The study of opportunistic behavior in relation with manipulation techniques is important because it directly affects the efficiency of agent's relationship. We identified two forms of opportunistic behavior that depend on the subject composition of the contractual relationship. In the article we attempt to identify significant techniques of manipulation of information. It is important to understand real nature of opportunism in contractual relationship. The study proved the high importance, because it expands our knowledge about the nature of exogenous opportunistic manifestations as a society and economic phenomenon.

The study of opportunistic behavior is important because it directly affects the efficiency of economic systems. We conducted qualitative and correlation analysis. The dependence between the manifestations of opportunistic behavior and economic growth was proved. In the article we attempt to identify significant correlation between the rate of economic growth and opportunistic behavior. The study proved the high importance, because it expands our knowledge about the nature of exogenous opportunistic manifestations as an economic phenomenon.