Practice and researches with ADHD children show some clinical heterogeneity within a same diagnosis? category. This review presents several (neuropsychological, developmental and psychodynamical) typology of ADHD. A closer attention will be paid to projectives methods? contributions (Rorschach) in this discussion. ADHD children consistency showed a decreased number of movement responses. By contrast, the mean numbers of responses and colour reactivity level might be discriminatory indices, which could help to think about different types of ADHD.