Explicates a definition and theory of "aboutness" and aboutness analysis developed by text linguist van Dijk; explores implications of text linguistics for bibliographic classification theory; suggests the elements that a theory of the cognitive process of classifying documents needs to encompass; and delineates how people identify…

Defining "information overload" as the condition that occurs when the amount of available information exceeds the ability of the user to process it, this paper contends that this condition has now affected the arena of academic debate. The first section of the paper examines the nature of overload and discusses its consequences on the…

In response to a previous article, the paper stresses that, in addition to theory development, the field of learning disabilities needs to resolve definitional issues involving disability specificity, intelligence, measurement concepts, and the continua of abilities. Suggestions for developing operational definitions of both learning disabilities…

Phonological awareness is explored as a process for studying the cognitive deficits of dyslexic children without undermining the assumption of specificity. Discussed are the operation of Matthew effects, the importance of strict psychometric criteria in dyslexia definitions, and recognition that dyslexia represents an arbitrary criterion in a…

This paper addresses research implications of proposed modifications of the definition of "severe emotional disturbance" to include students with conduct disorders. Research questions focus on understanding the nature of antisocial, aggressive behavior in children and youth and identifying what services they need. Research is cited suggesting that…

Reviews the current literature concerning prior knowledge in an attempt to clarify problems with the terminology. Identifies the three main problems: lack of definition or vagueness, nominal versus real definitions, and different names/same constructs or same name/different constructs. Includes a conceptual map of prior knowledge terminology. (MJP)