rites of passage is a subset of actions in a human being's life, where going through the rite within the traditions of Hinduism, affects the individual internally as well as externally in how society perceives the person. This occurs in the form of impressions and imprint within, that is samskara. Hinduism The Hindu schools differ in the details, but all posit that samskara are formed in every individual by a number of ways. This includes perceptions (what one sees, hears, touches, tastes, smells), chitta cognition (what one feels and thinks), willful actions, and also intentions before and during the action. Training and study, in these schools, is a form of exposition, introspective realization and in many cases practice or repetition to make the "impression, imprint" part of one's nature, where the practice reinforces the dispositions (samskara) and dispositions reinforce the practice, in a circular feedback. Scholars state that David Hume's "impressions" theory is similar to Samskara theory of Hinduism. The Hindu schools rely on samskara theory as one of the pillars for their epistemology (pramana), wherein they explain how and why man knows anything, remembers anything, expects anything, feels fulfillment, feels frustration, feels freedom and joy, or feels suffering and pain. Samskara are the impressions and dispositions that develop and accumulate deep inside a person, according to these schools, from perception, inference, choices, preparation, practice, interaction with others, thoughts, intent, willful actions and such karma. These manifest, Hindu philosophies state, as habits, behavior, tendencies, psychological predispositions and dispositions. Actions, studies, diligent preparation and inner resolutions trigger Samskaras – hidden impressions or dispositions – in the psyche of an individual, and these influence how the individual acts, perceives self and the manner in which the individual responds or accepts the karmic circumstances and the future. Ian Whicher explains that, in the philosophical theories of Hinduism, every karma (action, intent) leaves a samskara (impression, impact, imprint) in the deeper structure of human mind. This impression then awaits volitional fruition, in the form of hidden expectations, circumstances or unconscious sense of self-worth. It manifests as tendency, karmic impulse, subliminal impression, habitual potency or innate dispositions. Samkhya-Yoga In Samkhya and Yoga schools, Sankhara, also spelled as Samskara, are impressions or residues that affect an individual's Gunas (behavior attributes). These impressions constitute part of the mechanistic foundation behind ancient Indian scholars' explanation on how karma theory works in practice. Samskara are explained as dispositions, character