Impulse behaviour in general and impulse buying in particular have a long history of negative associations in research. Consumers are advised by the popular press to refrain from impulse buying. Marketing practitioners, on the other hand, strive to further increase consumer impulse buying expenditures, which have already been on the increase for decades. This may be an indication that impulse buying makes consumers feel happy. Although the topic happiness has received considerable attention in various fields of research, there is little evidence of an in-depth empirical exploration of the role of happiness in impulse buying, which was addressed by this study. This thesis was based on the phenomenological paradigm and adopted a subjective st...