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This article reports on a comprehensive literature review and meta-analysis of 68 experiments on teaching mathematics to individuals with significant cognitive disabilities. Most of the studies in the review addressed numbers and computation or measurement. Within the computation studies identified, most focused on counting, calculation, or number matching. For the measurement studies, nearly all focused on money skills. Of the 54 single subject design studies, 19 were classified as having all quality indicators for research design (13 representing the National Council of Teachers of Mathematics Measurement standard and 6 representing the Numbers and Operations standard). These studies offer strong evidence for using systematic instruction to teach mathematics skills and for using in vivo settings.

Older people with intellectual disability (ID) are characterized by low physical activity (PA) levels. PA is important for reducing health risks and maintaining adequate fitness levels for performing activities of daily living. The aim of this study was to explore preferences of older adults with ID for specific physical activities, and to gain insight into facilitators and barriers to engaging into PA. Fourteen in-depth interviews and four focus groups were undertaken, with a total of 40 older adults with mild and moderate ID included in the analysis. NVivo software was used for analysing the transcribed verbatim interviews. In total, 30 codes for facilitators and barriers were identified. Themes concerning facilitators to PA were enjoyment, support from others, social contact and friendship, reward, familiarity, and routine of activities. Themes concerning barriers to PA were health and physiological factors, lack of self-confidence, lack of skills, lack of support, transportation problems, costs, and lack of appropriate PA options and materials. The results of the present study suggest that older adults with ID may benefit from specific PA programs, adapted to their individual needs and limitations. Results can be used for developing feasible health promotion programs for older adults with ID.

There has been limited research on the acquisition of grade-aligned science skills for students with moderate intellectual disability, with even more restriction on academic skills in inclusive settings. This study examined the effects of peer-mediated time-delay instruction to teach inquiry science and use of a knowledge chart to students with moderate intellectual disability in an inclusive setting. Six general education peers implemented an embedded constant time-delay procedure during three science units with 5 students with moderate intellectual disability. All 5 students increased the number of correct science responses across all science units. Three students required additional support by the special education teacher to reach mastery. In addition, all 6 peers were able to implement the intervention with high fidelity, while maintaining science grades at preintervention levels. High levels of social validity were reported.

The aim of this study was to explore barriers and facilitators in the implementation of a health course for adults with mild or moderate intellectual disabilities. An inductive qualitative design was used. Data were collected from a health course conducted in 16 study groups with 83 participants in Stockholm, Sweden by unstructured observations in course sessions, a group discussion with course leaders and evaluation notes from the course leaders. The data were analysed by qualitative content analysis. Four categories were identified: (i) \"individual characteristics\", implying various needs, (ii) \"pedagogical strategies\" used to meet those needs, (iii) \"interaction within the course\", dealing with active and less active participation and (iv) \"structures\", including learning climate and organizing. The overarching theme \"creating an individualized supportive context\" describes the challenge of educating people with intellectual disabilities towards an empowered and well informed decision making regarding their own health. Therefore, there is a need for support not only within the course but also from the social and physical environment as well.

This study investigated the extent to which the overrepresentation of African American students in more restrictive special education settings is attributable to their overrepresentation in disability categories more likely to be served in more restrictive educational environments. Within 5 disability categories (emotional disturbance, mild mental retardation, moderate mental retardation, learning disabilities, and speech and language), African American students were overrepresented in more restrictive educational environments and underrepresented in less restrictive environments relative to all other students with the same disability. Disproportionality was most evident in those disability categories served primarily in general education settings. Given the social consensus regarding inclusion, disproportionality in restrictiveness of educational environment may represent a more serious challenge than disproportionality in disability categories.

This study examined the effects of self-directed video prompting presented via an iPod Touch on teaching four adolescents with moderate-to-severe intellectual and developmental disabilities two daily living tasks. Students were taught to wash a table using instructor-delivered video prompts. After reaching 80 % correct for at least three consecutive sessions, a system of most-to-least prompts was used to teach them to use the iPod Touch and a video prompting app (inPromptu) independently. In the final phase, students used inPromptu on the iPod Touch to teach themselves to vacuum with self-directed video prompts. Results of the study demonstrate that all four students learned to wash a table with instructordirected video prompts, they all learned to use inPromptu on the iPod Touch independently, two students used inPromptu on the iPod Touch to teach themselves to vacuum, and a third student was learning to vacuum using inPromptu.

This article examines the impact of multiple individual and ecological factors on the self-determination of students with learning disabilities, mild and moderate mental retardation, and other health impairments. Baseline data from a multistate, longitudinal research project evaluating interventions to promote self-determination were examined using structural equation modeling. The findings suggest that teachers viewed students' capacity for self-determination differently based on level of cognitive impairment, but not students' opportunities for self-determination. Capacity, opportunity, and transition empowerment predicted students' self-reported level of self-determination, but the degree to which students were included in general education did not. Significant differences emerged in the pattern of predictive relationships, however, depending on the measure of self-determination utilized. Also discussed are implications for research and practice.

The effects of a multicomponent intervention (a self-operated video modeling and self-monitoring delivered via an electronic interactive whiteboard (IWB) and a system of least prompts) on skill acquisition and interaction behavior of two students with autism and one student with moderate intellectual disability were examined using a multi-probe across students design. Students were taught to operate and view video modeling clips, perform a chain of novel tasks and self-monitor task performance using a SMART Board IWB. Results support the effectiveness of a multicomponent intervention in improving students’ skill acquisition. Results also highlight the use of this technology as a self-operated and interactive device rather than a traditional teacher-operated device to enhance students’ active participation in learning.

Constant time delay (CTD) and simultaneous prompting (SP) are effective response prompting procedures for teaching students with moderate to severe disabilities. The purpose of this study was to compare the efficiency of CTD and SP when teaching functional sight words to four students, 8-11 years of age, with moderate intellectual disability (ID) or dual diagnosis of moderate ID and autism spectrum disorder. An adapted alternating treatments design was used to evaluate the efficiency of CTD and SP procedures in regard to (a) percent of training errors, (b) total number of sessions, (c) mean minutes of training time, and (d) total number of trials through criterion. Results indicated that CTD resulted in fewer errors and SP required less instructional time, with mixed results for number of sessions and trials through criterion.

This study investigated the effects of a peer-delivered system of least prompts intervention and adapted grade-level science read-alouds on correct listening comprehension responses for participants with moderate intellectual disability. The intervention package included prompts in which selected text was read again. Participants directed the amount of assistance they received from peer tutors by asking for help when needed and self-monitored their independent correct responses. Text was adapted from fourth grade science curricula currently being used by the general education fourth grade class. A question template was used to create factual recall and inferential questions and a multiple probe design across participants was used to determine the functional relationship between the system of least prompts intervention and listening comprehension. Outcomes indicated that the intervention was effective for teaching listening comprehension for all participants, but intervention effects did not generalize to untrained lessons. The study's contributions to research, limitations, need for future research, and implications for practice are discussed.