Heat and Learning

2020 ◽  
Vol 12 (2) ◽  
pp. 306-339 ◽  
Author(s):  
R. Jisung Park ◽  
Joshua Goodman ◽  
Michael Hurwitz ◽  
Jonathan Smith

We demonstrate that heat inhibits learning and that school air conditioning may mitigate this effect. Student fixed effects models using students who retook the PSATs show that hotter school days in the years before the test was taken reduce scores, with extreme heat being particularly damaging. Weekend and summer temperatures have little impact, suggesting heat directly disrupts learning time. New nationwide, school-level measures of air conditioning penetration suggest patterns consistent with such infrastructure largely offsetting heat’s effects. Without air conditioning, a 1°F hotter school year reduces that year’s learning by 1 percent. Hot school days disproportionately impact minority students, accounting for roughly 5 percent of the racial achievement gap. (JEL I21, I24, J15, Q54)

2011 ◽  
Vol 47 (5) ◽  
pp. 695-727 ◽  
Author(s):  
Jeannie Myung ◽  
Susanna Loeb ◽  
Eileen Horng

Purpose: In light of the difficulty many districts face finding quality principal candidates, this article explores an informal recruitment mechanism of teachers to become principals, which the authors call tapping. The authors assess the extent to which current teachers are being approached by school leaders to consider leadership and whether this tapping prompts these teachers to consider pursuing leadership positions. Research Design: This study uses survey and administrative data on teachers and principals from the Miami-Dade County Public Schools from the 2007–2008 school year. The authors describe the extent to which principals tap teachers to become school leaders. They use multiple regression with and without school fixed effects to model which teachers are most likely to be tapped and which principals are most likely to tap teachers. They also estimate the extent to which tapping is effective at motivating teachers to become school leaders. Findings: A vast majority of principals report having been tapped by their own principal when they were teachers. The authors find that principals tend to tap teachers who feel better equipped to take on the principalship and who have more school-level leadership experience, but they also disproportionately tap teachers who are male and share their ethnicity. Conclusions: The findings provide evidence that principals are capable of effectively identifying and encouraging teachers with strong leadership potential to enter the principal pipeline, although additional training and a succession management plan may help ensure that teachers are selected based on clear leadership competencies.


2019 ◽  
Vol 121 (11) ◽  
pp. 1-30
Author(s):  
Elizabeth Covay Minor ◽  
Guan K. Saw ◽  
Kenneth Frank ◽  
Barbara Schneider ◽  
Kaitlin T. Torphy

Background/Context All organizations face turnover in their workforce; however, in schools high turnover can interfere with the effectiveness and efficiency of the school. While past research has examined school-related factors linked to teacher turnover, few studies have examined how external contextual factors are related to teacher turnover. This study examines the role of two external contextual factors in teacher turnover: economic downturns and changes in state curricular policy (the Michigan Merit Curriculum [MMC]). Purpose/Objective/Research Question/Focus of Study This study asks the extent to which the economic crisis of 2009 and the implementation of the MMC are related to school-level teacher turnover rates and whether those relationships vary by school locale and within the school year. Population/Participants/Subjects The data include full-time high school teachers in the state of Michigan aggregated to the school level. Research Design Using eight years of statewide longitudinal data from Michigan, the study employs school fixed effects models to account for possible differences in unobservable school characteristics that are constant over time and may be related to teacher turnover. The study examines teacher turnover at both the mid-year and the end of the year as teachers leave schools at various points during the school year. Additionally, this study considers how turnover is experience differentially by urbanicity. Findings/Results Between 3.2% and 15.5% of teachers left their school over the eight-year period. The rates of turnover varied by the time of the school year with more teachers leaving at the end of the year than during mid-year. There was a significant increase in teacher turnover rates around the announcement of the MMC as well as the economic downturn. While all locations were impacted by the announcement of the MMC, the largest amount of turnover occurred in urban areas and the lowest for suburban areas. In terms of the economic downturn, towns were impacted the most, followed by rural and suburban schools. Urban areas did not see a significant increase in teacher turnover related to the recession. Conclusions/Recommendations The authors conclude that external contextual factors are related to increases in teacher turnover independent of each other. How these factors relate to teacher turnover does depend on school locale. While this study was based in Michigan, all states have their own policy and economic pressures to consider in related to school-level decision making and teacher turnover.


2021 ◽  
pp. 095001702110042
Author(s):  
Aleksander Å Madsen ◽  
Idunn Brekke ◽  
Silje Bringsrud Fekjær

This study explores women’s attrition from male-dominated workplaces based on Norwegian public administrative records, covering individuals born 1945–1983, in the period between 2003 and 2013. It examines sex differences in rates of attrition and tests the significance of two commonly proposed explanations in the literature, namely the degree of numerical minority status and motherhood. It also investigates whether these explanations vary by occupational class. Selection into male-dominated workplaces is accounted for by using individual fixed effects models. The results show that attrition rates from male-dominated workplaces are considerably higher among women than among men. Moreover, the risk of female attrition to sex-balanced workplaces increases, regardless of occupational class, with increases in the percentage of males. Childbirth is associated with an increased risk of attrition to female-dominated workplaces, while having young children (⩽ 10 years old) lowered the risk. This association, however, was primarily evident among working-class women in manual occupations.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Xujia Liu ◽  
Zehua Jiang ◽  
Guihua Zhang ◽  
Tsz Kin Ng ◽  
Zhenggen Wu

Abstract Background Genetic association of uncoupling proteins (UCPs) variants with the susceptibility of diabetic retinopathy (DR) in diabetes mellitus (DM) patients has been reported but with controversy. Here we aimed to conduct a meta-analysis to confirm the association of different UCPs variants with DR. Methods Three databases (Medline Ovid, Embase Ovid and CENTRAL) were applied in the literature search. Five genetic models, including allelic, homozygous, heterozygous, dominant and recessive models, were evaluated. Odds ratios (OR) were estimated under the random or fixed-effects models. Subgroup analyses, publication bias and sensitivity analyses were also conducted. Results Eleven studies on 2 UCPs variants (UCP1 rs1800592 and UCP2 rs659366) were included. Our meta-analysis showed that UCP1 rs1800592 was not associated with DR in type-2 DM patients, and UCP2 rs659366 also showed no association with DR. In the subgroup analyses on the stage of DR, allele G of UCP1 rs1800592 significantly increased the susceptibility of proliferative diabetic retinopathy (PDR) in type-2 DM patients in the allelic (OR = 1.26, P = 0.03) and homozygous models (OR = 1.60, P = 0.04). Subgroup analysis on ethnicity did not found any significant association of rs1800592 and rs659366 with DR. Conclusion Our meta-analysis confirmed the association of UCP1 rs1800592 variant with PDR in patients with type-2 DM, suggesting its potential as a genetic marker for PDR prediction in population screening.


2021 ◽  
pp. 001041402199717
Author(s):  
Charles T. McClean

How can incumbent governments benefit when they control the timing of elections? The conventional wisdom is that incumbents gain an advantage by timing elections to coincide with favorable economic conditions. An alternative mechanism that has received less attention is the element of surprise: the incumbent’s ability to exploit the opposition’s lack of election preparedness. I theorize and empirically test this surprise mechanism using candidate-level data from Japanese House of Representatives elections (1955–2017). The results show that in surprise elections, opposition parties recruit fewer, lower-quality candidates, spend less money campaigning, coordinate their candidates less effectively, and ultimately receive fewer votes and seats. Evidence from fixed effects models and exogenously timed by-elections further suggest that surprise matters more in shorter, competitive election campaigns and helps incumbents more with confronting inter-party as opposed to intra-party electoral competition. These findings add to our understanding of how strategic election timing can undermine electoral accountability.


10.3982/qe59 ◽  
2011 ◽  
Vol 2 (2) ◽  
pp. 211-249 ◽  
Author(s):  
Rachel Griffith ◽  
Sokbae Lee ◽  
John Van Reenen

2021 ◽  
Vol 123 (4) ◽  
pp. 1-36
Author(s):  
Jeremy Singer ◽  
Ben Pogodzinski ◽  
Sarah Winchell Lenhoff ◽  
Walter Cook

Background/Context Chronic absenteeism has received increased attention from educational leaders and policy makers, in part because of the association between attendance and important student outcomes. Student attendance is influenced by a range of student-, school-, and community-level characteristics, suggesting that a comprehensive and multilayered approach to addressing chronic absenteeism is warranted, particularly in high-poverty urban districts. Given the complexity of factors associated with chronic absenteeism, we draw from ecological systems theory to study absenteeism in Detroit, which has the highest rate of chronic absence of major cities in the country. Purpose/Research Questions We use administrative and public data to advance the ecological approach to chronic absenteeism. In particular, we ask: (1) How are student, neighborhood, and school characteristics associated with individual absenteeism? (2) How are structural and environmental conditions associated with citywide rates of absenteeism? Our study helps to fill a gap in the research on absenteeism by moving beyond a siloed focus on student, family, or school factors, instead placing them in relationship to one another and in their broader socioeconomic context. It also illustrates how researchers, policy makers, and administrators can take a theoretically informed approach to chronic absenteeism and use administrative data to conceptualize the problem and the potential routes to improving it. Research Design Using student-level administrative data on all students living and going to school in Detroit in the 2015–2016 school year, we estimate a series of multilevel logistic regressions that measure the association between student-, neighborhood-, and school-level factors and the likelihood of a Detroit student being chronically absent. We also use publicly available data to examine how macrosystemic conditions (e.g., health, crime, poverty, racial segregation, weather) are correlated with citywide rates of absenteeism in the 2015–2016 school year, and we compare Detroit with other large cities based on those conditions. Findings/Results Student-, neighborhood-, and school-level factors were significant predictors of chronic absenteeism in Detroit. Students were more likely to be chronically absent if they were economically disadvantaged, received special education services, moved schools or residences during the year, lived in neighborhoods with more crime and residential blight, and went to schools with more economically disadvantaged students and less stable student populations. Macro-level factors were also significantly correlated with citywide rates of absenteeism, highlighting Detroit's uniquely challenging context for attendance. Conclusions/Recommendations Our ecological understanding of absenteeism suggests that school-based efforts are necessary but not sufficient to substantially decrease rates of chronic absenteeism in Detroit and other high-absenteeism contexts. Policies that provide short-term relief from economic hardship and aim to reduce inequalities in the long-run must be understood as part of, rather than separate from, a policy agenda for reducing chronic absenteeism.


2018 ◽  
Vol 59 (4) ◽  
pp. 536-553 ◽  
Author(s):  
Michaela Curran ◽  
Matthew C. Mahutga

Cross-national empirical research about the link between income inequality and population health produces conflicting conclusions. We address these mixed findings by examining the degree to which the income inequality and health relationship varies with economic development. We estimate fixed-effects models with different measures of income inequality and population health. Results suggest that development moderates the association between inequality and two measures of population health. Our findings produce two generalizations. First, we observe a global gradient in the relationship between income inequality and population health. Second, our results are consistent with income inequality as a proximate or conditional cause of lower population health. Income inequality has a 139.7% to 374.3% more harmful effect on health in poorer than richer countries and a significantly harmful effect in 2.1% to 53.3% of countries in our sample and 6.6% to 67.6% of the world’s population but no significantly harmful effect in richer countries.


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