The Eastern Orthodox Church, officially called the Orthodox Catholic Church, and also referred to as the Orthodox Church and Orthodoxy, is the second largest Christian church in the world, with an estimated 225–300 million adherents, primarily in the Balkans, Eastern Europe, and the Middle East. It is the religious affiliation of the majority of the populations of Belarus, Bulgaria, Cyprus, Georgia, Greece, Macedonia, Moldova, Montenegro, Romania, Russia, Serbia, and Ukraine; significant minority populations exist in Bosnia and Herzegovina, Albania, Kazakhstan, Kosovo, Jordan, Palestine, Israel, Lebanon and Syria. It teaches that it is the One, Holy, Catholic and Apostolic Church established by Jesus Christ in his Great Commission to the disciples almost 2,000 years ago.
The Church's structure is composed of several self-governing ecclesial bodies, each geographically (and often nationally) distinct but unified in theology and worship. Each self-governing body (autocephalous jurisdiction), often but not always encompassing a nation, is shepherded by a Holy Synod whose duty, among other things, is to preserve and teach the apostolic and patristic traditions and related church practices. Like the Catholic Church, Anglican Communion, Assyrian Church of the East, Oriental Orthodoxy and some other churches, Orthodox bishops trace their lineage back to the apostles through the process of apostolic succession.
Human behavior refers to the range of behaviors exhibited by humans and which are influenced by culture, attitudes, emotions, values, ethics, authority, rapport, hypnosis, persuasion, coercion and/or genetics.
The behavior of people (and other organisms or even mechanisms) falls within a range with some behavior being common, some unusual, some acceptable, and some outside acceptable limits. In sociology, behavior in general is characterised as having no meaning, being not directed at other people, and thus is the most basic human action. Behavior in this general sense should not be mistaken with social behavior, which is a more advanced action, as social behavior is behavior specifically directed at other people. The acceptability of behavior depends heavily upon social norms and is regulated by various means of social control. Human behavior is studied by the specialised academic disciplines of psychiatry, psychology, social work, sociology, economics, and anthropology.