In this compilation, the authors begin by describing the main impulsive behavior assessment instruments in animals and humans. The following databases were searched from 2005 to 2017: MEDLINE, PsycINFO and BVS/Bireme. The search retrieved four questionnaires and eight tasks for humans, as well as six tasks for animals. This discussion, together with the analysis of instruments applied in human and non-human animals, is the greatest contribution to the field, since there is a lack of literature about the subject. In addition, this chapter discusses the importance of validating such instruments for each population. In the following chapter, the authors propose a developmental theory of persistence in problematic alcohol consumption that emanates from impulsigenic personality traits that differentially predispose individuals to drink when highly emotional. These patterns of behavior are reinforced over time and gradually shift from impulsive to compulsive, first to escape negative emotions, then to avoid them completely. For some, more adaptive methods of coping are not adequately developed. These individuals may transition into early adulthood far less equipped to cope with the stress related to this developmental period, and thus continue to drink in ways that are problematic and potentially harmful. The following chapter focuses on adolescence, a period of life wherein individuals pass through several changes, including experiencing new situations and new relationships with peers, parents and superiors.
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