Most conceptualizations of learning disabilities are based on discrepancies between ability and achievement, but the dimensions of this parameter have not been documented. Discrepancies for 83 third graders, 48 fifth graders, and 50 twelfth graders were compared. The use of ability achievement discrepancies to determine the need for special…

The impact of four early childhood education screening programs intended to identify handicapped children was evaluated using ecological case study methods. Results suggested that few screening and referral practices influenced screening outcomes in a consistent manner. (Author/DB)

In response to Hallahan et al, the authors suggest that variability in prevalence is a function of the methods used to examine prevalence differences and that the effect specific discrepancy criteria for learning disabilities have on the number of students identified is the critical issue. (Author/DB)

Preschool screening referral rates for developmental problems were examined for 219 Minnesota school districts across 2 school years. The state as a whole was consistent from year 1 to year 2 in terms of the percentage of children referred for screening. However, there was wide variation among individual districts. Three groups of districts were…

The article looks at the concept of discrepancy between ability and achievement in conceptualizations of learning disabilities. Comparison of ability and achievement scores found generally small average discrepancies, though some wide ranges were evident. Implications of the findings for current and future use of discrepancies as estimators of…

The report summarizes research conducted by the Institute for Research on Learning Disabilities (IRLD) on issues in assessment and identification of learning disabled (LD) students. The initial chapter highlights major findings from IRLD research studies on five topics: (1) the nature of the identification/classification process, (2)…

The psychoeducational processes school diagnosticians use in decisions about students were studied. Bogus referral problem information for one of 16 "cases" was provided: assessment data indicated average performance. Fifty-two percent of the subjects recommended special education for the average child; these decisions were a function of referral…

A common practice in the field of learning disabilities is analysis of ability-achievement discrepancies. The reliability of such difference scores is an important statistic in such decision making. In the study, selected ability and achievement devices were administered to a sample of 99 fourth grade low achievers (half of whom were identified as…

Examined ability of social, economic, and educational variables to predict screening referral rates among 398 school districts in statewide preschool screening program. Results from two studies indicated that screening referral rates were not related to broad social, economic, and educational factors in any simple way. Suggests implications for…

Educational decision makers (N=224) participated in a computer simulated decision making experience to ascertain the extent to which referral information on a child with a suspected handicapping condition biased classification decisions. Ss were randomly assigned to 16 conditions varying on the basis of the child's sex, socioeconomic status,…

A review of the history and current status of screening and differential diagnosis in the field of learning disabilities concludes that continued efforts at refinements in diagnosis/classification are unproductive. The authors offer a variety of concrete recommendations from a data-based perspective to make appropriate educational experiences…

Ecological case study methods were used in four early childhood special education (ECSE) screening programs to identify factors influencing outcomes of screening. Observations, interviews, file searches, and parent surveys were used to obtain multidimensional descriptions of ECSE programs, including outreach, screening, and referral practices. Two…

This study examined the extent to which students with disabilities are accessing alternative schools and Area Learning Centers (ALC) in Minnesota. Also of interest was the option used by students to enroll in the school, the extent to which students crossed district boundaries to attend the school, and differential participation by category of…