Increasing attention has been given to the influence of negative affect in psychology, with a specific emphasis on determining trans-diagnostic constructs influencing psychopathology. This work has been extended to concussion by demonstrating that anxiety sensitivity is associated with protracted recovery (Caze et al., 2016). However, less attention has been given to potential influences of positive affect. Preliminary data from tweleve student athletes who suffered a sport-related concussion thus far during the 2016-2017 school year, were given the International Positive and Negative Affect Scale-Short Form (I-PANAS-SF) at baseline and each testing point post-injury. The purpose of this study was to compare changes in Positive Affect to changes in Negative Affect, after injury, and the effect of each on days to recovery from neurocognitive testing. Entering change in Positive Affect and change in Negative Affect into a step-wise linear regression, only change in Positive Affect remained accounting for a significant portion of variance in days till cleared from cognitive testing, R2 = .33, F(1, 11) =5.35, p =.04. Change in Positive Affect scores significantly predicted days till cleared from cognitive testing, b = .57, t(1, 11) = 2.31, p = .04. These preliminary findings suggest that it is not the increase in negative affect after a concussion that predicts recovery, but the decrease in positive affect. It is anticipated that at least 20 concussions will be included in the final sample for this poster.