People who experience learned helplessness often attribute their successes to instead of effort.

inability  

Explanation:

Learned helpless is a behavioral state or mental state of a person where the person is forced bear a stressful situation or stimuli that is painful and  unpleasant. He experience the aversive situation repeatedly. The person concludes to believe that he or she is not able to control the situation or even change it and so they do not even try to control it.

People who developed this, attributes their failures to ability as they attributes their success to inability or incapacity instead of the effort.

Martin E.P. Seligman developed and conceptualized the theory of learned helplessness.