Ɣer taggara n 1960, yeflali-d uktazal amsilɣan (formative) i d-yellan mgal n uktazal amselkin (somative), yella-d daɣen Pieron i d-yesnulfan awal n tmestalsent (docimologie) i yefkan tazrawt tusnant i tarrayin n uktazal.