[Over-indexed] CEO names tend to be either short or shortened versions of popular first names. Onomastics specialist Dr. Frank Nuessel suggests that shortened versions of given names are often used to denote a sense of friendliness and openness. Female CEOs, on the other hand, use their full name to project a more professional image. Short, four-letter names are even more popular in sales (Chip, Trey) but not in engineering (Rajesh) or the restaurant industry, where the top over-represented names are Thierry, Philippe and Laurent. Monosyllabic CEO names are also not necessarily popular in all countries.