Anna wants her son Danny to spend more time outside in the fresh air, but he always resists, preferring to play inside on the computer. How can Anna use negative
reinforcement to increase Danny's time spent playing outside?
Take away his computer time when he does not play outside
Allow him extra computer time for every minute he plays outside
Eliminate a task on his chore list for every hour he plays outside
Add tasks to his chore list if he fails to play outside for an hour each day