Study is explored driving frequency and alcohol consumption based on gender differences and determined usefulness of the variables of the theory of planned behavior and relationship between optimism bias and drink driving in young adults. Data collection was conducted via a questionnaire administered to 274 drivers (59.9% females) aged 18–30 years in possession of driving license and reported driving around 13000 km/year. Methodology The questionnaire consisted of items related to positive attitudes to drink driving, subjective social norms, perceived behavioral control, optimism bias, alcohol use and driving under influence of alcohol. To identify positive influence of attitudes on drink driving behavior Attitudes on Drinking and Driving Scale (ADDS) was used. The scale consisted of 12 items scored on Likert scale from 0 to 4 (completely disagree-completely agree). For determination of relation between …show more content…
A high score on an ADDS indicates positive attitude towards behavior. To determine the influence of subjective social norms on drink driving questionnaire consisted of 8 items related to disapproval by peers and parents perceived norms (e.g., “Your friends/your parents would disapprove of you driving after having more than four drinks”). All TPB constructs were measured on 8-item scale scored from 0 to 4 (completely disagree-completely agree). Seven items were used to determine influence of perceived behavioral control by assessing to which extent person is able to control drinking and avoiding drinking and driving which rely on drivers judgement on their ability or difficulty to preform behavior at a given level. Items were scored