Sixteen families expecting their second child at the beginning of the study were observed over a period of two years in their homes, in order to conceptualize changes in family structure as it changes from a triadic to a tetradic (group or arrangement of four) form. (MP)

The effects of sibling death on 33 adolescents were investigated through focused interviews that gathered data on bereavement reactions, self-concept, interpersonal relationships, and ways of dealing with death. Results are discussed along with adolescents' grief symptoms, religious beliefs, and lessons learned from death. (CJ)

Provides a comprehensive contemporary summary of the world literature on IQ correlations between relatives. A profile of average correlations consistent with a polygenic mode of inheritence is revealed from a summary of 111 studies, although a marked degree of heterogeneity of the correlations within familial groupings is also found. (CS)

Four factors are identified as crucial in facilitating the emotional adjustment of a child in remarriage: (1) the preremarriage adjustment of the child; (2) the age of the child at the time of remarriage; (3) the stepparent-stepchild relationship; and (4) the presence of stepsiblings. (Author)

Investigates the roles and problems of siblings of incest victims, describes the dynamics of the incestuous family, and identifies some behavior problems of children whose siblings were incest victims. Data from two siblings' lives are presented to illustrate points. (Author/DB)

Explores the impact of having a schizophrenic sibling. Subjects functioned at high levels of adjustment. Separated from their families, there followed a period of reinvolvement, including responsibility for the ill sibling. Younger siblings expressed guilt over being well, whereas older siblings expressed guilt over earlier sibling rivalry.…

When older siblings were present with infants and their mothers in the backyard of a private home, the infants went further from their mothers, traversed a larger area of the yard, left their mothers more quickly, and stayed away longer. (RH)

Hereditability of the two second order intelligence factors gc and gf was studied using the MAVA design in 470 brothers reared together, 94 identical twins reared together, 124 fraternal twins reared together, and 1543 boys (fluid intelligence) and 2579 (crystallized intelligence) unrelated. All were in the 12-18 age range. (Author)

Directs the reader to sibling gender relationships. Patterns of intimacy in brother-brother and brother-sister relationships are identified. Masculine gender role patterns were expressed more frequently than classic sibling rivalry. Sisters, not mothers, were discovered to be the primary socializing agent for some of men's intimate relationships…

Presents a study of 24 deviant and nondeviant boys between the ages of 6 and 11 years. (CM)

Examined the conversational patterns of older children with their younger siblings. Findings reveal that the siblings of disabled children appeared to be less conversationally sensitive with their brothers and sisters than the siblings of nondisabled children. (34 references) (Author/CK)

Evidence for the genetic basis of autism is offered, as is evidence that environmental determinants also play a role. Research involving the Human Genome Project, using linkage analysis with affected autistic sibling pairs to identify polymorphic marker genes, is described and proposed. (DB)

For pairs of full siblings, half-siblings, and cousins, analyzed maternal ratings of children's behavior problems at three times between ages 4 and 10. Found that nonshared environmental influences were substantial at each age but did not contribute to continuities in children's problem behaviors. Results favor a liability model that relates…

Obtained self-reports from 40 couples from gender-tilted families, families which have several children of same sex. Parents of boys reported higher levels of family conflict and lower satisfaction with their families than did parents of girls. Parents of male-tilted families expressed more masculine sex-role orientations, greater personal…

When sibling pairs interacted with unrelated mothers, facial and vocal affect directed to the difficult child in the pair was more dysphoric than that directed to the other. This was particularly the case among women who attributed relatively high control to children and low control to adults. A similar relation between affect and attributions was…