My research choice focused on children's play behaviors and aggression. Breaking it down further, behavior is about the psychology and psyche of each individual. The definition of psychology is “science of mind and behavior” (Clavijo, 2013). After reading Clavijo's article, I realized that psychology can be defined in three ways: the study of the mind, the study of behavior, and the study of mind and behavior. In Berger's “The Developing Person,” behavior is learned through social learning. Children learn different behaviors through observation of others, others are children and adults. Different people have effects on a child's life that can influence their behavior. A child's behavior is greatly influenced by his parents. A son may speak aggressively and disrespectfully towards his mother because this is the way his father speaks to her and therefore he feels that this is how he communicates with his mother (Berger, 200, 2012). Moving on to play behaviors, children learn from other children how to play. Many believe that cognitive growth depends on a child's playtime. Vygotsky and Piaget both believe that when children play it is beneficial, but according to Vygotsky, play allows a child to think outside the box and create their own meaning from objects, using their imagination. Piaget believes that children benefit from playing together because they are children and share their knowledge and make ideas and thoughts more concrete. There are four game phases, the fourth is the most complicated and consists of rules and guidelines for the game. The lowest level of play would be functional play in which children shake rattles, clap their hands or blow... into the middle of a sheet of paper... hitting, expressing anger with words or violent acts. Simply turning her head and throwing a tantrum can be seen as aggression because Girl 2 is unable to communicate that she does not agree with the rules, so she removes herself from the situation and does not return until the game it doesn't go the right way and in his favor. Discussion: In this article I learned that children base their actions on what they learned from their parents. In my findings, I could see that Girl 1 treated Girl 2 like her mother, meaning that Girl 1 cared for Girl 2 as if she were a small child and she was an older, more mature child. Girl 2 also reacted in a way that was considered aggressive to get what she wanted. The most interesting thing to me in this whole observation is that Berger was right that behavior is learned through the actions of parents (Berger, 200, 2012).