned about the effectiveness of these programs (the National Supported Work…

Objectives: A national survey finds that 62% of social work programs do not require didactic and clinical supervision in any empirically supported psychotherapy (EST). The authors report the results of analysis of national survey data using two alternative classifications of EST to determine if the results are because of the definition of EST used…