Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

Ponzi and pyramid schemes both take advantage of unsuspecting individuals by promising extraordinary returns in exchange for their money. With Ponzi schemes, investors give money to a portfolio ...

Who is a certified cognitive behavioral therapist? Many therapists practice cognitive behavioral therapy. There is no certification or license required to become a cognitive behavioral therapist, but ...

Objective To determine if any differences exist between the rolling averages and exponentially weighted moving averages (EWMA) models of acute:chronic workload ratio (ACWR) calculation and subsequent ...