As all have noted, auditory processing issues are hard to pin down, because they overlap so much with, well, everything, and most especially ADHD.
The list you have above is particularly generic, in that it focuses on impacts more than symptoms. Before deciding whether you need assessment or not, it would be worth surfing some more in-depth descriptions which pin down some of the more unique-to-ADP issues.
A first question would be, do you find he often seems to hear something quite different than what was said to him? In particular, when he IS listening and engaged, does he
still seem to make errors in understanding what was asked of him? Does he answer the wrong question? Do you see frustration in him because he is trying to understand what you say, but can’t, because something is garbled in the translation? What you’re looking for isn’t whether he can stay on task or know how to implement directions, for instance, but rather whether he heard the wrong directions in the first place, even when listening carefully. Does he ask you to repeat yourself a lot?
And if so, does the problem get noticeable worse when there are any kind of competing noise sources, like other people in the room, or TV on, or outdoors or in a restaurant, for example?
Unfortunately, ADP is not particularly remediable, but it can be accommodated. Evidence is poor regarding best practice (but it's a little more complicated than noise-cancelling headphones, alas).
Here’s a couple of sites I have used that seem fairly reliable for starter info:
http://kidshealth.org/parent/medical/ears/central_auditory.html# http://www.asha.org/public/hearing/Understanding-Auditory-Processing-Disorders-in-Children/ http://hearingloss.ca/pdf/Auditory%20Processing%20Disorders.pdfHope this helps!
