Sociology is the study of how people live together in groups and societies. Sociologists examine why people behave differently in crowds than when they're alone, how friendships form, why some neighborhoods feel close-knit while others don't, and how rules and expectations shape our choices.

A sociologist might study why certain fashion trends spread through a school, how families have changed over the past century, or why people in different countries have different ideas about politeness. They look for patterns in human behavior: Do students sit with the same groups every day at lunch? Why? How do new students find their place in an established classroom? What makes some teams work well together while others struggle?

Unlike psychology, which focuses on individual minds, sociology examines the bigger picture of how people influence each other and create cultures, communities, and social structures. Sociologists use surveys, observations, and statistics to understand these patterns.

When you notice that everyone in your class suddenly starts using the same phrase, or you wonder why your grandparents' school experience was so different from yours, you're thinking like a sociologist.