People who suffer from obsessive compulsive disorder (OCD) are worried by certain distressing thoughts and feel obliged to carry out certain behaviors. Compulsive acts usually block the anxiety caused by the obsession. Obsessions are bothersome images, thoughts, or impulses that invade a person's stream of consciousness. Compulsions are repetitive behaviors that a person feels compelled to carry out. There are various themes of obsessions and compulsions, the most common being contamination, order/symmetry, harm or injury, sex, violence, and religion (Taylor et al., 2010). Research states that learning through developmental (parent-child) relationship interactions can explain the onset of OCD symptoms in adulthood. There are three styles of parental authority, including permissive, authoritarian, and authoritarian, which differ in the dimensions of parenting and behavioral control. Parents who use the permissive style allow their children to do what they want with little discipline, while authoritative parents use reasonable guidelines while providing a nurturing environment. The authoritarian style is parenting that values ​​strict adherence to rules with low levels of care. The researchers' findings indicate that authoritarian parenting style was associated with both OC symptoms and OC beliefs (Timpano, 2010). Current research aims to find the origins of dysfunctional cognitions that have been shown to be involved in both adults and adults. forms of obsessive compulsive disorder in children. This study addresses two limitations of the method, comparing OCD-related maladaptive beliefs in individuals with OCD and their family members. The sample consisted of children diagnosed with OCD, rather than unselected adolescents (Jacobi et al., 2006) or adults with OCD (Rector et al., 2009). Beliefs in the pediatric OCD sample were examined in relation to a group of first-degree relatives (mothers). The present study then applied measures of OCD-related beliefs to assess cognitions in children and their mothers. A children's version of the 44-item adult obsessive beliefs questionnaire allowed comparisons of dysfunctional beliefs in children and their parents (Coles and colleagues, 2009). With the research conducted by Jacobi et al. (2006) and Rettore et al. (2009), hypothesized that the relationship between mother and child beliefs regarding threat and responsibility would be positively related. Based on Coles and colleagues' (2009) findings, they hypothesized that correlations between mother and child beliefs about the importance and need to control thoughts would also be positive. The data presented are from the first study that investigated the relationship between OCD-related beliefs in children with OCD and their biological parents (mothers).