Right brain dominance
I can't focus well on things that don't interest me, but I have a deep focus on things that do interest me. I often think about them long after I need to.
I often overconcentrate, being too deeply involved in some task of interest
I often underconcentrate, being unable to put adequate time/effort in an uninteresting task
I often under- and overconcentrate, finding it difficult to concentrate appropriately
I rarely over- or underconcentrate