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Direct linkDunst, Carl J.; Hamby, Deborah W. – Journal of Intellectual & Developmental Disability, 2012
This paper includes a nontechnical description of methods for calculating effect sizes in intellectual and developmental disability studies. Different hypothetical studies are used to illustrate how null hypothesis significance testing (NHST) and effect size findings can result in quite different outcomes and therefore conflicting results. Whereas…
Descriptors: Intervals, Developmental Disabilities, Statistical Significance, Effect Size
Verbeke, Aynsley K.; Martin, Garry L.; Thorsteinsson, Jennifer R.; Murphy, Colleen; Yu, C. T. – Journal of Behavioral Education, 2009
Level 6 of the Assessment of Basic Learning Abilities (ABLA) assesses the ease or difficulty with which persons with developmental disabilities are able to learn a two-choice auditory-visual discrimination. We investigated whether participants who passed ABLA Level 6 (Group 1) would more readily learn object naming (vocal tacts) than those who…
Descriptors: Mental Retardation, Developmental Disabilities, Visual Discrimination, Adjustment (to Environment)
Gregory, Meagan K.; DeLeon, Iser G.; Richman, David M. – Journal of Applied Behavior Analysis, 2009
Establishing a relation between existing skills and acquisition of communicative responses may be useful in guiding selection of alternative communication systems. Matching and motor-imitation skills were assessed for 6 children with developmental disabilities, followed by training to request the same set of preferred items using exchange-based…
Descriptors: Augmentative and Alternative Communication, Severe Mental Retardation, Imitation, Developmental Disabilities
Akshoomoff, Natacha; Stahmer, Aubyn C.; Corsello, Christina; Mahrer, Nicole E. – Journal of Positive Behavior Interventions, 2010
This study was a follow-up of a group of 29 children diagnosed with autism spectrum disorders at age 2 who attended an inclusive toddler program until age 3. Children ranged in age from 4 to 12 years at the time of the parent survey and follow-up testing. The majority of children were placed in a special education (noninclusive) preschool class,…
Descriptors: Socialization, Autism, Toddlers, Interpersonal Competence
Reichow, Brian; Salamack, Shawn; Paul, Rhea; Volkmar, Fred R.; Klin, Ami – Communication Disorders Quarterly, 2008
The purpose of this study was to investigate the concurrent validity of subtests on the "Comprehensive Assessment of Spoken Language" (CASL) by comparing them with the assessment of communication and social skills on the "Vineland Adaptive Behavior Scales" ("Vineland"). The participants were 35 children and…
Descriptors: Delayed Speech, Autism, Oral Language, Validity
Siaperas, Panagiotis; Beadle-Brown, Julie – Autism: The International Journal of Research & Practice, 2006
In November 2001, the Greek Society for the Protection of Autistic People (GSPAP) established the first residence for people with autism in Greece, following the guidelines of structured teaching and the TEACCH method with all 12 of the residents. Using interview questionnaires and systematic naturalistic observations, this case study explored the…
Descriptors: Case Studies, Foreign Countries, Adults, Autism
