His good luck in deciding to take his first psychology class because it fit his schedule influenced his article on "The Psychology of Chance Encounters and Life Paths."  He developed a theory of motivation based on the concept of self-efficacy, which in turn feeds into his notion that environment and behavior affect each other, a notion he termed "reciprocal determinism."  He studied acquisition o
His good luck in deciding to take his first psychology class because it fit his schedule influenced his article on "The Psychology of Chance Encounters and Life Paths."  He developed a theory of motivation based on the concept of self-efficacy, which in turn feeds into his notion that environment and behavior affect each other, a notion he termed "reciprocal determinism."  He studied acquisition of self-reinforcement behaviors through observations of models with Walter Mischel, his colleague at Stanford.  In another study by this man one type of person worked quietly with a tinker toy set, while another type of person proceeded to pick up a mallet and make comments like "He sure is a tough fella" and "Punch him in the nose" while striking a particular toy.  FTP name this founder of social cognitive theory who conducted the notorious "bobo doll" study.
His good luck in deciding to take his first psychology class because it fit his schedule influenced his article on "The Psychology of Chance Encounters and Life Paths."  
Albert Bandura