During the 1970s, Clark explored the role of sensory perception and psychic interaction that the participants would have with her artwork. She referred to this as "ritual without myth". For Clark, the artwork would have no representative meaning outside of its manipulation by the participants. Participants would take the art objects and fashion them in any way that they pleased. At this point, the line between the participant and artwork would become blurred. The participants would become one with the art piece. In a sense, the participant and artwork would become fused. In the final years of her career, Clark focused solely on psychotherapy and the use of art in healing patients. Clark's objective through her art was to surpass each phase since ideas that were originally considered groundbreaking were outdated with regard to her later works.