Complex sentence: It is a counter-example to the fundamental attribution error as according to the extrinsic bias others are presumed to have "situational" motivations while oneself is seen as have "dispositional" motivations, the opposite of what the fundamental attribution error would predict.
Split into simpler sentences: It is a counter-example to the fundamental attribution error as according to the extrinsic bias others are presumed to have "situational" motivations while oneself is seen as have "dispositional" motivations. This is the opposite of what the fundamental attribution error would predict.