Households’ precautionary behaviors—the effects of the introduction of National Health Insurance in Taiwan

By reducing risk of large out-of-pocket medical expenses, comprehensive social health insurance may reduce households’ motivation to engage in precautionary behaviors such as saving, procurement of private insurance, and spousal labor-force participation. We use the natural experiment provided by the 1995 introduction of National Health Insurance in Taiwan to examine these effects, using pre-existing differences in access to health insurance (tied to the household head’s and spouse’s joint employment status) to identify the effects of increasing insurance coverage. We find that comprehensive health insurance has a statistically significant and large effect on household savings, but no significant effects on purchase of private accident insurance and spousal employment.

What have you done for me lately? Charisma attenuates the decline in U.S. presidential approval over time

Using archival data for a sample of U.S. presidents, evidence was found for a honeymoon and hangover effect in approval ratings over time. That is, presidential approval tended to be high early in the president's term and decrease over time. The effect of time on approval persisted even when military and economic indicators were included as predictors of presidential approval. More importantly, the effect of time on approval was moderated by charisma, such that charismatic leaders better maintained their approval rating over time. We take this as evidence that the honeymoon/hangover effect on presidential approval is substantively meaningful from a psychological perspective.     

The Effects of Multiple-Tact and Receptive-Discrimination Training on the Acquisition of Intraverbal Behavior

The purpose of this study was to determine whether multiple-tact training and receptive-discrimination training could be used to teach thematically related vocal intraverbals to typically developing preschool children. Multiple-tact training involved teaching a child to name both the item and the category to which the item belonged. Receptive-discrimination training consisted of teaching a child to select a picture card in the presence of a question from the experimenter regarding the item or its category. When neither of these strategies resulted in substantial increases in intraverbal responses, a typical intraverbal training protocol using tact prompts was implemented. Six typically developing children participated in the study. A multiple-baseline design across word categories was used to evaluate the effects of the three training procedures. Results indicated that both multiple-tact and receptive-discrimination training had minimal effects on the strength of the intraverbal repertoire, whereas direct intraverbal training had a more substantial effect. The results provide some evidence of the functional independence of verbal operants, as well as the independence of listener and speaker repertoires. Receptive-discrimination and multiple-tact training may have facilitated acquisition of intraverbals; however, further research is needed to assess how these repertoires might interact with each other.     

Pathways to early coital debut for adolescent girls: a recursive partitioning analysis

This study examined pathways to early coital debut among early to middle adolescent girls in the United States. In a two-year longitudinal study of 104 adolescent girls, recursive partitioning (RP) analyses were conducted to examine the specific factors that were related to engaging in first intercourse by the 10th grade among adolescent girls who had not yet engaged in sexual intercourse by the 8th grade. RP analyses identified subsamples of girls who had low, medium, and high likelihoods of engaging in early coital debut based on six variables (i.e., school aspirations, early physical intimacy experiences, depression, body objectification, body image, and relationship inauthenticity). For example, girls in the lowest likelihood group (3% had engaged in sex by the 10th grade) reported no prior experiences with being touched under their clothes, low body objectification, high aspirations to complete graduate education, and low depressive symptoms; girls in the highest likelihood group (75% had engaged in sex by the 10th grade) also reported no prior experiences with being touched under their clothes, but had high levels of body objectification. The implications of these analyses for the development of female adolescent sexuality, as well as for advances in quantitative methods, are discussed.     

Security of Attachment as a Predictor of Symbolic and Mentalising Abilities: A Longitudinal Study

The development of symbolic and mentalising abilities was examined in 33 children whose security of attachment had been assessed in infancy. It was found that securely attached children: (i) were better able to incorporate an experimenter's play suggestions into their sequences of symbolic play at 31 months; and (ii) performed better on a version of Wimmer and Perner's (1983) unexpected transfer task at age 4. There was also evidence of superior mentalising abilities among the secure group at age 5, despite no group differences being found in general cognitive ability. We suggest that these security-related differences might be related to mothers' propensity to treat their securely attached children as individuals with minds. In support of this hypothesis, mothers in the secure group adopted more sensitive tutoring strategies, and were more likely to describe their children in terms of their mental characteristics. Possible developmental pathways linking security of attachment in infancy with subsequent development were investigated using path analyses.     

Seeing Is Believing: Research on Women's Sexual Orientation and Public Policy

In this commentary, Sheila Kuehl, the first openly lesbian or gay person to be elected to the California State Legislature, addresses the interface among science, social issues, and public policy in the arena of women's sexual orientation. She emphasizes the value of scientific research and analysis in informing policy makers, identifies specific ways that social scientists can influence policy makers, and suggests areas that would benefit from continuing and expanded research.     

Effects of omitting a covariate in poisson models when the data are balanced

The authors show that for balanced data, the estimates of effects of interest and of their standard errors are unaffected when a covariate is removed from a multiplicative Poisson model. As they point out, this is not verified in the analogous linear model, nor in the logistic model. In the first case, only the estimated coefficients remain the same, while in the second case, both the estimated effects and their standard errors can change.