We present 11 evidence-based practices for teaching writing to students. These include recommendations for teaching writing to younger students (aged 5-11) and older students (aged 6-18). The recommendations are based on findings from close to 1000 investigations. The proposed recommendations are (1) students need to write, but writing is not…

A variety of measures have been developed to quantify intervention effects for single-case experimental design studies. Within the family of non-overlap indices, the Tau-U measure is one of the most popular indices. There are several Tau-U variants, each one calculated differently. The appropriateness of each Tau-U variant depends upon the data…

Formal empirical assessments of replication have recently become more prominent in several areas of science, including psychology. These assessments have used different statistical approaches to determine if a finding has been replicated. The purpose of this article is to provide several alternative conceptual frameworks that lead to different…

Theories of writing development posit several component skills as necessary to the writing process. This meta-analysis synthesizes the literature on the correlation between these proposed component skills and writing outcomes. Specifically, this study examines the bivariate relationship of handwriting fluency, spelling, reading, and oral language…