Single-case design (SCD) is a quantitative experimental technique in which participants serve as their own control. The use of an effect size in SCD allows evaluation of outcomes as well as comparison of outcomes via meta-analyses. Characteristics of SCD research make the selection of an appropriate effect size complicated. Additionally, there are…

We conducted a scoping review on the consecutive controlled case series (CCCS) methodology (Hagopian, 2020). The CCCS is an approach to studying functional relations across a series of consecutive cases that share common features. We identified and reviewed 76 studies that used CCCS methodology. Most of these (a) were retrospective CCCS studies…

Single-case experimental designs (SCEDs) have a long history in clinical and educational disciplines. One underdeveloped area in advancing SCED design and analysis is understanding the process of how internal validity threats and operational concerns are avoided or mitigated. Two strategies to ameliorate such issues in SCED involve replication and…

Single-case experimental designs (SCEDs) have been used with increasing frequency to identify evidence-based interventions in education. The purpose of this study was to explore how several procedural characteristics, including within-phase variability (i.e., measurement error), number of baseline observations, and number of intervention…

In this case study, I provide the methodologic approaches I used to investigate four in-service biology teachers' perspectives when using science instruction to address racial stereotypes within secondary science education. This case study provides practical advice for novice qualitative researchers who wish to conduct and design an intervention…

The problem with most commissioned studies is that they are generally anchored on research protocols, guidelines and theoretical underpinnings imposed by research grant makers or the external Principal Investigator's (PI) own research design preferences. Furthermore, the problem is that researchers who are recruited during various phases of…

In the field of educational technology and instructional design, research methods are emerging that aim to curate different forms of knowledge and insights beyond traditional research studies, or what Reigeluth and An (in Reigeluth and Carr-Chellman (eds) Instructional-design theories and models: Building a common knowledge base, Lawrence Erlbaum…

This case study considers classroom-based qualitative research conducted using semistructured interviews and classroom-based ethnography and carried out in a publicly funded special education program for high school students with autism spectrum disorder. In response to a paucity of special education research focused on student perspectives, the…

Single-case designs substantiate the effectiveness of interventions for people with disabilities and other populations through the repeated measurement of behavior over time. Consequently, employing accurate and reliable systems of measurement is critical to the validity of single-case designs. Much of the data in single-case research are…

This case study is based on a program evaluation of a professional certificate program that trains early childhood care and education providers to build and support young children's emotional literacy. The research project described in the case study will address approaches to methodological combination, justifying research design and changes to…

In this case study I reflect on challenges and successes of building relationships with native people before and during my dissertation research. Obstacles encountered include switching from in person recruiting and interviews to online strategies because of the COVID-19 pandemic. I review strategies in building resilience into the research…