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81.
Theodora Koumoutsakis Ruth Breckinridge Church Martha W. Alibali Melissa Singer Saba Ayman-Nolley 《Journal of Nonverbal Behavior》2016,40(4):301-315
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. 相似文献
82.
Bailey Martha J. Bart Lea Lang Vanessa Wanner 《Population research and policy review》2022,41(4):1549-1569
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... 相似文献
83.
Sex-dependent associations between daily physical activity and leg exercise blood pressure responses 总被引:1,自引:0,他引:1
Gonzales JU Grinnell DM Kalasky MJ Proctor DN 《Journal of aging and physical activity》2011,19(4):306-321
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. 相似文献
84.
85.
Patricia Garrett‐Peters Roger Mills‐Koonce Stephanie Zerwas Martha Cox Lynne Vernon‐Feagans The Family Life Project Key Investigators 《Journal of marriage and the family》2011,73(2):335-353
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. 相似文献
86.
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. 相似文献
87.
This paper discursively analyses advocates' explanations of asylum seeking in the 2001 Australian parliamentary debates. Previous research has mapped the negative discourses used to present asylum seekers as economic migrants ‘taking advantage’ of soft laws. This paper analyses how advocates oppose this rhetoric, re‐categorising asylum seekers as potential refugees, and establishing Australia as legally and morally responsible for providing protection. This paper examines three influences shaping advocates' arguments: opposing anti‐asylum seeker rhetoric; theories of the formation of anti‐asylum seeker public opinion; and the parliamentary and wider liberal democratic intellectual political framework. It then analyses four extracts taken from political speeches in the parliament, focussing on the rhetorical strategies used to counter a pervasive ‘culture of disbelief’ against asylum seekers. 相似文献
88.
This article is intended to acquaint the reader with the concept of vengeance. Conceptualized as the intense, compelling wish or intention to get even, right a wrong, or avenge an injury, vengeance is best understood on a continuum from innocuous retaliatory fantasies/actions on one end of the continuum to meeting out of death and destruction on the other end. This article identifies various manifestations of vengeance, discusses theoretical formulations related to affects in general and vengeance, in particular, and presents a series of case vignettes which highlight the adaptive and maladaptive function of this psychological phenomenon. 相似文献
89.
90.
This study addresses the challenges that human service administrators face in maintaining and moving their organizations forward. Twelve leadership challenge dimensions are identified, variations in these challenges across agencies and administrators are explored, and the implications of these findings for leadership development programs targeted at human service administrators are discussed. 相似文献