The basic differences between the sexes are, after all, genetic rather than social or cultural. Article investigated the implications of this fact for teachers and learners. (Editor/RK)

Ethical issues which surround the reproductive technologies being used to assist infertile couples include social impact, surrogacy, access to service and confidentiality. The use of reproductive technologies does not appear to cause harm, and often does a lot of good for the family and society. Surrogacy could be a valuable tool for the infertile…

Author focused on differences between whites and negroes in the United States and more generally on racial variation in man. (Author/RK)

Presented is the case history of a boy with a previously unreported pattern of upper limb deformities and minor craniofacial anomalies. (DB)

The case is presented of a young boy with a rare chromosome disorder involving an interstitial deletion on chromosome 16 (16q11.2q13). Background information on chromosome disorders is presented along with a review of previous findings about the developmental consequences of chromosome 16q deletions. The case description illustrates the…

Presents a few pertinent facts related to contrasting conditions in Mendel's experiment. The lack of emphasis regarding normal vs abnormal conditions or the origins of the abnormal type is questioned. Suggested contrasts are given. (EB)

Paper presented at the Merrill-Palmer Institute on Research and Training of Infant Development (Detroit, Mich., Feb. 15-17, 1968).

To account for observed sex differences on tasks such as the rod and frame test, the embedded figures test, and other related measures, the theory is advanced that a sex-linked recessive gene mediates or facilitates certain performances. This assumption is coupled with the concept of "a mixture of density functions" to provide a…

INTELLIGENCE IS COMPOSED OF SIX INDEPENDENT ABILITIES--NUMERICAL, SPATIAL, REASONING, TWO VERBAL ABILITIES (VOCABULARY SIZE AND WORK FLUENCY), AND MEMORY. THE INDEPENDENCE OF THESE ABILITIES ARE EXPLORED BY RESEARCH STUDIES WHICH ARE DISCUSSED IN SIX CRITERIA CATEGORIES--(1) DIFFERENTIAL PREDICTION OF SUCCESS, (2) FACTOR STABILITY ACROSS AGE…

Designed primarily for parents of children with genetic disorders, the booklet provides information about parent groups. Part 1 describes parent groups, including organization, types of groups, and methods of outreach. A sample letter of invitation to attend a parent group and an outline of the initial meeting is included along with a list of…

Presented are two papers from a panel discussion on prenatal diagnosis and genetic counseling with families. D. Blackston (director of the Developmental Evaluation Clinic, Decatur, Georgia) points out that a concise family history, pregnancy and birth data, developmental history, careful physical examination, and appropriate laboratory studies are…