Also, the way Hirschi organized his work is very thorough. He developed his theory by comparing and contrasting three criminological perspectives, including Sutherland's (1939) cultural deviance theory, Merton's (1938) strain theory, and his social bond theory. In this way, he can design operational measures for an investigation based on the key concepts of each theory. For example, questions about attitudes toward breaking laws are largely based on the concept of cultural deviance theory. Consequently, by using the comparative method, Hirchis can simultaneously illustrate the advantages of social bond theory as well as the limitations of these two theories. This approach was a new way for criminology. Finally, Gottfredson and Hirschi's (1990) self-control theory built on the premise of social control theory, seeking to extend the scope of explaining delinquent behavior among individuals.