Like any area of research, developmental science requires theory formulation for any study. The reason why theory is critical is that it allows researchers to have a frame of reference and guidance in a particular study. Indeed, developing a hypothesis requires a deep understanding of a specific topic. For example, scholars may want to check a theory about the influence of video games on children’s level of anxiety later in life.
Moreover, there are established theories in developmental science that describe early-life experiences’ impact on adult behavior. Specifically, these theories describe various aspects of human life, including socialization, learning, stress management, and attachment. For instance, attachment theory describes the influence of normal and dysfunctional care on infants’ type of attachment to people. The sociocultural theory states that children need practical experience to learn information faster. Overall, every theory in this field tries to explain a child’s cognitive and psychological development through the lens of social and environmental influence.