1. Target: Highway risks;Bick;Environment,1980
2. Chance, Skill and Luck;Cohen,1960
3. Statistical Power Analysis for the Behavioral Sciences;Cohen,1969
4. Seat belt usage and risk-taking behavior at two major intersections;Deutsch;Amer. Assoc. Auto. Med. Quart. J.,1981
5. Verbal reports as data;Ericsson;Psychol. Rev.,1980