The Test of Attentional and Interpersonal Style (TAIS), developed by Robert Nideffer in 1976, is a widely used test in sport psychology. The TAIS measures personality and attention traits that are associated with high level performance. Nideffer has recently revised the TAIS with the new version titled the TAIS2. This book describes two studies that examine the psychometric properties of the seven attention sub-scales of the TAIS2. The studies examined the internal consistency, construct validity and predictive validity of the sub-scales. The findings highlight that the TAIS2 is somewhat psychometrically superior to the original TAIS but also highlights that the TAIS2 is not yet a psychometrically sound measure. This book provides in-depth discussion around the utility of the TAIS2 which would be useful for anyone who currently uses or intends to use the TAIS or TAIS2 in their research or clinical work.