Emotional mechanisms and format effects of motivational questions for blood donation.

Unlabelled: Prior studies suggest that responding to online motivational questions increases blood donation intention. The present studies were designed to extend these findings by (a) exploring the impact of methodologic variations in the content and order of administration of specific questions on donation intention and (b) examining anticipated positive and negative emotional reactions as potential mediators.

Study Design And Methods: In the first study, 4709 respondents (51.