Avoided the possibility of demand characteristics or gender bias by ordering 13 males and 13 female participants to deliver real electric shocks to a puppy by electrifying the puppy's cage, causing it to run, yelp, and howl. At more intense shock levels , the puppy responded more strongly. Despite many participants showing extreme emotional reactions , such as crying , 54% of male and 100% of the female participants delivered maximum shocks to the puppies