“…This poor performance of subjective norm within the extended TPB, according to Ajzen, confirms the importance of "personal consideration" over "perceived social pressure" (Ajzen, 1991, p. 189) in adults' decision making process about safety gear use. Because teenagers are sensitive to peer opinions, previous studies among teenagers have found that positive attitudes toward bicycle helmet-wearing among peers increase a teenager's likelihood of wearing a bicycle helmet (e.g., Lajunen and Räsänen, 2001;O'Callaghan and Nausbaum, 2006). As age increases, skaters may be less concerned about disapproval from others, thereby explaining why the subjective norm may be less important in the adults' decision making about safety gear use than their personal assessment of the usefulness of this health behaviour (i.e., attitude) or their risk of sustaining a severe skating-related injury (Latimer and Martin Ginis, 2005).…”