Yogachara (IAST: ""; literally "yoga practice"; "one whose practice is yoga") is an influential tradition of Buddhist philosophy and psychology emphasizing the study of cognition, perception, and consciousness through the interior lens of meditative and yogic practices. It is also variously termed "Vijñānavāda" (the doctrine of consciousness), "Vijñaptivāda" (the doctrine of ideas or percepts) or "Vijñaptimātratā-vāda" (the doctrine of 'mere "vijñapti"), which is also the name given to its major epistemic theory. There are several interpretations of this main theory, some scholars see it as a kind of Idealism while others argue that it is closer to a kind of phenomenology or representationalism.