B. May et J. Bos, Personality characteristics of ADHD adults assessed with the millon clinical multiaxial inventory-II: Evidence of four distinct subtypes, J PERS ASSE, 75(2), 2000, pp. 237-248
This study compared the personality characteristics of 104 adults diagnosed
with attention deficit hyperactivity disorder (ADHD). Personality features
were assessed with the MCMI-II(Millon, 1987). Participants were divided in
to 4 groups based on the presence of persisting oppositional defiant disord
er (ODD) or other comorbid diagnoses (ADHD only, ADHD-comorbid, ADHD-ODD, A
DHD-ODD-comorbid). Significant differences between these groups were presen
t for 9 of the 13 MCMI-Il personality scales, resulting in 4 modal personal
ity styles. ADHD-only adults evidenced mild histrionic traits, whereas the
ADHD-comorbid group was more often avoidant and dependent in personality st
yle. ADHD-ODD adults showed histrionic, narcissistic, aggressive-sadistic,
and negativistic traits whereas the ADHD-ODD-comorbid group had a combinati
on of avoidant, narcissistic, antisocial, aggressive-sadistic, negativistic
, and self-defeating personality features. Implications for treatment are d
iscussed.