4Humphreys M S,Revelle W.Peasonality,motivation and performance:a theory of relationship beweenindividual difference and information processingPsychological Review,1984.
5Spence K W.A theory of emotionality based drive and relation to performance in simple learning Situ-ationsthe American Psychologist,1960.
6Bloom B S.Affective outcomes of school learningPhi Delta Kappan,1977.