Describes the use of geiger counters for scientific investigations and experiments. Presents information about background radiation, its sources and detection. Describes how geiger counters work and other methods of radiation detection. Provides purchasing information for geiger counters, related computer software and equipment. (MCO)

Explores what is meant by reading, noting that to read is to respond appropriately to a specific consensus centered on certain values and that the consensus is achieved among persons whose paths through life have come together with members of dominant discourses in society. (SLD)

This article defines test bias and reviews research methods most aptly applied postpublication to educational and psychological tests. Best methods for estimating bias in criterion-related or predictive validity and determining bias in construct validity across groups are explained. (Author/JDD)

Results of a nationwide survey of state definitions of giftedness are presented and compared with several federal definitions as well as with state definitions five years earlier (1985). Results indicated that most states use some modification of one of the federal definitions. (DB)

This special issue introduction identifies major issues in educating students with attention deficit disorder, including the definition of attention deficit disorder, congressional actions, and Department of Education actions. It also previews articles in the special issue and considers the leadership role of the federal Office of Special…

Posits that an evolutionary perspective can unite the study of the typical development for and individual variation within a species and that environments within the normal range for a species are required for species-normal development. Individual differences in children reared in normal environments arise primarily from genetic variation and…

Describes the difficulties of defining basic writers and basic writing. Argues that Michel Foucault's concept of the "author function" is applicable to academic and literary discourse and shows how it serves to organize curriculum and define the object of study in English departments. (HB)

Proposes that educational researchers consider the implications of a new psychological concept, dysrationalia: the inability to think and behave rationally despite adequate intelligence. The paper argues that researchers need an intuition pump, or prompt, like dysrationalia to aid in reconceptualizing intelligence because I.Q. tests do not measure…

This paper reports on a comparative evaluation of the Phrasal Definition Format of the Longman Dictionary of Contemporary English and the Sentence Definition format of the Collins COBUILD English Language Dictionary. The study found that English-as-a-Second-Language students expressed strong preferences for having usage examples and for the…

Article discusses the relationship between credentialing and professionalism in health education, including definitions and illustrations of common terminology, methods of certification, and examples of the professionalization process. A main emphasis is the application of Boyer's principles of an effective community interwoven into the concept of…

A testlet is an integrated group of test items presented as a unit. The concept of testlet differential item functioning (testlet DIF) is defined, and a statistical method is presented to detect testlet DIF. Data from a testlet-based experimental version of the Scholastic Aptitude Test illustrate the methodology. (SLD)

This article responds to Sylvia Richardson (EC 602 667), noting a failure to address the definitional issues associated with dyslexia. A definition of dyslexia is offered that considers the nature of the processing limitation underlying the disorder as well as the developmental changes that occur in the manifestation of the disorder. (Author/DB)

The concept of metacognition is discussed, with a review of attempts at definition. A. Brown's (1987) four historical roots of metacognition--verbal reports as data, executive control, self-regulation, and other-regulation--are summarized. Influence from the developmental theory of L. S. Vygotsky (1978) may result in a clearer conceptualization of…

Demonstrates how the legal, educational, and technical determination of adequacy is a process of social construction. Identifies the social values of accountability, responsibility, and community as underpinning the societal consensus building around the concept of a "minimally adequate education." At present, educational reform does not…

This introduction to five articles on literacy and deafness identifies issues concerned with standard literacy components and definitions, literacy assessments, literacy-related competencies for the workplace, literacy facilitators unique to deaf students, and implications for instruction of people with hearing impairments. (DB)