Stanford Prison Experiment

Zimbardo talks about what he refers to as the “bad apple – bad barrel” question. Are evil acts the sole result of “bad apples” – individuals who are simply, by nature, evil – or are there also situational and systemic factors – “bad barrels” – that can cause even good, decent people to carry out, support or tolerate evil acts?

Site References:)


  1. Bear, Mark F., Barry W. Connors, and Michael A. Paradiso. Neuroscience: Exploring the Brain. Philadelphia, PA: Lippincott Williams & Wilkins, 2007. Print.
  2. Kenneth Saladin. Anatomy & Physiology: The Unity of Form and Function. McGraw-Hill Science, 2006. Print.
  3. Klug, Cummings, Spencer, Palladino. Concepts of Genetics. 10th ed, Pearson Education, 2012, 2009, 2006. Print
  4. John P. J. Pinel. Biopsychology. 8th ed. Boston: Allyn & Bacon, 2011. Print
  5. Hogg, Vaughan. Social Psychology. 6th ed. Essex: Pearson. 2011. Print
  6. Crisp, Turner. Essential Social Psychology. 2nd ed.  Sage: London. 2010. Print
  7. Krebs, Davis. Behavioural Ecology. 4th ed, Blackwell. 1997. Print
  8. PSY108 Neuroscience and Evolution. University of Sheffield, Richard Roberts Building. Available from: Blackboard.
  9. PSY104 Methods and Reasoning for Psychologists. University of Sheffield, Richard Roberts Building. Available from: Blackboard.

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