Although, as commonly used, the term creativity has been applied to a wide range of behavior, events, and practices, these have often consisted of simply different or deviant, uncommon, or unusual occurrences. Many studies have been derived from personal intuition or anecdotes, and have often focused simply on skills, divergent thinking or employment in particular types of artistic or scientific occupations. On an operational basis, however, creativity and creative activity is positively valued, usually definitively so, and the value must be consensually validated and stand the test of time.