Seven empirical studies from this special issue and an overview chapter are reviewed to illustrate several points about studying the possible effects of treatment intensity manipulations on generalized skill or knowledge acquisition in students with disabilities. First, we make a case in favor of studying intensity as separate from complexity and…

Evaluation of evidence-based treatments is important for adolescents and adults with autism spectrum disorders (ASD) given the increasing number of interventions available and the prevalence of ASD. In this study, we sought to evaluate the effectiveness of behavioral interventions for this population by conducting a meta-analysis of published…

Plotting data from a second observer have been suggested as an alternative to presenting only mean agreement and ranges across sessions. One argument against this method of reporting is that plotting these data would not change analysis decisions by persons analyzing graphs. To empirically test this argument, we asked graduate students to analyze…

The present study evaluated the utility of brief experimental analysis (BEA) in predicting effective interventions for increasing the math fluency of 3 elementary students identified as having math skill deficits. Baseline data were collected followed by implementation of a BEA consisting of the following interventions: cover, copy, and compare,…

The National Assessment of Educational Progress found that only 25% of 4th, 8th, and 12th grade students were at grade-level writing proficiency (Greenwald et al. 1999). Insufficient writing skill is a major contributor to lack of school and college success. The current study evaluated a modification of "Quickwrite" (Maloney 1998), a strategic…

We used an adapted alternating treatments design to evaluate and compare the effects of 2 spelling interventions on spelling acquisition and maintenance, word reading, and vocabulary in three first-grade students. The first intervention, Cover, Copy, and Compare (CCC), involved having participants look at a word, cover it, write it, then compare…

This paper defines and promotes the qualities of a "bottom-up" approach to single-case research (SCR) data analysis. Although "top-down" models, for example, multi-level or hierarchical linear models, are gaining momentum and have much to offer, interventionists should be cautious about analyses that are not easily understood, are not governed by…

The effectiveness of an intervention package involving self-management and a group contingency at increasing appropriate classroom behaviors was evaluated in a sample of middle school students. Participants included all students in each of the 3 eighth-grade general education classrooms and their teachers. The intervention package included…

A multiple-baseline design across math-fact sets was used to evaluate the effects of a taped-problems intervention on students' performance with addition facts and their inverses in an intact, rural, second-grade classroom. Results suggested that the procedure was effective in improving fluency on math facts as well as their inverses. Across 3…

The effectiveness of fixed-time delivery of attention to increase the on-task behavior of 2 students in general education was examined. The teacher in this study provided attention to students on a 5-min fixed-time schedule and responded to students in her typical manner between cued intervals. An ABAB withdrawal design was used to test the…

We evaluated whether differences in treatment effectiveness or preference between languages emerged across Spanish and English during functional communication training (FCT) for young children with developmental disabilities exposed to Spanish and English in the home environment. Participants were 2 young children with developmental disabilities…

Discrete trial training was delivered using English and Spanish languages to a student with autism from a Spanish-speaking family. An alternating treatments design was used to examine the effects of language of instruction on the child's response accuracy and challenging behavior. More correct responses and fewer challenging behaviors occurred…

Traditional drill and practice (TD) and incremental rehearsal (IR) are two flashcard drill instructional methods previously noted to improve word recognition. The current study sought to compare the effectiveness and efficiency of these two methods, as assessed by next day retention assessments, under 2 conditions (i.e., opportunities to respond…

When students display disruptive behaviors, it interferes with their own, and other students' learning and with the teacher's ability to instruct during academic activities. This study investigated the effects of a classwide interdependent group contingency on the on/off-task behaviors of an at-risk student in a first-grade classroom in a private…

The purpose of this review is to provide a systematic analysis of studies involving the use of computer-based interventions (CBI) to teach communication skills to children with autism spectrum disorders (ASD). This review evaluates intervention outcomes, appraises the certainty of evidence, and describes software and system requirements for each…