This chapter studies the effects of adopting ethnic recognition on implementation of recognition-based policies, political inclusion, and indicators for peace, focusing on conflict-affected countries between 1990 and 2012. Adopting recognition in constitutions or political settlements greatly increases the rate at which recognition-based policies are adopted in the executive, legislative, security, justice, civil service, education, and language policy domains. Recognition leads to large increases in ethnic inclusion, measured by the population share of ethnic groups whose members have access to state power structures. On average, countries that adopt recognition go on to experience less violence, more economic vitality, and more democratic politics, and countries under plurality ethnic rule drive these aggregate effects. The latter finding reaffirms the importance of ethnic power configurations in explaining not only the adoption of ethnic recognition but also its effects on peace.