Research On The Attentional Bias Of OCD Patients With Different Subtypes

Objective:(1) Making use of the emotional stroop task, we investigated the differences of the attentional bias in the patients with the obsessive-compulsive disorder and the healthy volunteers.(2) Discuss the different subtypes of OCD patients on emotional stroop task performance whether has the different characteristics of attention bias.Methods:This study subjects included a group of patients with obsessive-compulsive disorder (OCD) and normal control group.The OCD group are from the Psychological clinic of xiangya2nd hospital and Hunan province brain hospital between June2012to March2014. Normal control group subjects is a university student as well as social workers. We use Yale Brown Obsessive-Compulsive Scale、Beck Depression Inventory、State-Trait Anxiety Scale and Yale-Brown Obsessive Compulsive Scale-symptom list to measure all subjects. We divided OCD patients into groups based on Yale-Brown Obsessive Compulsive Scale-symptom list and clinical interviews. Using the Chinese emotional words system (CAWS) as stimulus material. We select the current common experimental paradigm for attentional bias-emotional STROOP task to measure all the subjects. Using Repeated ANOVA to analyze the response error rate on two groups of participants and the subtype group. Using independent sample t test respectively to compare attention bias of two groups on positive emotions and negative emotions vocabulary. Using single factor ANOVA respectively to compare attention bias of four subtype group and control group on the positive emotion and negative emotion words.Results:(1) Yale-Brown total scores and subscale scores (obsessions scores and compulsions scores) of Obsessive-compulsive disorder group were significantly higher than the control group’s. And scores on the Beck Depression Inventory, State Anxiety Scale and Trait Anxiety Scale were also significantly higher than the control group.(2) Compared with normal subjects, the participants type、vocabulary type and the interaction of subjects type and vocabulary type have no significant difference on92patients with OCD’s response error rate. OCD group and control group of positive emotion vocabulary attention bias have no significant difference (p>0.05); The attentional bias of OCD group on negative emotional words is significantly higher than normal control group (p<0.05).(3) Yale-Brown scale scores、the compulsion scores、the obsessions scores、the Beck Depression Inventory scores, State Anxiety Scale scores, Trait Anxiety Scale scores on four subtype groups of OCD patients are significantly higher than normal control group. The anxiety、depression and YBOCS scale score in four subtypes of OCD group have no significant difference (p>0.05).(4)The participants type、vocabulary type and the interaction of subjects type and vocabulary type have no significant difference between four groups of OCD patient and30case of normal subjects’response error rate. The attentional bias of4subtype group and control group on positive emotional words have no significant difference (p>0.05). The attentional bias of4subtype group and control group on negative emotional words have significantly difference. The attentional bias of compulsive checking group on negative emotional words is significantly higher than compulsive washing group (p<0.05) and normal control group (p<0.05).Conclusion：(1) The patients with OCD show the attention bias phenomenon on negative emotional words.(2) Patients with different subtypes of OCD appear the different behavior features of attention bias. Compulsive checking groop show attention bias on negative emotional vocabulary, while the remaining subtype groups do not exist this phenomenon.