Generality of observational skill across verbal and nonverbal modes: Literature review and experimental test

The resurgence of interest in observational skills and in the generality or specificity of those skills is credited to recent research on individual differences in abilities to decode nonverbal messages. The issues involved in identifying general and specific factors of accuracy are traced to developments in earlier research on observation and to events that shaped contemporary negativism toward observers. An experiment on observational generality, across two different observational settings and three types of observational cues illustrates how easily either bias — toward generality or specificity of skills — can be demonstrated.     

Mexican/Mexican American Adolescents and keepin' it REAL: An Evidence-Based Substance Use Prevention Program

A randomized trial tested the efficacy of three curriculum versions teaching drug resistance strategies, one modeled on Mexican American culture; another modeled on European American and African American culture; and a multicultural version. Self-report data at baseline and 14 months post-intervention were obtained from 3, 402 Mexican heritage students in 35 Arizona middle schools, including 11 control sites. Tests for intervention effects used simultaneous regression models, multiple imputation of missing data, and adjustments for random effects. Compared with controls, students in the Latino version reported less overall substance use and marijuana use, stronger intentions to refuse substances, greater confidence they could do so, and lower estimates of substance-using peers. Students in the multicultural version reported less alcohol, marijuana, and overall substance use. Although program effects were confined to the Latino and multicultural versions, tests of their relative efficacy compared with the non-Latino version found no significant differences. Implications for evidence-based practice and prevention program designs are discussed, including the role of school social workers in culturally grounded prevention.     

Early Indicators of Male Reproductive Toxicity

Longitudinal data were analyzed for seminal characteristics of rhesus monkeys and beagles. The monkeys were exposed to DBCP; the beagles were exposed to acute or chronic whole body gamma irradiation. The semen was analyzed for volume and sperm concentration. Sperm were measured for percent motility, swimming speed, and head dimensions. Abnormalities of the sperm tail were also noted. All treatments resulted in measurable effects on the semen parameters. Sperm production, as evaluated by seminal sperm concentration or total sperm numbers in the ejaculate, was as informative of testicular toxicity as any other parameter or combination of parameters. A consistent finding was that changes in sperm output occurred concomitantly with changes in sperm motility.     

Searching Data for Predictive Variables: A Set-Theoretical Approach*

A common task of the scientific investigator is to search out factors which will predict the presence or absence of some variable attribute in which he is interested. Procedures for such searches are spelled out in Mill's famous canons of discovery. A set-theoretical analysis of these, however, discloses unnecessary inconsistency and difficulty, and leads to a single canon which extracts maximal information concerning causal factors from arbitrary sequences of cases, while reminding the researcher of the limitations of finite samples of both subjects and measures.     

Food Pantries and the Populations They Serve: Strange Bedfellows or Strategic Partners?*

Although it is often assumed that food pantries are managed by middle‐class directors whose social background differs significantly from that of their target populations, no systematic empirical evidence concerning this issue exists to date. Moreover, scholarship has yet to explore the extent to which the presumably distinctive social positions of pantry directors and clients might result in the stigmatization of poverty, social welfare programs, and the poor by agency directors. Drawing on insights from attribution theory, this study seeks to shed light on demographic and attitudinal differences between pantry directors and food‐needy persons. The study begins by comparing the demographic characteristics of food pantry directors in a two‐state region of the South (Alabama‐Mississippi) with those of the food‐needy population in the region. It then moves on to contrast attitudinal disparities between these directors and food‐needy persons related to such issues as the causes of poverty, the effects of social welfare programs, and the character of those who utilize food assistance programs. Noteworthy differences in race, education, and religiosity emerge when comparing directors with the populations they serve; however, directors did not differ markedly from their potential clients in key social attitudes. When asked specifically about food pantry clients, directors responded with a mix of sympathy and suspicion. While a substantial portion of directors attribute poverty to structural causes, a significant number also characterize clients seeking food assistance as possibly having unsavory motivations for doing so. The study concludes with a discussion of the implications of these findings.     

The Experiences of Sleep Disruption in Families of Technology‐dependent Children Living at Home

This paper examines the sleep disruption experienced by 36 families of technology‐dependent children living at home in the United Kingdom. The paper begins with an overview of the qualitative study in which parents' experiences of sleep disruption emerged as a major theme. We then describe the nature of and reasons for the sleep disruption, the help families received with care overnight, and the effects of sleep disruption on parents in particular. This is followed by discussion of the implications of the findings for policy and practice as well as future research.