This paper advocates the use of post-hoc power analyses. First, a history and definition of statistical power are provided. Second, reasons for the nonuse of a priori power analyses are presented. Post-hoc power is defined and its usefulness delineated. Fourth, a heuristic example is provided to illustrate how post-hoc power can help rule in/out…

This study was designed to assess the (score) construct-related validity of an instrument called the School-Wide Cultural Competence Observation Checklist (SCCOC). The instrument was developed to use as a tool in conducting culture audits as a means of assessing school-wide cultural competence, or how well a school's programs, policies, and…

Although several antecedents of statistics anxiety have been identified, many of these factors are relatively immutable (e.g., gender) and, at best, identify students who are at risk for debilitative levels of statistics anxiety, thereby having only minimal implications for intervention. Furthermore, the few interventions that have been designed…

The purposes of this article are to position mixed methods research ("mixed research" is a synonym) as the natural complement to traditional qualitative and quantitative research, to present pragmatism as offering an attractive philosophical partner for mixed methods research, and to provide a framework for designing and conducting mixed methods…

The purpose of this paper is to discuss the development of research questions in mixed methods studies. First, we discuss the ways that the goal of the study, the research objective(s), and the research purpose shape the formation of research questions. Second, we compare and contrast quantitative research questions and qualitative research…

This paper identifies major errors and myths perpetuated by educational research textbooks. The most pervasive errors and myths advanced by methodology textbooks at the following eight phases of the educational research process are described: (a) formulating a research problem/objective; (b) reviewing the literature; (c) developing the research…

Since the latter part of the 19th century, a fervent debate has ensued about quantitative and qualitative research paradigms. From these disputes, purists have emerged on both sides. Quantitative purists express assumptions that are consistent with a positivist philosophy, whereas qualitative purists (i.e., post-positivists, post-structuralists,…

The present essay outlines how mixed methods research can be used to enhance the interpretation of significant findings. First, we define what we mean by significance in educational evaluation research. With regard to quantitative-based research, we define the four types of significance: statistical significance, practical significance, clinical…