Population size and suicide in U.S. cities: a static and dynamic exploration

The relationship between city population size and suicide rates rarely has been examined directly, though scholars often assume such a relationship exists based on studies of the association between suicide rates and urbanization (percent of the population living in cities) in various social contexts. In an effort to determine the basic association between suicide rates and city population size, we analyze data for four time points, 1960, 1970, 1980, and 1990, using a random sample of U.S. cities with 10,000 or more population in 1960. In addition, we conduct a time series analysis of change in population size and change in suicide rates over a two decade period. Results indicate that an association between population and suicide is atypical, and even when observed is highly sensitive to methodological specifications. The results call into question the notion that larger city population size is conducive to suicide as well as the assumption that studies of suicide and urbanization can substitute for studies of suicide and city population size.     

THREE VERSUS SIX REREADINGS OF PRACTICE PASSAGES

Although the literature clearly demonstrates that repeated readings result in immediate effects on students' performance on the intervention materials as well as long‐term benefits, data are less promising regarding its immediate generalization effects to similar materials. Using an alternating treatments design, the current study evaluated the effects of a multicomponent repeated reading intervention on generalization passages after students had read a passage three versus six times. Results indicated improvements in fluency as a result of both interventions, with slightly greater maintenance effects when students were given six opportunities to read passages.     

Culture and the body: East-West differences in visceral perception

This research investigated cross-cultural differences in the accuracy of individuals' perceptions of internal visceral states. We conducted 4 studies to test the hypothesis that Asians are less sensitive to internal physiological cues relative to European Americans. Studies 1 and 2 assessed cultural differences in visceral perception via tests of misattributions of arousal: Study 1 involved false heart rate feedback during an emotionally evocative slideshow and examined subsequent self-reported affective changes; Study 2 manipulated apparent physiological arousal and measured its effects on attraction via an immersive virtual environment. Study 3 directly assessed visceral perception using a heartbeat detection task. All 3 studies found Asians to be less viscerally perceptive than European Americans. Study 4 examined one possible cultural mechanism for the observed difference and found evidence for contextual dependency as a mediator of the culture-visceral perception link.     

The role of transitions to new age groups in the development of institutionalized children

Children in two institutions in St. Petersburg (Russian Federation) experienced ward transitions, one in which caregivers were trained to provide sensitive, responsive caregiving and one that conducted business as usual. A third institution eliminated transitions, received the same training, and implemented a variety of structural and employment changes designed to promote improved caregiver–child interactions and relationships. While the no‐transition comprehensive intervention group of children steadily improved in Battelle Developmental Inventory (LINC Associates, 1988 ) scores across all age intervals, the children in the institution who encouraged some positive caregiver–child interactions improved before and after, but not during, an age period that involved a transition. In contrast, the no‐treatment group displayed no developmental changes across any age period with or without a transition. These results suggest that the common institutional practice of ward transitions to new peers and caregivers is potentially disruptive to infants' and toddlers' general development, but primarily in a context in which some degree of caregiver–child sensitive and responsive interactions are encouraged.