Research has shown that people are more likely to show dishonest and self-interested behaviors in darkness than in a well-lit environment (Zhong, Bohns, & Gino, 2010). In a related experiment, students were given a quiz and then asked to grade their own papers while the teacher read the correct answers. One group of students was tested in a well-lit room and another group was tested in a dimly-lit room. The researchers recorded the number of correct answers reported by each student to determine whether there was a significant difference between the two groups.