The heterogeneous nature of Autism Spectrum Disorder (ASD) makes accurate diagnosis challenging. Best practice assessments in schools can open pathways to appropriate interventions and educational placements for those with ASD, as well as help identify a student's strengths. There are various tools used in school settings to assess autism. In this…

The rise in the prevalence of autism creates a need for a reliable and valid measure of attitudes towards autism. The current study describes the development of a brief 16-item measure of Societal Attitudes towards Autism (SATA) that exhibits sound psychometric properties and has a demonstrated ability to discriminate between expert and general…

There has been a dramatic worldwide increase in reported cases of autism over the past decade. Autism is much more prevalent than previously thought, especially when viewed as a spectrum of disorders (autism spectrum disorders; ASD). School-based professionals are now more likely to be asked to participate in the screening and identification of…

A fundamental assumption in the identification of specific learning disabilities (SLD) has been that the presence of a severe discrepancy between ability and academic achievement is a valid marker for the presence of a SLD. This assumption is based on the notion that discrepant low achievers constitute a unique group of children who are different…

Students identified as gifted who also display one or more areas of disability remain under-identified both in special and gifted education programs. All too often school personnel do not have the resources necessary to make decisions about this unique group of students commonly called the twice-exceptional. The purpose of this article is to…

English language learners with disabilities (ELLWD) face many challenges in their academic career. Learning a new language and coping with their disabilities create obstacles in their academic progress. Variables relegating accessibility of assessments for students with disabilities and ELL students may seriously hinder the academic performance of…

Accommodations to standard test administrations are granted on many tests for students who have one or more disabling conditions. In some instances, students' scores from these nonstandard administrations are "flagged" to caution those who interpret the test score that the test was not administered under typical conditions. The practice of…

The Early Development Index (EDI) is a teacher-completed checklist, intended to be a population-level tool to measure children's readiness for school and to alert communities to potential developmental problems in children. In response to the increasing popularity of the EDI, this paper provides a critical and timely evaluation and identifies the…

The conventional use of standardized testing within a discrepancy analysis model is reviewed. The Response-to-Intervention (RTI) process is explained, along with descriptions of assessment procedures within RTI: functional assessment, authentic assessment, curriculum-based measurement, and play-based assessment. Psychometric issues relevant to RTI…

The Scale of Pervasive Developmental Disorder in Mentally Retarded Persons (PDD-MRS) is described. The PDD-MRS is a simple classification and screening instrument devised for identification of autistic disorders (of the entire spectrum) in persons with mental retardation from mild to profound levels, age-range 2-55 years. The norms of the scale…

This article describes errors resulting from use of standardized language tests using a "normal" sample as the normative comparison group. Resulting errors include, among others, identifying normal children as language impaired, providing misleading profiles of verbal and nonverbal performance, and inability to determine impairment severity.…

Considerable variation exists across response-to-intervention (RTI) approaches. There is currently insufficient research on outcomes associated with these different RTI approaches to inform decision-making. However, school psychologists who are asked to work within an RTI model need guidance to select an approach that has a high likelihood of…