In the first test, 45 participants were randomly assigned to watch different videos of a car accident, in which separate videos had shown collisions at 20 miles per hour, 30 miles per hour, and 40 miles per hour.
45 osalisel paluti esimeses uuringus vaadata erinevaid videoid autoavariidega, mis toimusid kiirusel 20 miili tunnis, 30 miili tunnis ja 40 miili tunnis.