（viprayyuktas sam!ska^ra^h， citta-viprayukta-dharma）; "elements not concomitant with mind （or matter）." Within the fourth of the five skandhas （impulse 行） there are forces not associated with mental functions as well as forces that are. Forces that are associated with mental functions are included in the group of elements with that characteristic. Concerning these 'mental function' elements， the two skandhas of feeling and perception are included as separate mental functions， while the remaining mental functions are included in the skandha of impulse. However， within the skandha of impulse， elements that are not mental functions， such as physiological energies are present. Since these do not operate in direct association with the mind， they are named as such. In the theory of the Abhidharmako/sa school 俱舍宗， there are fourteen of these kinds of elements and they are considered to be real， while in Consciousness-only theory， there are twenty-four， and they are considered to be unreal. In Yoga^ca^ra， these are: acquisition 得， life force 命根， human commonality 众同分， nature of unenlightened sentient being 异生性， the concentration of no conceptualization 无想定， the concentration of extinction 灭尽定， 无想报， body of name 名身， body of phrases 句身， 文身， birth 生， old age 老， abiding 住， impermanence 无常， transmigration 流转， 定异， concomitance 相应， activity 势速， sequence 次第， direction 方， time 时， number 数， combining nature 和合性， non-combining nature 不和合性［大乘百法明门论T 1614.31.855b-c］