TY - JOUR
T1 - Face and Object Perception in Body Dysmorphic Disorder versus Obsessive-Compulsive Disorder
T2 - The Mooney Faces Task
AU - Toh, Wei Lin
AU - Castle, David J.
AU - Rossell, Susan L.
PY - 2017/7/1
Y1 - 2017/7/1
N2 - Objectives: Body dysmorphic disorder (BDD) is characterized by repetitive behaviors and/or mental acts occurring in response to preoccupations with perceived defects or flaws in physical appearance. There are some similarities, but also important differences, between BDD and obsessive-compulsive disorder (OCD), not just in terms of core clinical symptoms, but possibly in the domain of perception. This study compared the nature and extent of perceptual anomalies in BDD versus OCD and health controls (HC), using a modified Mooney task. Methods: We included 21 BDD, 19 OCD, and 21 HC participants, who were age-, sex-, and IQ-matched. A set of 40 Mooney faces and 40 Mooney objects arranged in three configurations (i.e., upright, inverted, or scrambled) were presented under brief (i.e., 500 ms) free-viewing conditions. Participants were asked to decide whether each image represented a human face, an object, or neither in a forced-choice paradigm. Results: The BDD group showed significantly reduced face and object inversion effects relative to the other two groups. This was accounted for by BDD participants being significantly more accurate in identifying inverted Mooney faces and objects than the other participants. Conclusions: These data were interpreted as reflecting an overreliance on independent components at the expense of holistic (configural) processing in BDD.
AB - Objectives: Body dysmorphic disorder (BDD) is characterized by repetitive behaviors and/or mental acts occurring in response to preoccupations with perceived defects or flaws in physical appearance. There are some similarities, but also important differences, between BDD and obsessive-compulsive disorder (OCD), not just in terms of core clinical symptoms, but possibly in the domain of perception. This study compared the nature and extent of perceptual anomalies in BDD versus OCD and health controls (HC), using a modified Mooney task. Methods: We included 21 BDD, 19 OCD, and 21 HC participants, who were age-, sex-, and IQ-matched. A set of 40 Mooney faces and 40 Mooney objects arranged in three configurations (i.e., upright, inverted, or scrambled) were presented under brief (i.e., 500 ms) free-viewing conditions. Participants were asked to decide whether each image represented a human face, an object, or neither in a forced-choice paradigm. Results: The BDD group showed significantly reduced face and object inversion effects relative to the other two groups. This was accounted for by BDD participants being significantly more accurate in identifying inverted Mooney faces and objects than the other participants. Conclusions: These data were interpreted as reflecting an overreliance on independent components at the expense of holistic (configural) processing in BDD.
KW - Body
KW - Body dysmorphic disorder
KW - Face
KW - Humans
KW - Obsessive-compulsive disorder
KW - Physical appearance
KW - Visual perception
UR - http://www.scopus.com/inward/record.url?scp=85021132603&partnerID=8YFLogxK
U2 - 10.1017/S1355617717000327
DO - 10.1017/S1355617717000327
M3 - Article
C2 - 28528596
AN - SCOPUS:85021132603
SN - 1355-6177
VL - 23
SP - 471
EP - 480
JO - Journal of the International Neuropsychological Society
JF - Journal of the International Neuropsychological Society
IS - 6
ER -
