Psychological organizations in the United States

The organizations to which psychologists belonged at the turn of the 20th century were identified. The attributes of the meetings and the membership of those organizations were compared and discussed. In addition to the American Psychological Association, psychologists belonged to the American Philosophical Association and the American Association for the Advancement of Science as well as to local and regional organizations. In addition, some psychologists belonged to the Society of Experimental Psychology, but membership in that organization was by invitation only. The topics presented at the meetings of the psychological and philosophical associations often were identical or very similar, and the clear disciplinary separation that is typical in 2000 was rare in 1900.