Edvardsson, BoVegelius, Jan2011-02-172011-02-171981Edvardsson, Bo & Vegelius, Jan. (1981). O-factor analysis of mood ratings. Applied Psychological Measurement, 5, 459-465. doi:10.1177/014662168100500403doi:10.1177/014662168100500403https://hdl.handle.net/11299/100419This paper demonstrates the usefulness of O-factor analysis in studying how feelings are structured and how situational factors influence feelings. Four subjects made self-ratings on several occasions using variables they had chosen themselves. Data were O-factor analyzed, and factors were interpreted in terms of feelings common for situations which loaded on the factors. Problems and applicability of the method in psychotherapy research are discussed.enArticle