This thesis presents two studies that are concerned with evaluating the psychometric properties of the revised version of the Test of Attentional and Interpersonal Style (TAIS; Nideffer, 1976) - the TAIS2 (Nideffer, n.d.). The original TAIS has many psychometric weaknesses but the revised version was developed in an attempt to rectify the problems of the original. The aim of Study One was to explore the internal consistency and construct validity of the TAIS2 attention subscales. These psychometric properties were evaluated on a sample of 119 undergraduate students who completed the TAIS2 along with measures of anxiety and the