| Obsessive-compulsive disorder (OCD) is a mental disorder characterized by obsessions and compulsions. Living in the real society, the patients often perceive an intense conflict between compulsion and anti-compulsion, which have received some attention from researchers. It is assumed that the core component of the conflict is the motivational conflict between social motivation and security motivation. The developer of double conflicts model analyzed the roles of psychological trauma and emotion regulation in OCD and offered a novel and comprehensive explanation from a perspective of motivational conflict. Its basic assumptions of compulsion were that (a) compulsion is just a kind of compromised security behavior,(b) motivational conflict affects the selection of security behaviors. When motivational conflict was high, the OCD patients would make compulsion the only choice. To confirm the assumptions, experiments together with survey were carried out in the current study, using both OCD patients and healthy subjects. Considering the maneuverability of the study and the reality of hospital clinical conditions, we chose the OCD patients with compulsive washing and obsessive thinking.Part1:Study1explored the regulation and characteristics of OCD patients and the healthy people.44OCD patients who came from several hospitals and30healthy people participated this study. And a5(pollution level:10%、30%、50%、75%and100%)×2(value level:high、medium and low) two-factor mixed design was employed. The motivational conflicts were made between pollution levels and value levels. The results showed that:the scores of PI、BAI and BDI of OCD patients and healthy peoples had significant differences, the OCD patients with compulsive washing as main symptom got higher scores than the other OCD patients; the latter got significant higher scores the healthy people. The larger pollutions percentage was, the longer all patients’RT were. The OCD patients and the healthy peoples showed similar RT regulations. The low motivational conflicts occurred when the cheapest goods were100%polluted while the high motivational conflicts occurred when the dearest goods were75%polluted.Part2:In order to confirm the compulsory behavior model by exploring the effects which motivational conflicts had on the decision process of OCD patients and the healthy person., a2(motivational conflict level:high/low)×3(subject style:OCD patients with compulsive washing/OCD patients with obsessive thinking/the healthy person) two-factor mixed design was employed. The results showed that:the motivational conflicts、the subject styles and the numbers of each choices had significant interaction effects. Under high motivational conflict condition, the OCD patients with compulsive chose much more "Repeated Washing" than the OCD patients with obsessive thinking. However, the two kinds patients’ chooses had no significant differences on the low motivational conflict cases. Totally, the levels of motivational conflicts have dramatic effect on the obsessive behavior.Main conclusions of this study were:(1) Facing the motivational conflict between safety motivation and social motivation, the response time of all OCD patients and healthy people showed a similar pattern. High motivation conflict occurred in the H-75while low motivation conflict occurred in the L-100.(2) On different motivation conflicts conditions, the compulsive washing patients、the obsessions thinking patients and the healthy people chose different safe behavior selections. In the case of high motivation conflicts, the compulsive washing patient group chose more "Repeated Washing" than the obsessions thinking patients. While with low motivation conflict, the two groups showed no significant differences in selecting this choice. Conflicts of motivations lead OCD patients with compulsive washing to choose and show obsessive-compulsive behavior. Based on these results, the sub-model of the dual conflict theory model of compulsive behavior had been proved. |
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