Citta and cetasika, which are both mental phenomena, nama, arise because of their appropriate conditions. Wholesome qualities and unwholesome qualities which arose in the past can conditon the arisng of such qualities at present. Since our life is an unbroken series of cittas, succeeding one another, wholesome qualities and unwholesome qualities can be accumulated from one moment to the next moment, and thus there are conditions for their arising at the present time.

Some cittas are results of akusala kamma and kusala kamma, they are vipakacittas. Kamma is intention or volition. When there is unwholesome volition it can motivate an unwholesome deed which can bring an unpleasant result later on, and when there is wholesome volition it can motivate a wholesome deed which can bring a pleasant result later on. Akusala kamma and kusala kamma are accumulated from one moment of citta to the next moment, and thus they can produce results later on. Kamma produces result in the form of rebirth-consciousness, or, in the course of life, in the form of seeing, hearing, smelling, tasting and the experience of tangible object through the bodysense. These vipakacittas experience pleasant objects or unpleasant objects, depending on kamma which produces them.