The use of positive, nonaggressive humor is associated with 

• improved learning outcomes, 
• a relaxed learning environment, 
• better student evaluations, 
• an increased motivation to learn, 
• improved information recall, 
• an increased degree of student satisfaction throughout the learning process.

The use of negative or aggressive humor, especially if aimed at particular students, will produce the opposite effect.

• Humorous information receives increased attention during the perception stage.
• Improved encoding. Our brain gives preferential treatment to humorous information when it comes to storing it in our memory.
• The use of humor serves as a distraction from negative ...