Some children with autism demonstrate poor nonword repetition--a deficit considered to be a psycholinguistic marker of specific language impairment (SLI). The present study examined whether there is an SLI subtype among children with autism. We compared the language abilities of children with SLI (n = 34, M age = 11;10 S.D. = 2;3), and children…

Background: The identification of specific nonshared environments responsible for the variance in behaviour problems is a key challenge. Methods: Nonshared environmental influences on teacher-reported behaviour problems were explored independently of genetics using the monozygotic (MZ) twin differences design. Six aspects of classroom environment…

Programs supported by the Carl D. Perkins Act of 2006 are required to operate under the state or national content standards, and are expected to carry out evaluation procedures that address accountability. The Indiana high school course, "Advanced Life Science: Foods" ("ALS: Foods") operates under the auspices of the Perkins…

The need for the development of a biotechnician curriculum was investigated. A search for operational job descriptions for biotechnicians was conducted. Industry consensus was that this is a generic term too broad to be useful. Biotechnology companies within a 300-mile radius of Chicago and universities and other colleges in Illinois that hire…

Discusses the role of the fruit fly in genetics research requiring a multidisciplinary approach. Describes embryological and genetic methods used in the experimental analysis of this organism. Outlines the use of Drosophila in the study of the development and function of the nervous system. (RT)

Describes three methods and their advantages and disadvantages for introducing genes into animals. Discusses the predictability and tissue-specificity of the injected genes. Outlines the applications of transgenic technology for studying gene expression, the early stages of mammalian development, mutations, and the molecular nature of chromosomes.…

Discussed is the need for producing varieties of plants that can withstand the depredations of pests and diseases and are more adapted to stress conditions. Genes for better resistance and adaption are being found in conserved ancient farmers' varieties and related wild species. The importance of conserving these strains is emphasized. (KR)

Most attention deficit hyperactivity disorder (ADHD) research has compared cases with unaffected controls. This has led to many associations, but uncertainties about their specificity to ADHD in contrast with other disorders. We present a selective review of research, comparing ADHD with other disorders in neuropsychological, neurobiological and…

Presented is an explanation of a non-Darwinian theory of evolution based on the premise that functional differences are the result of many small mutations such as the substitution of one amino acid for another in a large protein molecule. A brief overview of Darwinian evolution and other theories are presented. (EB)

The directory lists approximately 120 mutual support groups concerned with the medical and psychological impacts of genetic disorders and birth defects on individuals and their families. The groups are dedicated to serving the ongoing emotional, practical, and financial needs of these populations. The entries are arranged alphabetically and…

Describes the rapid advance of molecular genetics over the past 20 years that have accounted for the origin of mutations. This research has revealed that variation within species is much greater than Darwin postulated. (Author/MA)

In a transcript from a radio show, Nobel Prize Winner Sir Macfarlane Burnet stresses the critical need for scientists to regulate their own activities in genetic research and cites the potential danger of creating a new form of polio which might escape. (CL)

Intelligence test data collected in 1931 through 1960 on 757 identical and 1,093 fraternal male twins, from the files of the Norwegian Armed Forces, were examined for secular trends in the heritability of intelligence test scores. Only ambiguous evidence of such trends was found. (SLD)