Social Media and Mental Health
We provide quasi-experimental estimates of the impact of social media on mental health by leveraging a unique natural experiment: the staggered introduction of Facebook across US colleges. Our analysis couples data on student mental health around the years of Facebook’s expansion with a generalized difference-in-differences empirical strategy. We find that the rollout of Facebook at a college had a negative impact on student mental health. It also increased the likelihood with which students reported experiencing impairments to academic performance due to poor mental health. Additional evidence on mechanisms suggests the results are due to Facebook fostering unfavorable social comparisons. (JEL D91, I12, I23, L82)
Two-Way Fixed Effects Estimators with Heterogeneous Treatment Effects
Clément de Chaisemartin, Xavier D’Haultfœuille · American Economic Review
Social Media, News Consumption, and Polarization: Evidence from a Field Experiment
Roee Levy · American Economic Review
Valid <i>t</i>-ratio Inference for IV
David S. Lee, Justin McCrary, Marcelo J. Moreira, Jack Porter · American Economic Review
Bartik Instruments: What, When, Why, and How
Paul Goldsmith-Pinkham, Isaac Sorkin, Henry Swift · American Economic Review
Overreaction in Macroeconomic Expectations
Pedro Bordalo, Nicola Gennaioli, Yueran Ma, Andrei Shleifer · American Economic Review
Methods Matter: p-Hacking and Publication Bias in Causal Analysis in Economics
Abel Brodeur, Nikolai Cook, Anthony Heyes · American Economic Review
Cities in Bad Shape: Urban Geometry in India
Mariaflavia Harari · American Economic Review
Knowledge Spillovers and Corporate Investment in Scientific Research
Ashish Arora, Sharon Belenzon, Sheer Lia · American Economic Review