The book Business Brilliant is based on an original study of 800 households during the first three months of 2009. Two groups were surveyed in a telephone-based interview process. The first group of "middle-class" respondents had a household income between $50,000 and $80,000 and a net worth less than $1 million. "Business Brilliant" survey respondents were all self-made (none had received more than $50,000 from their families). They had a net worth greater than $1 million and were categorized in three groups: $1 million to $10 million, $10 million to $30 million, and greater than $30 million.