Social psychology focuses on how social context affects our behavior. There are multiple ways in which social context shapes behavior. One is the direct effects that social context can have on the way we think, how we feel and the way we act.
Another way in which social context influences behavior is how our thoughts about other people drive our behavior. So, in contrast to cognitive psychologists, who study basic determinants of thinking, and in contrast to developmental psychologists, who study change over time across human development, social psychologists study the effects of changes across contexts or situations, particularly those that are social in nature. We study how varying contexts change the way we act with each other.