5Kofta M, Sedek G. Egotism Versus Generalization of Uncontrollability Explanations of Helplessness: Reply to Snyder and Frankel[J]. Journal of Experimental Psychology, 1989, (4): 413-416.
6Sedek G, Kofta M. When Congnitive Exertion Does Not Yield Cognitive Gain: Toward an Informational Explanation of Learned Helplessness[J]. Journal of Personality and Social Psychology, 1990, (4) :729-743.
7Sedek G, Kofla M, Tyszka T. Effects of Uncontrollability on Subsequent Decision Making: Testing the Congnitive Exhaustion Hypothesis[J]. Journal of Personality and Social Psychology,1993, (6) : 1270-1281.
8Dweck, C.S. Motivational Process Affecting Learning [ J ]. American Psychologist, 1986, (41) : 148-156.
9Tomas Witkowski, Joachim Stiensmeier-Pelster. Performance Deficits Following Failure: Learned Helplessness or Self-esteem Protection? [J]. British Journal of Social Psychology, 1998, (37) :59-71.
10Zeynep Cemalcilar, Resit Canbeyli, Diane Sunar. Learned Helplessness, Therapy, and Personality Traits: An Experimental Study[ J]. The Journal of Social Psychology, 2003, (1) :65.
