Career choice = s [(ee+docdou.com)+(f f, mm)+(ll+aa)+(PP * gg * TT * ii)]
S= gender, E= general economic situation, F= friends and peer groups, M= marital status, B= family background, race, C= opportunity, L= general study and education, A= acquired special skills, P= physiological characteristics, G= cognition or special talent, T- temperament and character, I= interests and values.
Roy uses lowercase letters to indicate the correction factor, and 12 uppercase letters to indicate the general factor. Each factor will be influenced by individual's unique quality at a specific time and in a unique environment, and everyone's formula is unique. Only s (gender) factor has no correction coefficient. It is also the only general factor that affects other 1 1 factors. Roy divided these factors (except S factor) into four groups. The first group contains factors beyond human control, while the last three groups contain factors based on heredity and acquired experience. One can choose one's own experience, interests and skills. Roy's analysis helps us to understand why career development and career choice are so difficult. Solving career problems and making career decisions is a complicated task, but as long as we have time, motivation and hard work, we can develop our skills, improve our cognitive ability, clarify our interests, values and skills, understand our professional knowledge and know the career world, so as to improve our career decision-making ability and learn to control our career.