Special educators serve a diverse population of students with unique strengths and needs, and adaptive interventions that account for individual differences before and during the intervention are an important tool to moving the field toward more individualized practices. The purpose of this article is to detail the conceptualization and…

The brain undergoes profound development across childhood and adolescence, including continuous changes in brain morphology, connectivity, and functioning that are, in part, dependent on one's experiences. These neurobiological changes are accompanied by significant changes in children's and adolescents' cognitive learning. By drawing from studies…

Interventions often require multiple decisions to improve outcomes for every student. Whether the decision to implement a practice, tailor an existing protocol, or change approaches, these decisions should be based on individual variables and outcomes via a sequence of treatment. To develop adaptive interventions that have sufficient evidence to…

How well doctoral students in special education are prepared to evaluate research as evidence-based practice (EBP) is likely to impact their careers, as well as the teachers they will train. In developing a method for evaluating the readiness of small cohort groups of doctoral students to apply a research-based model of EBP, an instrument and…

In human research, studies of return of fear (ROF) phenomena, and reinstatement in particular, began only a decade ago and recently are more widely used, e.g., as outcome measures for fear/extinction memory manipulations (e.g., reconsolidation). As reinstatement research in humans is still in its infancy, providing an overview of its stability and…

One obstacle to understanding abstract concepts such as the "control of variables" strategy (CVS) is the tendency for learners to focus on surface rather than deep features in instructional materials. However, in tasks such as learning CVS, these same surface features may also support understanding, provided learners realize the…

Adelman, Marquis, Sabatos-DeVito, and Estes (2013) collected word naming latencies from 4 participants who read 2,820 words 50 times each. Their recommendation and practice was that R2 targets set for models should take into account subject idiosyncrasies as replicable patterns, equivalent to a subjects-as-fixed-effects assumption. In light of an…

Experiments allow researchers to randomly vary the key manipulation, the instruments of measurement, and the sequences of the measurements and manipulations across participants. To date, however, the advantages of randomized experiments to manipulate both the aspects of interest and the aspects that threaten internal validity have been primarily…

Preservice general education classroom teachers in an inclusion course were asked to describe their own earliest memories of students with disabilities in school. Substantial literature links early memories to subsequent thoughts and attitudes. Subjects also completed the Opinions Relative to Integration of Students with Disabilities attitude…

The purpose of this study was to highlight the role of twin designs in understanding children's conversational interactions. Specifically, we (a) attempted to replicate the findings of genetic effects on children's conversational language use reported in DeThorne et al. (2008), and (b) examined whether the language used by examiners in their…

The big-fish-little-pond effect (BFLPE) refers to the theoretical prediction that equally able students will have lower academic self-concepts in higher-achieving or selective schools or programs than in lower-achieving or less selective schools or programs, largely due to social comparison based on local norms. While negative consequences of…

Objective: To examine the underlying mechanisms of adults' intended caregiving responses to cry sounds in a behavioral genetic design and to investigate the role of cry pitch and perceived urgency in sensitive and harsh caregiving responses. Methods: The sample consisted of 184 adult twin pairs (18-69 years), including males and females, parents…

Effort on homework has a profound impact on student achievement. Researchers typically use an interindividual research design to explain homework effort. In this study with a total of 511 students from Grades 8 and 9, an interindividual perspective (focus on between-students differences) was combined with an intraindividual perspective (focus on…

Purpose: In this study, the authors investigated speech rhythm acquisition by bilingual Spanish-English-speaking children, comparing their performance with functionally monolingual peers in both languages and to monolingual and bilingual adults. Method: Participants included younger children (3;9 [years;months] to 4;5.15 [years;months.days]),…

Describes the use of repeated-measures designs in the study of whole families, specifically differences in perception between family members. Addresses the specific advantages and disadvantages of these designs; analysis of variance and multivariate analysis of variance applications; and practical issues of assumptions, multiple comparison,…