Long Term Impact of Childhood Exposure to Pollution on Children’s Test Scores

Abstract This paper estimates the long-term impact of childhood exposure to a preventative public health programme on adult human capital. From 1908 to 1933, local governments in the United States instituted county-level health departments (CHDs) that provided preventative health services geared towards children. This paper estimates the long-term benefits of childhood exposure to this public programme using variation in CHD location, timing and age of exposure. CHD operation before the age of 5 increases men’s later-life earnings by 2% to 5%. Exposed boys not only perform better than later- and never-treated groups, but, after adding household fixed effects, exposed men earn more than their brothers.

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Findings vs. Interpretation in “The Long-Term Impacts of Teachers” by Chetty et al.

Education Policy Analysis Archives ◽

10.14507/epaa.v21n10.2013 ◽

2013 ◽

Vol 21 ◽

pp. 10 ◽

Cited By ~ 1

Author(s):

Moshe Adler

Keyword(s):

Test Scores ◽

Value Added ◽

Long Term Impact

The authors of the study “The Long-Term Impact of Teachers” claim that their study shows that increases in teacher value-added lead to significant and lasting increases in test scores and significant increases in income that will last throughout adulthood. Instead, I show that these claims are false because they are contradicted by the findings of the study itself. In fact, the results of the Chetty et al. study raise serious questions about the benefits of using the value-added method for evaluating teachers.

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Crisis Phones - Suicide Prevention Versus Suggestion/Contagion Effects

Crisis ◽

10.1027/0227-5910/a000313 ◽

2015 ◽

Vol 36 (3) ◽

pp. 220-224 ◽

Cited By ~ 3

Author(s):

Steven Stack

Keyword(s):

Suicide Prevention ◽

Contagion Effects ◽

Long Term Impact

Abstract. Background: There has been no systematic work on the short- or long-term impact of the installation of crisis phones on suicides from bridges. The present study addresses this issue. Method: Data refer to 219 suicides from 1954 through 2013 on the Skyway Bridge in St. Petersburg, Florida. Six crisis phones with signs were installed in July 1999. Results: In the first decade after installation, the phones were used by 27 suicidal persons and credited with preventing 26 or 2.6 suicides a year. However, the net suicide count increased from 48 in the 13 years before installation of phones to 106 the following 13 years or by 4.5 additional suicides/year (t =3.512, p < .001). Conclusion: Although the phones prevented some suicides, there was a net increase after installation. The findings are interpreted with reference to suggestion/contagion effects including the emergence of a controversial bridge suicide blog.

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