Early Social Experience and Individual Differences in Infants' Joint Attention

Fifty‐nine healthy infants were filmed with their mothers and with a researcher at two, four, six and nine months in face‐to‐face play, and in toy‐play at six and nine months. During toy‐play at both ages, two indices of joint attention (JA)—infant bids for attention, and percent of time in shared attention—were assessed, along with other behavioural measures. Global ratings were made at all four ages of infants' and mothers' interactive style. The mothers varied in psychiatric history (e.g., half had experienced postpartum depression) and socioeconomic status, so their interactive styles were diverse. Variation in nine‐month infant JA—with mother and with researcher—was predicted by variation in maternal behaviour and global ratings at six months, but not at two or four months. Concurrent adult behaviour also influenced nine‐month JA, independent of infant ratings. Six‐month maternal behaviours that positively predicted later JA (some of which remained important at nine months) included teaching, conjoint action on a toy, and global sensitivity. Other behaviours (e.g., entertaining) negatively predicted later JA. Findings are discussed in terms of social‐learning and neurobiological accounts of JA emergence.     

Development and Validation of the Sexual Contingent Self-Worth Scale

Sexual contingent self-worth (CSW) refers to self-worth that is dependent on maintaining a sexual relationship, and has not been studied previously. This novel construct may have implications for sexual, relationship, and psychological well-being, because it could affect the cognitions, affect, and behaviors of individuals in sexual relationships. The purpose of this study was to develop the Sexual Contingent Self-Worth Scale and examine its reliability and validity in community samples. Two separate online studies (N = 329 and N = 282) included men and women who were in committed, sexually active relationships. The Sexual CSW Scale was adapted from a validated measure of relationship CSW. In Study 1, participants completed the Sexual CSW Scale, whereas in Study 2, participants also responded to standardized measures of related constructs. In addition, participants completed the Sexual CSW Scale again two weeks later in Study 2. Factor analysis yielded two subscales: (a) sexual CSW dependent on positive sexual events in the relationship and (b) sexual CSW dependent on negative sexual events. Results indicated good construct validity, incremental validity, internal consistency, and test-retest reliability for the Sexual CSW Scale. This research contributes to the fields of both CSW and sexuality by introducing a novel domain of CSW.     

Has the Price of Motherhood Declined Over Time? A Cross‐Cohort Comparison of the Motherhood Wage Penalty

Several recent studies have shown a negative association between motherhood and wages. However, an analysis of change over time in the motherhood penalty has not been conducted. Using two cohorts of young women drawn from the 1975–1985 National Longitudinal Survey of Young Women and the 1986–1998 National Longitudinal Survey of Youth, we explicitly test the relationship between motherhood and wages across two cohorts and examine whether that relationship has changed. Even after controlling for unobserved heterogeneity and human capital variables, each additional child is associated with a negative effect on women's wages. Moreover, our findings suggest that the penalty has not diminished over time.     

Use of risk assessment and life cycle assessment in decision making: a common policy research agenda.

Quantitative risk assessment (RA) and life cycle assessment (LCA) are both analytical tools used to support decision making in environmental management. They have been developed and used by largely separate groups of specialists, and it is worth considering whether there is a common research agenda that may increase the relevance of these tools in decision-making processes. The validity of drawing comparisons between use of the tools is established through examining key aspects of the two approaches for their similarities and differences, including the nature of each approach and contextual and methodological aspects. Six case studies involving use of each approach in public decision making are described and used to draw out concerns about using RA and LCA in this context. The following categories of concern can be distinguished: philosophical approach of the tools; quantitative versus qualitative assessment; stakeholder participation; the nature of the results; and the usefulness of the results in relation to time and financial resource requirements. These can be distilled into a common policy research agenda focusing on: the legitimacy of using tools built on a particular perspective in decision making; recognition and role of value judgments in RA and LCA; treatment of uncertainty and variability; the influence of analytical tools in focusing attention on particular aspects of a decision-making situation; and understandability of the results for nonspecialists. It is concluded that it is time to bring together the experiences of RA and LCA specialists and benefit from cross-fertilization of ideas.