Investigating psychological influences of the peer passenger effect on driving

[Speaker] Imai, Yasuo:1
[Co-author] Renge, Kazumi:1
1:Tezukayama University (Japan)

The presence of peer passengers psychologically affects a driver, which is considered a risk factor for a car accident. Although previous studies have focused on the peer-passenger effect among middle-aged drivers, little is known about such effect among young drivers. This study explored the factor structure of the peer-passenger effect and determinants of this effect in both middle-aged and young drivers. A total of 282 drivers completed a self-report questionnaire. Consistent with the previous studies, factor analysis revealed five factors of the peer-passenger effect: dissatisfaction with advice, self-uneasiness, security consciousness, and calmness and silence in car. Multiple regression analyses were conducted to examine how strongly the five demographic variables of gender, age, a license career, and frequencies of driving and of the presence of peer passengers could influence each factor. Results suggested that middle-aged drivers became irritated more easily than young drivers, when receiving unnecessary advice from peer passengers.
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