The objective of this present is to test the effects of the parents' parenting patterns, education, jobs, and assistance to children in watching television on the children's aggressive behavior. This present research employed a quantitative approach with an ex-post factor design. The data were collected from 175 parents of which the children showed aggressive behavior. The children were studying at formal and non-formal Early Age Children Education in Magelang city. The data were obtained using: 1) questionnaires: the parents' parenting patterns, education, jobs, assistance to their children in watching television; 2) interviews: teachers to understand children with aggressive behavior, and 3) Observation: children with aggressive behavior. The data were then analyzed using statistical techniques: descriptive, regression, chi-square and t-test. The results of the analysis showed that there was a significant effect of parenting patterns, education, jobs, and assistance of the parents to the children in watching television on the children's aggressive behavior. And there was a significant difference in the aggressive behavior between boys and girls where it is the boys who showed more aggressive behavior.