Home > Publications . Search All . Browse All . Country . Browse PSC Pubs . PSC Report Series

PSC In The News

RSS Feed icon

Buchmueller says employee wages are hit harder than corporate profits by rising health insurance costs

Davis-Kean et al. link children's self-perceptions to their math and reading achievement

Yang and Mahajan examine how hurricanes impact migration to the US

More News

Highlights

Pamela Smock elected to PAA Committee on Publications

Viewing the eclipse from ISR-Thompson

Paula Fomby to succeed Jennifer Barber as Associate Director of PSC

PSC community celebrates Violet Elder's retirement from PSC

More Highlights

Next Brown Bag

Mon, Sept 11, 2017, noon:
Welcoming of Postdoctoral Fellows: Angela Bruns, Karra Greenberg, Sarah Seelye and Emily Treleaven

David Lam photo

The Effects of the Weather on Fertility in Human Populations

Publication Abstract

Lam, David, and Jeffrey A. Miron. "The Effects of the Weather on Fertility in Human Populations." PSC Research Report No. 93-291. 9 1993.

This paper provides new evidence on the effects of weather on fertility. Monthly temperature data for a variety of states and countries are used to estimate the direct contribution of weather in explaining both the seasonal and non-seasonal variation in monthly births. There is significant seasonality in births in every population studied, suggesting an influence of weather on conceptions. The differences in seasonal patterns across countries, however, provide mixed evidence regarding weather based explanations of birth seasonality. Populations in the sourthern United States, for example, exhibit spring troughs in births, consistent with the hypothesis that summer heat depresses conceptions. Most populations in Northern Europe, however, display spring peaks in births. In order to explore these puzzles the authors look directly at the effects of monthly temperature on conceptions by estimating regressions in which weather variables are entered in a flexible form. Results indicate that the weather has a quantitatively important influence on both the seasonal and non-seasonal variation in births. In particular, summer temperature extremes exert a depressing effect on conceptions, an effect that is clearly important in explaining the summer trough in conceptions in the southern United States. Results also show, however, that there is significant seasonality in births even after accounting for weather. Flexible controls for monthly weather do not appear to explain the persistent spring peak in births in Northern Europe, suggesting that other factors play an important role.

Browse | Search : All Pubs | Next