abstract aim and background: sulloway suggested that birth-order has a significant effect on personality traits, proposing first-borns children are more perfectionistic and more neurotic than later-borns. in abnormal form, perfectionism is closely associated with eating disorders and obsessive compulsive. the purpose of this study was to investigate the effect of birth-order on perfectionism, p...

Group buying is a form of electronic commerce that is growing quickly. There are many group buying sites on the Internet. Group buying is a commercial transaction in which the unit price of goods changes with the number of buyers, and a buyer can purchase goods at a low price if many buyers participate in group buying. There are several group-buying sites that are selling similar (or the same) ...

Objective: To explore the effect of comorbid obsessive-compulsive personality disorder (OCPD) on response inhibition functions in patients with obsessive-compulsive disorder (OCD). Methods: Forty-five obsessive-compulsive patients with obsessivecompulsive personality disorder (OCD + OCPD), 42 obsessivecompulsive patients without obsessive-compulsive personality disorder (OCD OCPD) and 54 health...

T price for a product may be set too low, causing the seller to leave money on the table, or too high, driving away potential buyers. Contingent pricing can be useful in mitigating these problems. In contingent pricing arrangements, price is contingent on whether the seller succeeds in obtaining a higher price within a specified period. We show that if the probability of obtaining the high pric...

We challenge the view that the presence of powerful buyers stifles suppliers’ incentives to innovate. Following Katz (1987), we model countervailing (or buyer) power as the ability of, in particular, large buyers to substitute away from a given supplier. We employ a bargaining framework and find that the presence of larger and more powerful buyers increases a supplier’s incentives to reduce mar...

Compulsive hoarding is a common and often disabling neuropsychiatric disorder. This article reviews the conceptualization, phenomenology, diagnosis, etiology, neurobiology, and treatment of compulsive hoarding. Compulsive hoarding is part of a discrete clinical syndrome that includes difficulty discarding, urges to save, excessive acquisition, indecisiveness, perfectionism, procrastination, dis...

objective: the aim of the current study was to investigate the role of fusion beliefs and metacognitions in obsessive–compulsive symptoms in the general population. methods: a sample of 200 students of kharazmi university was selected from various faculties and completed the following questionnaires: metacognitions questionnaire-30 (mcq-30), thought-fusion instrument (tfi) and maudsley obsessiv...

There are many comorbid disorders associated with autism spectrum disorders in child and adolescent population. Although obsessive compulsive disorder and autism spectrum disorders (ASD) comorbidity has common in clinical practice, there are few reports about psychopharmacological treatment for obsessive compulsive symptoms in children with ASD in the literacy. We report a successful treatment ...

objective: the study was designed to examine explicit memory bias in trait-anxiety and obsessive compulsive disorder. method: memory bias was examined in three groups of subjects: low-trait  anxious (20 subjects), high-trait anxious (20 subjects), and obsessive compulsive patients (20 subjects) in whom danger schema were activated after they were exposed the threat-related material. the trait-a...