Complex sentence: Its effect can be similar to a cognitive bias, or can even be considered as a subcategory of such biases, with the difference that the cause lies in the affect, that divert the attention, more than in the intellect.
Split into simpler sentences: Its effect can be similar to those of a cognitive bias, it can even be considered as a subcategory of such biases. The the difference is that the cause lies in the affect, that diverts the attention of the person, more than in the intellect.