Often making careless mistakes when having to work on uninteresting or difficult projects.
Often having difficulty keeping attention during work, or holding down a job for a significant amount of time.
Often having difficulty concentrating on conversations. - Ну, хоть этого нет. Болтать могу до бесконечности и очень сосредоточенно.
Having trouble finishing projects that have already been started.
Often having difficulty organizing for the completion of tasks.
Avoiding or delaying in starting projects that require a lot of thought.
Often misplacing or having difficulty finding things at home or at work.
Disorganized personal items (sometimes old and useless to the individual) causing excessive "clutter" (in the home, car, etc).
Often distracted by activity or noise.
Often having problems remembering appointments or obligations, or inconveniently changing plans on a regular basis.
http://en.wikipedia.org/wiki/ADHD_predominantly_inattentive