With two different risky assets, an investor can minimize total portfolio volatility through the combination of investments with low to negative correlation. In a higher yield environment, 60/40 can ...

Public health is worsening, autism rates are rising — and so are incident conspiracy theories, including claims that the root of the autism evil is vaccines. As the CDC reopens the vaccine-link debate ...

Kwon is a Ph.D. student in health policy at Harvard University. Stuart is professor and chair in the Department of Biostatistics at the Johns Hopkins Bloomberg School of Public Health. It is human ...

We’ve all been told that correlation does not imply causation. Yet many business leaders, elected officials, and media outlets still make causal claims based on misleading correlations. These claims ...

A comment posted by a reader on a recent post reprimanded me for suggesting that marijuana caused relationships to go bad. In this instance the reader was mistaken, as I had specifically used the word ...