ABSTRACT
Cronbach indicated that psychologists are one of two types: those who seek to make fine distinctions among psychological concepts by splitting them into constituent elements, and those who seek to aggregate concepts by combining narrow concepts into broader ones. Titchener, the pioneer of American experimental psychology, might be classified as the former for his effort to document 40,000 human sensations. In contrast, Spearman’s research on a general factor of intelligence would classify him as the latter. In most areas of individual differences, personality factors being the current Zeitgeist, the war between the two types rages on.
