The current paper was prepared for the International Accounting Standards Board (IASB) Research Forum 2017 and evaluates the effects of introducing more principles of disclosure as part of the IASB Disclosure Initiative. We perform a literature review of academic research on how entities have complied with disclosure requirements in the past. The review shows high levels of noncompliance and high volatility across entities, including poor disclosers being far below the average. We find no clear pattern of higher compliance for International Financial Reporting Standards (IFRS) with more reliance on disclosure principles as compared to specific requirements (i.e. IFRS 7, IFRS 8), but note the methodological problem of measuring compliance with disclosure principles. Academic research suggests that the degree of compliance depends on entities' incentives for providing or withholding information in combination with local conditions for primary users, auditors and regulators. Based on our review, we argue that increased reliance on entities to act in 'good faith' when complying with disclosure requirements, in capital-market contexts where entities may be in highincentive situations and have low costs of non-compliance, is potentially risky in terms of how well the Standards protect primary users from poor disclosers. More emphasis is needed on ensuring that the disclosure requirements are enforceable and auditable in order to secure a certain minimum level of disclosure.