A learning impediment ('learning bug') is some condition or feature that impedes (block/slows) intended learning.
It may be unhelpful to see learning impediments as a flaw in the learner: they are better seen as bugs in the teaching-learning system, often due to a lack of match between the interpretive resources he teacher expects student to have available, and those they actually engage in the learning situation.
Read about the typology of learning impediments
