%0 Journal Article %T Resiliency, stress appraisal, positive affect and cardiovascular activity %A ukasz Kaczmarek %J Polish Psychological Bulletin %D 2009 %I %R 10.2478/s10059-009-0007-1 %X In accordance with the undoing hypothesis (Fredrickson, Levenson, 1998), evoked positive affect speeds up the cardiovascular system recovery in a stressful situation. An attempt was made to replicate this finding in an experimental study. Individuals characterized by high resiliency levels are capable of more efficient utilization of positive emotions in a stressful situation. Since in earlier research no relationship had been found between resiliency and a tendency to appraise stress as a challenge, this study investigated a possible mediating function of a more specific dimension of cognitive appraisal, i.e. that in terms of activity-oriented challenge appraisal (W odarczyk, Wrze niewski, 2005). The study shows that evoked positive affect does not lead to a faster recovery. However, highly resilient individuals turned out to achieve higher levels of positive affect in a stressful situation; this effect was mediated by challenge-activity appraisals. %K positive affect %K resiliency %K challenge %K cardiovascular activity %K undoing hypothesis %U http://versita.metapress.com/content/xw4612x1v1429k40/?p=34509d69c3e241199735a092a12d6675&pi=6