Chuluunbaatar Enkhzaya examines the "inadequate" behaviour of banks in Mongolia by analysing the institutional framework of the banking system, especially in lending. She focuses on the genesis of informal institutions of lending and their interaction with formal institutions of lending. Herewith, informal institutions such as the attitude to risk were indirectly observed by diagnosing the "action-regulating" knowledge of bankers. In order to ensure an effective allocation of the scarce financial resources of Mongolia the author therefore suggests a change - as simultaneous as possible - of formal and informal rules.