| Angela L Duckworth Self-discipline outdoes IQ in predicting academic performance of adolescentsAngela L Duckworth Positive Psychology Center, University of Pennsylvania, Philadelphia, PA 19104, USA Psychol Sci 16:939-44. 2005 Grit: perseverance and passion for long-term goalsAngela L Duckworth Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA J Pers Soc Psychol 92:1087-101. 2007 (Over and) beyond high-stakes testingAngela L Duckworth Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA Am Psychol 64:279-80; discussion 285-7. 2009 Can adolescents learn self-control? Delay of gratification in the development of control over risk takingDaniel Romer Annenberg Public Policy Center, University of Pennsylvania, Philadelphia, PA, USA Prev Sci 11:319-30. 2010
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