About this project…


Rules Governing Citations


The Purpose Of This Site

One of the problems facing someone interested in working with early psychological texts is the fact that the meaning of words sometimes changes over time. How can one be certain that the meaning one assumes to be correct for a key word is indeed accurate? If one were reading a book published in 1670, what would the author have meant when using the words “appetite”, “passion”, or “sense”? Would the meaning have been the same a century later? When, as another example, did “attitude” come to imply more than a mere postural stance?

The purpose of the Changing Meanings of Key Terms in the History of Psychology site is to assist those working with early English-language texts by tracing the evolving meaning of common psychological terms. To do this, words central in historical discussions of psychological issues have been identified and their changing meanings have been charted by providing successive definitions taken from early English-language dictionaries for each term.