The article focuses on various studies related to the link between martial arts training and its various outcomes like aggressiveness. An inverse relationship between aggressiveness and length of martial arts training, was found by T. A. Nosanchuk of Carleton University. Another study found that problem teenagers changed after some months of practice in Tae Kwon Do. It is stated that the ability to defend one's self and physical fitness are two other benefits of martial arts.
Trulson, Michael E., Chong W. Kim, and Vernon R. Padgett. "That Mild-Mannered Bruce Lee." Psychology Today, January 1985, 79.