Fractions are foundational for success in algebra and STEM, but they are notoriously difficult for students. In past work, two separate branches of research from psychology and math education have studied fractions knowledge using different, isolated approaches. In this dissertation, I synthesize research from both fields about proportional…

This mixed methods study provides empirical evidence that applying the concept of positive psychology into classrooms enhanced students' academic and behavioral performance in an urban elementary school. In the First Phase, I analyzed the 3rd grade math scores in both positive psychology and traditional classrooms. The results showed that the…

This article combines theory on comics, narrative, and discursive psychology and analyses how the gutter is co-constructed for storytelling in classroom interaction. Closure of the gutter has previously been treated as a cognitive aspect. Here, interactional video data are analysed, with participants organizing ten separate comic panels. The…

Research Findings: In 2 experiments, we tested whether children generalize psychological and biological properties to novel foods. We used an induction task in which a property (either biological or psychological) was associated with a target food. Children were then asked whether a taxonomically related and a script-related food would also have…

Youth's friendships serve important functions in development; however, internalizing symptoms may undermine these relationships. Two studies are presented that examine the association of depressive and anxiety symptoms with friendship adjustment. Study 1 tested concurrent effects and Study 2 tested prospective effects over 6 months. Like past…

In this study, evaluation of direct behavior rating (DBR) occurred with regard to two primary areas: (a) accuracy of ratings with varied instrumentation (anchoring: proportional or absolute) and procedures (observation length: 5 min, 10 min, or 20 min) and (b) one-week test-retest reliability. Participants viewed video clips of a typical third…

While many would agree that music affects us, details of the effects of music on intellectual, psychological, physiological, social, and physical processes of humans are not common knowledge. Recent studies have shown that the use of music can enhance or detract from the completion of many tasks, including eating, sleeping, exercising, driving,…

Advances in statistics provide new methods for analyzing practice data. These advances include person-centered methods (PCMs) that identify subgroups of research participants with similar characteristics. PCMs derive from a frame of reference that is similar to the risk factor perspective in practice. In practice, the delivery of services is often…

Advances in statistics provide new methods for analyzing practice data. These advances include person-centered methods (PCMs) that identify subgroups of research participants with similar characteristics. PCMs derive from a frame of reference that is similar to the risk factor perspective in practice. In practice, the delivery of services is often…

Classroom context and school engagement are significant predictors of academic achievement. These factors are especially important for academically at-risk students. Grounded in an ecological systems perspective, this study examined links between classroom context, school engagement, and academic achievement among early adolescents. We took a…

This study investigated 2 questions: (1) do children show consistent styles of appraisal across a range of moderately stressful events?, and (2) what are the adjustment and parenting correlates of individual differences in children's appraisal style? Ninety-nine 3rd though 5th grade children and their mothers participated. For each of 6 vignettes…

Evidence-based classwide interventions have the potential to help a large number of students by preventing problem behaviors before they become a significant problem in the classroom. Results of a study examining the effectiveness of a classwide peer-modeling intervention package to improve students' on-task behavior in the classroom are…

This study is an investigation of whether social skills training provided by paraprofessionals to elementary grade children with Autism Spectrum Disorders (ASD) in both partially and fully included classrooms can result in perceived gains in social skills as measured by teacher ratings. Results showed that several areas of social responsiveness…

This study uses intraindividual variability and change methods to test theoretical accounts of self-concept and its change across time and context and to test the developmental implications of this variability. The 5-year longitudinal study of 541 youths in a rural Pennsylvania community from 3rd through 7th grade included twice-yearly assessments…

Students in large, lecture-based introductory psychology classes often do not have the benefit of experiential learning (EL) opportunities due to logistical constraints. To overcome this obstacle, we developed an EL project in which introductory psychology students in small groups present some aspect of the course material to local elementary…