Background: Relatively little is known about the genetic architecture of childhood behavioral disorders in very young children. Method: In this study, parents completed the Infant-Toddler Social and Emotional Assessment, a questionnaire that assesses symptoms of childhood disorders, as well as socio-emotional competencies, for 822 twin pairs…

Little is known about the underlying causes and developmental patterns of stability and change in early reading abilities. In a longitudinal study of twins (n=4,291 pairs), individual differences in reading achievement assessed by teachers using U.K. National Curriculum (NC) criteria showed substantial heritabilities at ages 7, 9, and 10 years…

Articles in this issue of "Global Journal of Computer Science and Technology" include: (1) Input Data Processing Techniques in Intrusion Detection Systems--Short Review (Suhair H. Amer and John A. Hamilton, Jr.); (2) Semantic Annotation of Stock Photography for CBIR Using MPEG-7 standards (R. Balasubramani and V. Kannan); (3) An Experimental Study…

In this article, we examine the extent to which children with autism and children with learning difficulties can be discriminated from their responses to different patterns of sensory stimuli. Using an adapted version of the Short Sensory Profile (SSP), sensory processing was compared in 34 children with autism to 33 children with typical…

In the 1930s, about 2% of San Francisco's children were diagnosed as intellectually disabled and placed in special education or institutionalized. Most of the children were of Italian descent. Teachers, physicians, psychologists and social workers authorized their placement in San Francisco's special education classes, specified the training that…

This study investigated the effectiveness of different types of feedback content (elaborate versus global) and feedback timing (immediate versus delayed) for learning genetics in a web-based learning environment as a function of learners' prior knowledge. It was hypothesized that learning outcomes of students with low prior knowledge would be…

This document contains a collection of low cost labs and activities. The activities are organized into the following units: Chemistry; Microbiology; DNA to Chromosomes; Genetics; Evolution; Classification, Protist, and Fungus; Plant; Invertebrate; Human Biology; and Ecology and Miscellaneous. Some of the activities within these units include: (1)…

Attitudes concerning the Human Genome Project were reported by faculty (N=40) and students (N=66) from a liberal arts college. Positive attitudes toward the project involved privacy, insurance and health, economic purposes, reproductive purposes, genetic counseling, religion and overall opinions. Negative attitudes were expressed regarding…

Abstracts of 13 papers given at a 1983 conference on autistic children are presented: "Autism--Is There a Neurological Basis?" (G. McKhann); "The Syndrome of Autism: A Medical Model" (E. Ritvo) (full paper); "Neuropsychological Testing of Peripheral and Central Communicative Disorders" (H. Mark); "A Psychiatrist Views the Neurological Basis of the…

Describes an exercise that teaches Mendelian inheritance using human traits which students find exciting and relevant. (LS)

Describes screening systems for environmental mutagens, characteristics of the ideal screening system, characteristics of currently employed screening systems, correlative information required for decision making, and application of data to human populations. (GS)

In spring of 1998, the Biology Department at Pomona College changed from a two-semester survey introductory biology sequence to a core set of three courses, none of which is a traditional survey course. They had been wrestling for several years with a number of issues regarding the survey courses, including (1) what topics to include and exclude;…

Identifies some of the problems involved in genetic engineering and raises questions of interpersonal values involved. (PEB)

Describes a simple method for extracting bacterial DNA for use in laboratory investigations to study genetic transformation in bacteria. (BR)

Discusses the relation of technology to the green revolution, the role of plant breeders in inducing change in stagnant agriculture and the tools required by production scientists to increase yields of basic food crops in developing countries. (BR)