Review Essay: (Mis-)Reading/(Re-)Reading Marx

Qualitative Sociology -     

Gesture in Instruction: Evidence from Live and Video Lessons

Previous studies have shown that teachers’ gestures are beneficial for student learning. In this research, we investigate whether teachers’ gestures have comparable effects in face-to-face live instruction and video-based instruction. We provided sixty-three 7–10 year old students with instruction about mathematical equivalence problems (e.g., 3 + 4 + 5 = __ + 5). Students were assigned to one of four experimental conditions in a 2 × 2 factorial design that varied (1) instruction medium (video vs. live), and (2) instruction modality (speech vs. speech + gesture). There was no main effect of medium: The same amount of learning occurred whether instruction was done live or on video. There was a main effect of modality: Speech instruction accompanied by gesture resulted in significantly more learning and transfer than instruction conveyed through speech only. Gesture’s effect on instruction was stronger for video instruction than live instruction. These findings suggest that there may be a limit to gesture’s role in communication that results in student learning.     

The Missing Baby Bust: The Consequences of the COVID-19 Pandemic for Contraceptive Use,Pregnancy, and Childbirth Among Low-Income Women

Population Research and Policy Review - Multiple episodes in US history demonstrate that birth rates fall in response to recessions. However, the 2020 COVID-19 recession differed from earlier...     

Sex-dependent associations between daily physical activity and leg exercise blood pressure responses

The authors examined interindividual and sex-specific variation in systolic (SBP) and diastolic (DBP) blood pressure responses to graded leg-extension exercise in healthy older (60-78 yr) women (n = 21) and men (n = 19). Maximal oxygen uptake (VO2max), body composition, physical activity (accelerometry), and vascular function were measured to identify predictors of exercise BP. Neither VO2max nor activity counts were associated with the rise in SBP or DBP during exercise in men. The strongest predictors of these responses in men were age (SBP: r2 = .19, p = .05) and peak exercise leg vasodilation (DBP: r2 = -.21, p < .05). In women, the modest relationship observed between VO2max and exercise BP was abolished after adjusting for central adiposity and activity counts (best predictors, cumulative r2 = .53, p < .05, for both SBP and DBP). These results suggest that determinants of variation in submaximal exercise BP responses among older adults are sex specific, with daily physical activity influencing these responses in women but not men.     

Fathers' Early Emotion Talk: Associations With Income,Ethnicity, and Family Factors

Contextual, mother‐, child‐, and father‐level variables were examined in association with fathers' emotion talk to infants during a shared picture book activity, in an ethnically diverse, low‐income sample (N = 549). Significant main effects included the rate of emotion talk from fathers' romantic partners (i.e., the infant's mother), infant attention and distress, and sensitive parenting. Significant interactions were also found. Higher income African American fathers referred to negative emotions more than non‐African American higher income fathers. In addition, African American fathers who demonstrated more negative and intrusive parenting referred to positive emotions more than non‐African American fathers who demonstrated negative and intrusive parenting. Our findings support family systems theory and, specifically, the interdependence of individuals' behaviors within the family unit. Interaction effects are discussed with respect to cultural variation in beliefs about parenting behaviors and the cultural experience of African Americans, including the Black cultural experience and the minority experience.     

Child Poverty Among Racial Minorities and Immigrants: Explaining Trends and Differentials*

Objective. This article examines the effects of changing family structure (including cohabitation) and maternal employment during the 1990s on child poverty rates across America's diverse racial and ethnic groups. Unlike most previous studies focused on broad pan‐ethnic groups, our analyses examine children distinguished by race/ethnicity, immigrant generation, and national origin (e.g., Mexican, Japanese, Middle Eastern, among others). Methods. The analyses, using methods of demographic standardization, are based on data from the 1990 and 2000 Public Use Microdata Samples of the U.S. Decennial Censuses. Results. Child poverty rates declined broadly across population groups in the 1990s. Increasing maternal employment during the 1990s, rather than changing family structure, accounted for the largest share (nearly 40 percent) of the recent decline in child poverty rates. Changes in family structure played a minor role in reducing child poverty for most of the 25 groups considered in this article. Differences in family structure accounted for a large part of observed child poverty differences between minority groups. Conclusions. Rapid increases in maternal employment during the 1990s provided a hedge against rising child poverty and a route to economic self‐sufficiency for growing shares of single mothers and their children.     

Chinese Children Among the Poor: Comparing U.S. Natives with Immigrants from Taiwan, Mainland China, and Hong Kong

Research on Chinese Americans often centers on successful economic incorporation in American society (e.g., “model minority”). Unfortunately, previous research has overlooked the changing economic circumstances of native- and foreign-born Chinese children, despite the fact that Chinese children living in America are diverse in socioeconomic status and geographic origin. In this paper, we use data from the 1990 and 2000 censuses to compare levels and changes in child poverty rates among U.S.-born Chinese and immigrants from Taiwan, Mainland China, and Hong Kong, and to investigate how changes in maternal employment and family structure (including cohabitation) contributed to the decline in poverty rates in the 1990s. Compared to other Asian Americans and non-Asians, Chinese children in the U.S. are less likely to live in poverty, thanks in part to more married-couple families and higher levels of maternal employment. Yet, child poverty rates vary among Chinese American subpopulations—being lowest for children of U.S.-born Chinese and highest for children of mainland-born Chinese. In addition, we find that poverty among U.S.-born and Taiwan-born Chinese would have been even lower had their rates of divorce and cohabitation had been similar to those for mainland-born and Hong Kong-born Chinese.     

Indirect Effects of Maternal Sensitivity on Infant Emotion Regulation Behaviors: The Role of Vagal Withdrawal

The potential indirect effect of observed maternal sensitivity at 5 months on the development of infants' behavioral regulation of emotion from 5 to 10 months (i.e., distraction and maternal‐orientation behaviors) via infant's vagal withdrawal was investigated (N = 230). Results indicated that maternal sensitivity at 5 months was not directly associated with behavioral regulation at 10 months. However, greater maternal sensitivity at 5 months was associated with greater vagal withdrawal at 10 months, after controlling for vagal withdrawal at 5 months. Further, vagal withdrawal at 10 months was associated with greater orientation toward the mother at 10 months, after controlling for 5‐month orientation behaviors. The indirect effect of maternal sensitivity on maternal‐orientation behaviors was significant, suggesting that infant's vagal withdrawal may be one potential mechanism through which maternal sensitivity is related to behavioral regulation.     

Cognitive-ergonomics and instructional aspects of e-learning courses

This paper presents an analysis of cognitive-ergonomic aspects of e-learning courses, offered by an organism from Brazilian Public Administration. The Cognitive Ergonomic studies conductive and cognitive aspects concerning to the relation between human, physics elements and social elements of the work space. From that usability aspects were evaluated by these points: i) visualization; ii) text comprehension lecture; iii) memory; iv) interface; v) instructional design; and vi) attention and learning. That survey is characterized as having been applied using the following techniques: (1) bibliographic survey, (2) field survey and (3) analysis of the documents. It was chosen the semi-structured questionnaire as the main method of data collection. About the interacting with artifacts, the interface of the courses is classified as direct engagement, because it allows the user to get the feeling that acts directly on the objects. Although the courses are well-structured they have flaws that will be discussed below. Even with these problems, the courses have a good degree of usability.