Julian Rotter and Walter Mischel both theorized that cognitive aspects, rather than direct reinforcers, establish human reactions to environmental influences. Both psychologists propose that human expectations regarding upcoming events are major factors in determining human performance. Recognized for his cognitive social learning model of personality, Mischel's theory focuses on the particular cognitive variables that intervene in how new experiences affect a person (Feist & Feist, 2009). The premise of Julian Rotter's theory of cognitive social learning is that humans learn from watching others, and in the course of observation others imitate different behaviors. The central premise underlying his theory is that an individual's probability of “engaging in a set of functionally related behaviors in a given psychological situation is a joint function of (1) the person's expectation that the behaviors lead to a particular result in that situation." situation and (2) the value of the outcome to the person in that situation” (Wallston, 1992, p. 184). The five fundamental hypotheses of Rotter's interactionist hypothesis: 1. Human behavior is the result of the interaction of environmental and private factors. 2. Individual character traits are learned and can be altered or adapted as long as learning continues. 3. Personality and human traits are essentially stable. 4. Human motivations are goal-directed. 5. Human beings have the ability to anticipate events and are therefore able to modify environments and individual traits (Feist & Feist, 2009). The formula for predicting human behavior embodies an optimistic rather than realistic calculation method. It is not possible to determine the exact values ​​(Feist & Feist, 2009). Other researchers...... half of article....... Dougherty, CM, Johnston, SK, & Thompson, EA (2007). Reliability and validity of self-efficacy expectations and outcome expectations after implantable cardioverter defibrillator implantation. Applied Nursing Research, 20(3), 116-124. doi:10.1016/j.apnr.2007.04.004.Feist, J., & Feist, G. (2002). Theories of personality (5th ed.). New York: McGraw Hill. Feist, J., & Feist, G. (2009). Theories of personality (7th ed.). New York: McGraw Hill.Isom, M.D. (1998). Social learning theory. Retrieved June 14, 2011, from http://www.criminology.fsu.edu/crimtheory/bandura.htmlOrmrod, J. E. (1999). Human learning (3rd ed.). Upper Saddle River, NJ: Prentice-Hall.Wallston, K. and A. (1992). Hocus-pocus, the focus is not strictly on the locus: Rotter's social learning theory modified for health. Cognitive therapy and research, 16( 2), 183-199.