Single-case research design is a useful methodology for evaluating the presence of a functional relation between an intervention and the mathematical performance of students with a learning disability. However, a functional relation cannot be established with threats to internal validity of the design. External validity is impacted if researchers…

This meta-analysis examined the ecological and population validity of intervention research for students with low mathematics achievement (SWLMA). Forty-four studies published between 2005 and 2019 that met the inclusionary criterion were included in this analysis. Our findings suggest, to improve the external validity and generalizability of…

A review of six articles (1978-present) on vocabulary interventions involving secondary students with learning disabilities found interventions fall into four areas: computer-assisted instruction, fluency-building vocabulary practice activities, mnemonic strategy instruction, and concept enhancement instruction. Overall, positive results were…

Experimental attempts at assessing the social perception skills of learning disabled (LD) children are reviewed, along with methodological concerns relative to these experiments, and possible directions for future social perception research. Ten studies that examined LD children's ability to interpret nonverbal cues indicated they performed more…