Rigorous comparison of the reliability coefficients of several tests or measurement procedures requires a sampling theory for the coefficients. This paper summarizes the important aspects of the sampling theory for Cronbach's (1951) coefficient alpha, a widely used internal consistency coefficient. This theory enables researchers to test a specific numerical hypothesis about the population alpha and to obtain confidence intervals for the population coefficient. It also permits researchers to test the hypothesis of equality among several coefficients, either under the condition of independent samples or when the same sample has been used for all measurements. The procedures are illustrated numerically, and the assumptions and derivations underlying the theory are discussed.

The DOCEE was shown to have good reliability and interrater agreement between two independent specialist and non-specialist examiners on the scoring, ranking and pass/fail classification of student performance. It has adequate content and concurrent validity and provides unique information about students' clinical competence.

Prospective educators who completed a course about social work with disabilities were participants in a study that investigated whether attitudes toward individuals with mental retardation (MR) would be enhanced by the information provided in the course. The quasi-experimental design of the study involved a control group together with a pretest and a posttest, and several demographic and experiential variables. The study used a version of the Mental Retardation Attitude Inventory-Revised that Kandari and Salih (in press) adapted for the Kuwaiti culture. Results revealed that the course did not influence students' attitudes toward individuals with MR. The authors discussed the findings in relation to determining the changes needed in the course's curriculum and evaluating the information provided for prospective educators in order for them to support the integration of individuals with MR into mainstream society.

The purpose of this research was to adapt Antonak and Harth's (1994) Mental Retardation Attitudes Inventory for the Kuwaiti culture and to investigate its four‐dimensional structure. The study also aimed at identifying a unidimensional subset of items besides examining the quality of the identified items and the overall inventory. The 34 ‐item adapted inventor y was administered to 56 4 college students. Item analysis indicated that 29 items have had good psychometric characteristics. However, the exploratory factor analysis, cross‐correlations of scale and item scores, and correlations among scales did not support the four‐dimensional structure of the adapted inventory. Further, the sample was split into two random halves. A uni‐dimensional subset of 20 items was identified in one sample by iterative factor analyzing the item data and discarding items with small loadings. The other sample was used to cross‐validate uni‐dimensionality of the identified items. Analysis indicated that scores of the 20‐item inventory have high Cronbach coefficient alpha, and high stability and generalizability coefficients. Partial support for the validity of the scores had been ascertained by comparing the scores of male and female students, and by regressing the inventor y scores on indicators of familiarity with individuals with mental retardation. Findings were discussed with reference to Kuwaiti culture. Over the last two decades, inclusion has internationally become a critical part of the reform efforts to improve the delivery of services to individuals with Mental Retardation (MR). This trend focuses on increasing the opportunities for the placement of these individuals in the same social and educational set tings as individuals without MR. The new arrangements for providing services have created challenges to people without disabilities concerning acceptance, integration, and inclusion of individuals with MR into the mainstream of society (Praisner, 2003). Many researchers (e.g. Priestly, 1998; Yazbeck McVilly & Parmenter, 2004) have convincingly argued that these challenges have their roots in the societal norms and values that concurrently developed throughout the unfolding history of the meaning of MR. As Priestly (1998) noted, although people with differences have existed in all societies, the degree to which they were integrated or excluded varied according to predominant cultural perceptions. Yazbeck, McVilly and Parmenter (2004) suggested that people's attitudes toward individuals with MR are socially constructed and are acquired through experience over time. Individuals with MR are often judged by people based on their disability instead of their whole lives and what they may accomplish and experience during their life (Blatt, 1987). Consequently, People may rely on false generalization and develop negative attitudes towards individuals with MR. Makas, Finnerty‐Fried, Sugafoos, and Reiss (1988) noted that for nondisabled persons, positive attitude toward people with disability is usually conceptualized as be...