CONVERGENT AND CRITERION-ORIENTED VALIDIT Y OF THE TYPE-A SCALE OF THE JENKINS ACTIVITY SURVEY (JAS) IN A SAMPLE OF CANARIAN MALES

In this paper we analyzed the convergent and criterion-oriented validi ty of the Type A Scale of the Jenkins Activity Survey (JAS), which has been modified as regards the assessment of the items. The convergent validity, referred to the Structured interview and the JAS, makes it c lear that the three factors oi the Type A Scale comprise central aspec ts of Type A Behaviour Pattern and that the Type A Scale proves to be a good compendium of the factorial scales of the JAS. The results whic h refer to the criterion-oriented validity prove that the Type A Scale discriminates between healthy people and people suffering from ail ki nds of coronary disease, and that this discrimination is made more cle arly when coronary heart disease shows as angina. The Type A Scale als o discriminates between people suffering from heart disease, coronary and non-coronary. The paper concludes with the suggestion that the IAS be replaced by the Type A Scale, which further offers a better criter ion-oriented validity.