Purpose: In this article, we review the role of retrieval practice on the word learning and retention of children with specific language impairment (SLI). Method: Following a brief review of earlier findings on word learning in children with SLI and the assumptions behind retrieval practice, four experiments are described that compared novel words…

We evaluated a self-instructional training manual for conducting multiple-stimulus without replacement stimulus preference assessment. The manual was compared to a method description, adapted from the method sections of previous published research articles, in an unbalanced crossover design with 18 undergraduate university students, randomly…

Preference assessments directly evaluate items that may serve as reinforcers, and their implementation is an important skill for individuals who work with children. This study examined the effectiveness of pyramidal training on teachers' implementation of preference assessments. During Experiment 1, 3 special education teachers taught 6 trainees…

This study evaluated the effects of simulation training to teach functional community skills to four students with developmental disabilities in middle school. A multiple probe across participants and multiple probe across behaviors allowed for an evaluation of a functional relation between simulation and skill acquisition. Students learned how to…

This study aimed to examine the use of a predictive stimulus (Time Timer[TM]) and delayed reinforcement to increase appropriate waiting behavior in a child with developmental disabilities and problem behavior maintained by access to tangible items and activities. The study employed a changing criterion design across settings to gradually increase…

Picture Exchange Communication System (PECS) is a picture-based communication strategy used to teach communication skills to persons with developmental disabilities including autism. This article systematically reviews 13 published single-subject studies to examine the effectiveness of PECS, the effects of PECS on speech and problem behaviors,…

Seven children aging between 3 and 6 years with developmental disabilities were participated in this study, which examined the effects of the Activity-Based Intervention Program (ABIP) on the transition skills. The study used time series design and the implementation process was composed of "before instruction phase", "instruction…

We reviewed twelve studies that used the constant time delay (CTD) procedure to teach chained tasks to individuals with developmental disabilities from years 1996-2006. Variables analyzed include types of tasks that have been taught with the procedure, how effective CTD has been in teaching participants, and whether researchers have investigated…

Background: The Snoezelen[R] is a multisensory intervention approach that has been implemented with various populations. Due to an almost complete absence of rigorous research in this field, the confirmation of this approach as an effective therapeutic intervention is warranted. Method: To evaluate the therapeutic influence of the…

This study examined the effects of training and feedback on instructor performance of Discrete Trial Teaching (DTT) and support skills. This included an examination of the generalization and maintenance of instructor skills, and the impact of instructor skills on student performance. Six undergraduate research assistants received an 8-hour…

The purpose of this study was to critically review the empirical evidence surrounding three assertions presented by FlagHouse concerning Snoezelen[R] environments in day school public education settings. Given the absence of empirical literature examining the use of Snoezelen[R] in day school settings, the authors analyzed five studies that were…

The purpose of this study was to determine the effect of systematic instruction with a concrete representation on the acquisition of an algebra skill for students with moderate developmental disabilities. Three high school students with moderate developmental disabilities participated in this study. A multiple probe across participants research…

The present study was designed to determine whether parents (three mothers and one grandmother) could implement CBI with SP reliably for teaching community skills to their children and the effects of parent-delivered intervention on teaching the community skills. Maintenance and generalization effects of the intervention were also analyzed in the…

The generality and long-term maintenance of a pairing procedure designed to improve the efficacy of less intrusive procedures were evaluated for the treatment of problem behavior maintained by automatic reinforcement exhibited by 2 individuals with developmental disabilities. Results suggested that a less intrusive procedure could be established…

The instructional scheduling arrangements of simulated and community-based instruction across an equivalent set of functional and vocational skills were examined. Five secondary age students with moderate intellectual disabilities participated in four instructional scheduling arrangements measuring skill acquisition, generalization, and…