Historiometrics is a quantitative and nomothetic method for the study of aesthetic masterpieces, artistic geniuses, and the sociocultural context in which those masterpieces emerge and their creators operate. The technique specifically depends on the scientific analysis of biographical and historical data, including the (often computerized) content analysis of actual works. The units of analysis can range from products to creators to whole eras or periods. Historiometric research can sometimes rely on standard statistical methods, such as factor analysis and multiple regression, but often more advanced techniques are required, such as hierarchical linear modeling. Although historiometric research on the arts has been carried out since 1835, the practice remains less common than other methods used in empirical aesthetics. Even so, it provides the investigator with the unique opportunity to examine the psychological and sociocultural foundations of genuine masterworks in literature, music, the visual arts, and cinema.