Indefensión aprendida

http://www.unitedexplanations.org/2014/03/28/asi-es-como-en-solo-5-minutos-esta-profesora-induce-indefension-aprendida-a-sus-alumnos/?fb_action_ids=10203270986485121&fb_action_types=og.likes&fb_source=other_multiline&action_object_map={%2210203270986485121%22%3A697526833643572}&action_type_map={%2210203270986485121%22%3A%22og.likes%22}&action_ref_map=[]