Scientific literature on Arab Americans has been relatively sparse, to some extent due to the “invisibility” (Salari, 2002) of Arab Americans related to their identification as “White” in Census data and elsewhere. Attention to this population has increased, yet researchers may be humbled in their efforts to measure characteristics of individuals who have roots in 22 Arab countries. The diversity of education, language, and reasons for coming to the U.S. over many decades adds to the challenge of accurately capturing the Arab American experience. This makes the development and use of accurate and valid measurement tools particularly crucial to scholars.