PhD一般指哲学博士。高级学衔之一，通常是学历架构中最高级的学衔。
Doctor of Philosophy
Dr. Benjamin Hardy is an organizational psychologist心理学家 and bestselling畅销书的作者 author of Willpower Doesn’t Work and Personality Isn't Permanent.
His blogs have been read by over 100 million people and are featured on Harvard Business Review, New York Times, Forbes, Fortune, CNBC, Cheddar, and many others. He is a regular contributor to Inc. and Psychology Today and from 2015-2018, he was the #1 writer in the world on Medium.com.
He and his wife Lauren adopted three children through the foster system in February 2018 and, one month later, Lauren became pregnant with twins, who were born in December of 2018. They live in Orlando.