Data on Tolerance and Racism in the United States

A new study quantifies implicit and explicit bias in the United States. Generally, we have become more tolerant and accepting of our neighbors. However, our implicit biases have generally not fallen as fast as explicit biases.

Optimism Grows with Age

If you're young and unhappy, don't worry, things get better. Several studies show that optimism increases with age. In fact, most people don't peak until their 50s, and many will continue to grow in optimism well after their 60s.

Academic Performance and Bipolar Risk

Bipolar Disorder is more common among kids who do very well and very poorly in school. This effect is stronger among boys. Those who do well in the humanities are at a higher risk, while those who do well in sports are at a lower risk.

Classical Music & Intelligence

You’ve probably heard the idea that listening to classical music means you’re smart. When we look at the actual data, it tell us a different picture. While there is a correlation between classical music and intelligence, this correlation disappears when we properly analyze the data.

ADD and ADHD Trends in the United States

ADD and ADHD have grown significantly in the United States. It has grown faster in African American children and low income children. It is more common in boys than in girls.

Seasonal Affective Disorder: What Are The Symptoms?

Seasonal Affective Disorder is a common psychiatric condition that comes and goes with the seasons. By definition, it shares symptoms with depression. However, there are a few key features that set it apart including dietary habits and sleep habits.

PTSD Statistics: By Combat Exposure and by Gender

We've compiled data from multiple studies in this brief report on PTSD in America. Troops deployed or exposed to combat have a high prevalence of PTSD. According to statistics from the Veterans Administration, women have a much higher prevalence of PTSD.