There has been increased attention to the development of assessment measures for evaluating mathematical skills in young children in order to inform instruction and intervention. However, existing tools have focused primarily on number sense with little attention to other areas of mathematical thinking such as geometry and algebra. The purpose of…

In this paper, the author aims to provide novice researchers with an understanding of the general problem of validity in social science research and to acquaint them with approaches to developing strong support for the validity of their research. She provides insight into these two important concepts, namely (1) validity; and (2) reliability, and…

Aim: The purpose of this study was to create and validate the Communication Function Classification System (CFCS) for children with cerebral palsy (CP), for use by a wide variety of individuals who are interested in CP. This paper reports the content validity, interrater reliability, and test-retest reliability of the CFCS for children with CP.…

The Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS) category is a psychopathological entity few have described and is poorly, and mainly negatively, defined by autism exclusion. In order to limit PDD-NOS heterogeneity, alternative clinical constructs have been developed. This study explored the reliability and the diagnostic…

The Health of the Nation Outcome Scales (HoNOS) family of measures is routinely used in mental health services in the New Zealand, Australia, and the United Kingdom. However, the psychometric properties of the HoNOS65+ for elderly people have not been extensively evaluated. The aim of the present study was to examine the validity, reliability, and…

Research was conducted to evaluate how well the "Indiana Reading Assessment--Kindergarten" evaluates various reading skills of kindergarten students. Multiple analyses were conducted; while the results of all the analyses were encouraging, the results derived from the concurrent validity study were most significant. All correlations were…

The reliability and validity of teacher ratings, the relationship between teacher ratings and principal self-reports of instructional leadership, and the degree to which they are influenced by demographic factors are examined in this study. Methodology involved completion of the Instructional Leadership Inventory, a self-report measure, by 81…

Research was conducted to evaluate how well the "Indiana Reading Assessment--Grade 1" evaluates various reading skills of grade one students. Multiple analyses were conducted; while the results of all the analyses were encouraging, the results derived from the concurrent validity study were most significant. All the correlations were…

Research was conducted to evaluate how well the "Indiana Reading Assessment--Grade 2" evaluates various reading skills of grade two students. Multiple analyses were conducted; while the results of all the analyses were encouraging, the results derived from the concurrent validity study were most significant. Correlations were either…