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| Description: Eighth-grade students were divided into five groups (quintiles) based on IQ scores and then followed for a year to test their academic achievement. Self-discipline was a stronger predictor of success than IQ was (Duckworth & Seligman, 2005). Picture Stats: Views: 326 Filesize: 48.1kB Height: 584 Width: 471 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=41814 |