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A new study has examined the relationship between outdoor air pollution levels and students' cognitive performance in Brazil.The findings of the study were published in the 'Journal of the Association of Environmental and Resource Economists'.In the study, authors Juliana Carneiro, Matthew A Cole and Eric Strobl used Brazilian data on concentrations of ozone (O3) and particulate matter (PM10) and a data set of students' scores to examine the impact of air pollution on academic performance in national examinations.The air pollution data focuses on Rio de Janeiro and Sao Paulo -- Brazil's most industrialised states -- using air pollution and weather monitoring station data to build a unique data panel from 2015-17.The authors constructed individual-level panel data for the two days of exams across three years and applied student fixed effects to address potential endogeneity concerns."In addition, we take advantage of plausibly exogenous spatial and temporal variation in PM10 across municipalities in the states of Rio de Janeiro and Sao Paulo and utilise an instrumental variable approach based on wind direction," they noted.The findings suggest that an increase of 10 micrograms per cubic meter (mg/m3) of PM10 on the day of the examination decreases students' scores by 6.1 points (8 per cent SD)."Even when including a more flexible measure of our treatment that is utilising a dummy variable to account for the days in which PM10 exceeded the WHO's acceptable threshold, our findings still point to negative effects of air pollution on cognitive performance during examinations," they noted.Placebo tests, sensitivity checks, and falsifications tests reinforced the main findings: evidence of a link between air pollution and exam performance.Consistent with previous studies, the authors also find evidence that the effect of air pollution on exam performance appears to affect males more adversely than females."Our results also suggest that poorer students may be more susceptible to air pollution than wealthier exam takers," they wrote."Our findings provide plausible evidence to suggest that cognitive performance may be hindered by poor air quality, but unequally so," they added.( With inputs from ANI )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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Technology :Study examines effects of air pollution on students' cognitive performance

A new study has examined the relationship between outdoor air pollution levels and students' cognitive performance in Brazil. ...