 Furthermore, the 1970s proved to be difficult as fellow researchers challenged her theory with questions concerning the involvement of psycho physiological factors and the psychological experiences at the Loyola Symposium on Feelings and Emotions.Despite this and re-evaluating the theory, Arnold's discoveries paved the way for other researchers to learn about variances of emotion, affect, and their relation to each other.Following close to Magda Arnold in terms of appraisal theory examination was Richard Lazarus who continued to research emotions through appraisal theory before his death in 2002.