I gathered 77 randomized experiments (with 111 treatment arms) that evaluated the effects
of school-based interventions on learning in develo**-country primary schools. On …

Background The benefits of physical activity (PA) on children's health and wellbeing are well
established. However, the benefits of PA on academic performance and particularly on …

The use of survey experiments has surged in political science. The most common design is
the between-subjects design in which the outcome is only measured posttreatment. This …

Since Peter H. Rossi, Mark W. Lipsey, and Howard E. Freeman first published Evaluation: A
Systematic Approach, more than 90,000 readers have considered it the premier text on how …

The use of multilevel modeling (MLM) to analyze nested data has grown in popularity over
the years in the study of school psychology. However, with the increase in use, several …

statistics-based power analysis: A new and practical method to determine sample size for
mixed-effects modeling. © 2022 American Psychological Association Psychological Methods …

Background Although professional development (PD) programs often use video, extraneous
information during video viewing can distract teachers. We developed a discourse …

Experiments in psychology or education often use logistic regression models (LRMs) when
analyzing binary outcomes. However, a challenge with LRMs is that results are generally …

Conversational agents can facilitate learning discussions by applying natural language
understanding to process students' discourse. Agents can assume the roles of figures such …

When used appropriately, non-significant p-values have the potential to further our
understanding of what does not work in education, and why. When misinterpreted, they can …