Bachelor Thesis from the year 2016 in the subject Psychology - Adjacent Fields and Auxiliary Sciences, grade: 1,7, LMU Munich, language: English, abstract: The term psi denotes all phenomena which cannot be explained by the laws of classical physics. Precognition is a form of psi, whereby the future influences the present. We conducted a study to test if strong mental activation through high-arousal visual stimuli caused smokers to exhibit precognition and influence a quantum random distribution in their favor. A Bayesian one sample t test revealed a Bayes Factor BF10 = 12.56, indicating strong evidence for the display of precognition. We found no gender differences and no statistically significant influence of nicotine dependency or smoking addiction on precognition. We outline several explanatory models of quantum mechanics and discuss limitations of the study as well as possible implications of psi-phenomena.