Baxter, James S., Manstead, Antony S.R., Stradling, Stephen G., Campbell, Karen A., Reason, James T., and Parker, Dianne
Over 100 years ago the effects of an audience upon individual behavior and task performance were described. Specifically, the presence of an audience correlated with increased speed of cyclists in a race. Since this observation was first made, much attention has been given to the social facilitation phenomenon with regard to both facilitation and inhibition effects of the audience upon task performance of the individual. With this concept in mind, the effects of a passenger on a driver where evaluated with regard to gender and age of both participants. To derive data for this study, researchers covertly followed drivers who were alone and drivers with one passenger; observations were made. Each car (the target car) was followed for about four minutes, the driver's age was estimated as older (over 30 years) or younger (under 30 years), and driver behavior such as illegal maneuvers and discourteous deportment were noted. A total of 244 cars were observed in this manner. The most common aberrant actions committed by more than 10 percent of the drivers were, in order of frequency, changing lanes without signaling, speeding (over 40 miles per hour), driving unnecessarily on the crown of the road, and following too closely. The major driver characteristic that emerged was that younger drivers tended to drive faster than older drivers. The primary passenger effect was that drivers with older female passengers drove slower than when a younger passenger of either sex accompanied them, or when the drivers were alone. Drivers changed lanes without signaling more frequently when an older female or a younger male was the passenger, regardless of the age or sex of the driver. Following too closely was largely driver-dependent, with younger females more likely than older females to do this. These results generally support previous studies, which have reported that younger drivers tend to commit more violations and drive faster than older drivers. Improvements of road safety propaganda may be enhanced by the application of these results to specific categories of drivers. (Consumer Summary produced by Reliance Medical Information, Inc.)