In this study, we extend prior research by exploring the transition from nascent entrepreneur intentions to established entrepreneur behavior, whether entrepreneurial attitudes are inherent in nascent entrepreneurs, to what extent it is possible to develop entrepreneurial attitudes in non-entrepreneurs, and the use of values and attitudes to discriminate between entrepreneurs and non-entrepreneurs. The study is longitudinal with 4.5 years between Baseline (T1) and End-of-Study (T3). The research involved two groups: nascent necessity-based entrepreneurs (experimental group) and non-entrepreneurs (control group) who were exposed to an intensive one year entrepreneurship training program intervention (T1-T2). Measurements were taken at T1, T2, and T3. Differences in values and entrepreneurial attitudes between the groups are examined.