Three subjective fatigues, nervous, drowsy, exhaustion, from a factor analysis of adjectives in a pre-study, were used as dependent variables in an experimental design in which three tasks were used to elicit the fatigues (N = 184 undergraduates). Measures of motivation were also taken to show the fatigues as a product of type of task and level of motivation. Results indicated that the fatigue is a product of motivation, not task. A modification of Campbell and Fiske (1959) multitrait, multimethod analysis and a varimax factor analysis indicated that the scales possess some discriminant validity but little convergent validity which was interpreted as possibly due to low reliability of the behavioral measures.
References
1.
AnastasiA.Fields of applied psychology. New York: McGraw-Hill, 1964.
2.
AppleyM. H.CoferC. N.Motivation: Theory and research. New York: Wiley, 1964.
3.
BartleyS. H.ChuteE.Fatigue and impairment in man. New York: McGraw-Hill, 1947.
4.
BillsA. G.The psychology of efficiency. New York: Harper, 1943.
5.
CampbellD. T.FiskeD. W.Convergent and discriminant validation by the multitrait-multimethod matrix. Psychol. Bull., 1959, 56, 81–105.
6.
DuffyE.Activation and behavior. New York: Wiley, 1962.
7.
KamiyaJ.Behavioral, subjective and physiological aspects of drowsiness and sleep. In FiskeD. W.MaddiS. R. (Eds.), Functions of varied experience. Homewood, Ill.: Dorsey Press, 1961. Pp. 145–174.
8.
McNellyG. W.The development and laboratory validation of subjective fatigue scale. Unpublished Ph.D. thesis, Purdue Univer., August, 1954.
9.
MossoA.Les lois de la fatigue etudiees dans les muscles de l'homme. Arch. Ital. de Biol., 1890, 13, 123–186.
10.
PetersH. N.Affect and emotion. In MarxM. (Ed.), Theories in contemporary psychology. New York: Macmillan, 1963. Pp. 435–454.
11.
RyanT. A.Work and effort. New York: Ronald, 1947.
12.
ScottW. A.Measures of test homogeneity. Educ. psychol. Measmt, 1960, 20, 751–757.
