Michelacci and Schivardi are a pair of researchers who believe that identifying and comparing the relationships between an entrepreneur's earnings and education level would determine the rate and level of success. Their study focused on two education levels, college degree and post-graduate degree. While Michelacci and Schivardi do not specifically determine characteristics or traits for successful entrepreneurs, they do believe that there is a direct relationship between education and success, noting that having a college knowledge does contribute to advancement in the workforce.
According to Paul Reynolds, founder of the Global Entrepreneurship Monitor, "by the time they reach their retirement years, half of all working men in the United States probably have a period of self-employment of one or more years; one in four may have engaged in self-employment for six or more years. Participating in a new business creation is a common activity among U.S. workers over the course of their careers". In recent years, entrepreneurship has been claimed as a major driver of economic growth in both the United States and Western Europe.
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