Entrepreneurship Education: A road to success have high performance aspirations233. So, when designing a questionnaire and analysing impact measurement data, the potential bias from self-efficacy should be taken into consideration. When interpreting results, it is also important not to confuse correlation with causality: for example, if the number of start-ups has increased during the same period that an entrepreneurship education programme or even strategy has been launched, this does not automatically prove that the programme/strategy led to the increase in start-ups. The correlation can, however, be used as basis for further research on causality. 233 http://serc.carleton.edu/NAGTWorkshops/affective/efficacy.html 83