Which theorist is known for using factor analysis to develop a theory of personality?

The theorist known for using factor analysis to develop a theory of personality is Hans Eysenck. Eysenck applied factor analysis to identify and measure dimensions of personality, leading to his development of a model characterized primarily by three major traits: extraversion, neuroticism, and psychoticism. This statistical method allowed him to uncover underlying patterns within personality traits by analyzing correlations among various personality measures, which he believed could be mapped to these three fundamental dimensions.

By utilizing factor analysis, Eysenck was able to provide a more empirical and structured approach to personality assessment, distinguishing his work in the field and contributing significantly to our understanding of personality as a multidimensional construct. This approach differs from other theorists, who may have relied more on descriptive methods or theoretical constructs without the rigorous statistical backing that Eysenck employed.