Similarity breeds connection. This principle—the homophily principle—structures network ties of every type, including marriage, friendship, work, advice, support, information transfer, exchange, comembership, and other types of relationship. The result is that people's personal networks are homogeneous with regard to many sociodemographic, behavioral, and intrapersonal characteristics. Homophily limits people's social worlds in a way that has powerful implications for the information they receive, the attitudes they form, and the interactions they experience. Homophily in race and ethnicity creates the strongest divides in our personal environments, with age, religion, education, occupation, and gender following in roughly that order. Geographic propinquity, families, organizations, and isomorphic positions in social systems all create contexts in which homophilous relations form. Ties between nonsimilar individuals also dissolve at a higher rate, which sets the stage for the formation of niches (localize...

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Birds of a Feather: Homophily in Social Networks

It is hypothesized that collective efficacy, defined as social cohesion among neighbors combined with their willingness to intervene on behalf of the common good, is linked to reduced violence. This hypothesis was tested on a 1995 survey of 8782 residents of 343 neighborhoods in Chicago, Illinois. Multilevel analyses showed that a measure of collective efficacy yields a high between-neighborhood reliability and is negatively associated with variations in violence, when individual-level characteristics, measurement error, and prior violence are controlled. Associations of concentrated disadvantage and residential instability with violence are largely mediated by collective efficacy.

Neighborhoods and Violent Crime: A Multilevel Study of Collective Efficacy

This article describes the development of a new sex-role inventory that treats masculinity and femininity as two independent dimensions, thereby making it possible to characterize a person as masculine, feminine, or "androgynous" as a function of the difference between his or her endorsement of masculine and feminine personality characteristics. Normative data are presented, as well as the results of various psychometric analyses. The major findings of conceptual interest are: (a) the dimensions of masculinity and femininity are empirically as well as logically independent; (6) the concept of psychological androgyny is a reliable one; and (c) highly sex-typed scores do not reflect a general tendency to respond in a socially desirable direction, but rather a specific tendency to describe oneself in accordance with sex-typed standards of desirable behavior for men and women. Both in psychology and in society at large, masculinity and femininity have long been conceptualized as bipolar ends of a single continuum; accordingly, a person has had to be either masculine or feminine, but not both. This sex-role dichotomy has served to obscure two very plausible hypotheses: first, that many individuals might be "androgynous" ; that is, they might be both masculine and feminine, both assertive and yielding, both instrumental and expressive—depending on the situational appropriateness of these various behaviors; and conversely, that strongly sex-typed individuals might be seriously limited in the range of behaviors available to them as they move from situation to situation. According to both Kagan (1964) and Kohlberg (1966), the highly sex-typed individual is motivated to keep his behavior consistent with an internalized sex-role standard, a goal that he presumably accomplishes by suppressing any behavior that might be con

The measurement of psychological androgyny.

A broader approach to research in hu- j man development is proposed that focuses on the pro- \ gressive accommodation, throughout the life span, between the growing human organism and the changing environments in which it actually lives and grows. \ The latter include not only the immediate settings containing the developing person but also the larger social contexts, both formal and informal, in which these settings are embedded. In terms of method, the approach emphasizes the use of rigorousj^d^igned exp_erjments, both naturalistic and contrived, beginning in the early stages of the research process. The chang- ing relation between person and environment is con- ceived in systems terms. These systems properties are set forth in a series of propositions, each illus- trated by concrete research examples.

Toward an experimental ecology of human development.

This article explores the possibility that romantic love is an attachment process--a biosocial process by which affectional bonds are formed between adult lovers, just as affectional bonds are formed earlier in life between human infants and their parents. Key components of attachment theory, developed by Bowlby, Ainsworth, and others to explain the development of affectional bonds in infancy, were translated into terms appropriate to adult romantic love. The translation centered on the three major styles of attachment in infancy--secure, avoidant, and anxious/ambivalent--and on the notion that continuity of relationship style is due in part to mental models (Bowlby's "inner working models") of self and social life. These models, and hence a person's attachment style, are seen as determined in part by childhood relationships with parents. Two questionnaire studies indicated that relative prevalence of the three attachment styles is roughly the same in adulthood as in infancy, the three kinds of adults differ predictably in the way they experience romantic love, and attachment style is related in theoretically meaningful ways to mental models of self and social relationships and to relationship experiences with parents. Implications for theories of romantic love are discussed, as are measurement problems and other issues related to future tests of the attachment perspective.

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Romantic Love Conceptualized as an Attachment Process

The Psychology of Sex Differences

Socialization In The Context Of The Family: Parent-Child Interaction

This article argues that behavioral differentiation of the sexes is minimal when children are observed or tested individually Sex differences emerge primarily in social situations, and their nature varies with the gender composition of dyads and groups Children find same-sex play partners more compatible, and they segregate themselves into same-sex groups, in which distinctive interaction styles emerge These styles are described As children move into adolescence, the patterns they developed in their childhood same-sex groups are carried over into cross-sex encounters in which girls' styles put them at a disadvantage Patterns of mutual influence can become more symmetrical in intimate male-female dyads, but the distinctive styles of the two sexes can still be seen in such dyads and are subsequently manifested in the roles and relationships of parenthood The implications of these continuities are considered Language: en

Gender and relationships. A developmental account.

Current findings on parental influences provide more sophisticated and less deterministic explanations than did earlier theory and research on parenting. Contemporary research approaches include (a) behavior-genetic designs, augmented with direct measures of potential environmental influences; (b) studies distinguishing among children with different genetically influenced predispositions in terms of their responses to different environmental conditions; (c) experimental and quasi-experimental studies of change in children's behavior as a result of their exposure to parents' behavior, after controlling for children's initial characteristics; and (d) research on interactions between parenting and nonfamilial environmental influences and contexts, illustrating contemporary concern with influences beyond the parent-child dyad. These approaches indicate that parental influences on child development are neither as unambiguous as earlier researchers suggested nor as insubstantial as current critics claim.

Eleanor E. Maccoby

Papers

The Psychology of Sex Differences

Socialization In The Context Of The Family: Parent-Child Interaction

Gender and relationships. A developmental account.

Contemporary research on parenting: The case for nature and nurture.

Patterns of Child Rearing.