Stakeholders can influence a firm's voluntary accounting disclosures according to systems theories like legitimacy theory, stakeholder theory, and institutional theory. These theories view firms as open systems that are influenced by and provide inputs to broader social, economic and legal systems. In contrast to positive accounting theory, which claims managers will disclose only what benefits themselves, systems theories assert that managers will consider how disclosure decisions impact powerful stakeholders in order to maintain the firm's social contract and legitimacy within society.