Behavior it includes not only the conscious behavior and activities of the human mind but also the subconscious and unconscious. Consequently, it covers not only the overt behavior but also the covert behavior involving in new experiences and mental processes. Only children have poorer interpersonal skills, which results in less effective or fulfilling relationships. The behavior pattern of a child can be affected by physical illness, changes at school, with the family unit, peer group pressure and simply growing up and finding their feet. Methods: The quantitative research approach was adopted for this study. A comparative research design was used in this study. This study was conducted in selected areas of urban communities. A convenience sampling technique was used for sample selection. The samples consist of 40 children in the age group of 6-12 years. Among them, 20 samples were a single child and 20 samples were a child with siblings who fulfilled the inclusion criteria. Results: Behavior pattern was classified as good, average, and poor. The majority of single children 33 (66%) had an average behavior pattern. Sibling child 15 (70%) good behavior pattern. There was a significant association between the behavior pattern of a single child and selected demographic variables such as type of family, parenting style, and a number of children. There was no significant association between the behavior pattern of the single child and demographic variables such as age, educational status, and birth order. Conclusion: The childhood period is important in life. During this period, the child undergoes markable changes in their life. Parents and school teachers have to understand the child's problems and solve them. Many single children have poor interpersonal skills, which results in less effective relationships. The parents must realize their problem and mingle with them.