In the United States most people have adopted a worldview based on the core tenets of liberal democracy, capitalism, science, religion and the social sciences. Scientific advances, though, have persuaded many individuals to revise this traditional view and adopt an alternative belief system. Thus some people embrace social democracy, regulated capitalism or a more extreme political philosophy. Others adopt non-theistic religions or break their affiliation with any religion. The latter include naturalists who reject supernatural explanations and take science as the best description of reality. Many people reject the blank slate doctrine and hold that human behaviour results from the interaction of the environment with innate biological factors.