The intensity of motivation.

INTRODUCTION ..................................................................................... 109 POTENTIAL MOTIVATION AND MOTIVATIONAL ROUSAL ....................... 110 Potential Motivation .............................................................................. 110 Motivational Arousal ............................................................................. 111 EVIDENCE ON THE JOINT EFFECTS OF POTENTIAL MOTIVATION AND IFFICULTY ..................................................................... 111 Effects on Cardiovascular Reactivity .......................................................... 111 Intended Effort .................................................................................... 1 ! 6 Behavioral Effects ................................................................................ 117 Subjective Appraisals of Motivational Factors .............................................. 121 CONCLUSIONS ....................................................................................... 129 ACKNOWLEDGMENTS ............................................................................ 129