TY - JOUR
T1 - Personality-based subtypes of anorexia nervosa
T2 - Examining validity and utility using baseline clinical variables and ecological momentary assessment
AU - Lavender, Jason M.
AU - Wonderlich, Stephen A.
AU - Crosby, Ross D.
AU - Engel, Scott G.
AU - Mitchell, James E.
AU - Crow, Scott J.
AU - Peterson, Carol B.
AU - Le Grange, Daniel
N1 - Funding Information:
This research was supported by R01 MH059674 and T32 MH082761 from NIMH , and P30 DK50456 from NIDDK .
PY - 2013/8
Y1 - 2013/8
N2 - Objective: This study sought to empirically derive and validate clinically relevant personality-based subtypes of anorexia nervosa (AN). Methods: Women (N=116) with full or subthreshold AN completed baseline measures of personality, clinical variables, and eating disorder (ED) symptoms, followed by two weeks of ecological momentary assessment (EMA). A latent profile analysis was conducted to identify personality subtypes, which were compared on baseline clinical variables and EMA variables. Results: The best-fitting model supported three subtypes: underregulated, overregulated, and low psychopathology. The underregulated subtype (characterized by high Stimulus Seeking, Self-Harm, and Oppositionality) displayed greater baseline ED symptoms, as well as lower positive affect and greater negative affect, self-discrepancy, and binge eating in the natural environment. The overregulated subtype (characterized by high Compulsivity and low Stimulus Seeking) was more likely to have a lifetime obsessive-compulsive disorder diagnosis and exhibited greater perfectionism; levels of negative affect, positive affect, and self-discrepancy in this group were intermediate between the other subtypes. The low psychopathology subtype (characterized by normative personality) displayed the lowest levels of baseline ED symptoms, co-occurring disorders, and ED behaviors measured via EMA. Conclusions: Findings support the validity of these personality-based subtypes, suggesting the potential utility of addressing within-diagnosis heterogeneity in the treatment of AN.
AB - Objective: This study sought to empirically derive and validate clinically relevant personality-based subtypes of anorexia nervosa (AN). Methods: Women (N=116) with full or subthreshold AN completed baseline measures of personality, clinical variables, and eating disorder (ED) symptoms, followed by two weeks of ecological momentary assessment (EMA). A latent profile analysis was conducted to identify personality subtypes, which were compared on baseline clinical variables and EMA variables. Results: The best-fitting model supported three subtypes: underregulated, overregulated, and low psychopathology. The underregulated subtype (characterized by high Stimulus Seeking, Self-Harm, and Oppositionality) displayed greater baseline ED symptoms, as well as lower positive affect and greater negative affect, self-discrepancy, and binge eating in the natural environment. The overregulated subtype (characterized by high Compulsivity and low Stimulus Seeking) was more likely to have a lifetime obsessive-compulsive disorder diagnosis and exhibited greater perfectionism; levels of negative affect, positive affect, and self-discrepancy in this group were intermediate between the other subtypes. The low psychopathology subtype (characterized by normative personality) displayed the lowest levels of baseline ED symptoms, co-occurring disorders, and ED behaviors measured via EMA. Conclusions: Findings support the validity of these personality-based subtypes, suggesting the potential utility of addressing within-diagnosis heterogeneity in the treatment of AN.
KW - Affect
KW - Eating disorders
KW - Ecological momentary assessment
KW - Empirical classification
KW - Latent profile analysis
KW - Personality
UR - http://www.scopus.com/inward/record.url?scp=84879352575&partnerID=8YFLogxK
U2 - 10.1016/j.brat.2013.05.007
DO - 10.1016/j.brat.2013.05.007
M3 - Article
C2 - 23792181
AN - SCOPUS:84879352575
SN - 0005-7967
VL - 51
SP - 512
EP - 517
JO - Behaviour Research and Therapy
JF - Behaviour Research and Therapy
IS - 8
ER -