The Behavior Observation Scale for Autism: Initial Methodology, Data Analysis, and Preliminary Findings on 89 Children

The Behavior Observation Scale for autism (BOS): Initial results of factor analyses

“…The principal conclusion that can be drawn from these preliminary data is that developmental perspectives must be applied to the complex problem of diagnosing autism, these data clearly support our earlier findings that in order to develop objective behavioral diagnostic criteria, it is necessary to establish age-specific norms for the frequencies of behaviors exhibited by autistic children (Freeman et al, 1978;Freeman, Guthrie, Ritvo, Schroth, Glass, & Frankel, 1979). Also, behaviors of autistic children must be compared to those of chronological and mental age-matched groups of both normal and mentally retarded children.…”

“…As a result of our previously reported findings that some of the individually coded behaviors varied as a function of chronological and/or mental age (Freeman et al, 1978), we hypothesized that at least some of the behaviors within each group could be expected to depend on chronological and/or mental age. The sample size is not yet large enough to permit discriminant analyses of these groups of behaviors as a function of chronological or mental age.…”

Autism Behavior Checklist for Disability Estimation: A Preliminary Field Tryout

“…Cases with co-morbid Gilliam autism rating scale Gilliam 2006 12. Behavior rating instrument for autistic and atypical children Ruttenberg et al 1977 13. Behavior observation scale for autism Freeman et al 1978 14.…”

The behavioral summarized evaluation: Validity and reliability of a scale for the assessment of autistic behaviors

“…Bretonneau F-37044 Tours C~dex, France. 189 0162-3257/9o/0619o-0189506.0o/0 9 1990 Plenum Publishing Corporation nostic Checklist (1971), the Behavior Rating Instrument for Autistic and Atypical Children (BRIAAC; Ruttenberg, Dratman, Fraknoi, & Wenar, 1966;Ruttenberg, Kalish, Wenar, & Wolf, 1977), the Behavior Observation Scale for autism (BOS;Freeman, Ritvo, Guthrie, Schroth, & Ball, 1978), the Childhood Autism Rating Scale (CARS; Schopler, Reichler, DeVellis & Daly, 1980), the Childhood Autism Behavior Checklist (ABC) of the Autism Screening Instrument for Education Planning (ASIEP; Krug, Arick, & Almond, 1980a, 1980b. More recently, Teal and Wiebe (1986) investigated the effectiveness of three of these scales to discriminate autistic from mentally retarded children: the Rimland's E2, the CARS and the ASIEP.…”