If I told you that the world is flat, I’m hoping you would know that I’m wrong. But how do you know that I’m wrong? And why did people once believe that they knew that the world was flat? Presumably the shape of the earth did not change dramatically in the time that we went from “knowing” one thing about it to knowing the other; however, something certainly changed our minds. Understanding both what changed our minds (science) and how might tell us a lot about what we know, what we think we know, and what we think we can know.

This book is dedicated to understanding exactly how it is that we know what we know. More specifically, we will examine the ways that social scientists come to know social facts. Our focus will be on one particular way of knowing: social scientific research methods. Research methods are a systematic process of inquiry applied to learn something about our social world. But before we take a closer look at research methods, let’s consider some of our other sources of knowledge.

Different Sources of Knowledge

What do you know about only children? Culturally, our stereotype of children without siblings is that they grow up to be rather spoiled and unpleasant. We might think that the social skills of only children will not be as well developed as those of people who were reared with siblings. However, sociological research shows that children who grow up without siblings are no worse off than their counterparts with siblings when it comes to developing good social skills (Bobbitt-Zeher & Downey, 2010). Social scientists consider precisely these types of assumptions that we take for granted when applying research methods in their investigations. Sometimes we find that our assumptions are correct. Often as in this case, we learn that the thing that everyone seems to know to be true isn’t so true after all.

Many people seem to know things without having a scientific background relevant to the topic. Of course, there are a variety of ways we know things that don’t involve scientific research methods. Some people know things through experiences they’ve had, but they may not think about those experiences systematically; others believe they know things based on selective observation or overgeneralization; still others may assume that what they’ve always known to be true is true simply because they’ve always known it to be true. Let’s consider some of these alternative ways of knowing before focusing on social-scientific ways of knowing.

Many of us know things simply because we’ve experienced them directly. For example, you would know that electric fences can be pretty dangerous and painful if you touched one while standing in a puddle of water. We all probably have times we can recall when we learned something because we experienced it. If you grew up in Quebec, you would observe plenty of kids learn each winter that it really is true that one’s tongue will stick to metal if it’s very cold outside. Similarly, if you passed a police officer on a two-lane highway while driving 50% over the speed limit, you would probably learn that that’s a good way to earn a traffic ticket. So direct experience may get us accurate information but only if we’re lucky (or unlucky, as in the examples provided here). In each of these instances, the observation process isn’t really deliberate or formal. Instead, you would come to know what you believe to be true through informal observation. The problem with informal observation is that sometimes it is right, and sometimes it is wrong. And without any systematic process for observing or assessing the accuracy of our observations, we can never really be sure that our informal observations are accurate.

Suppose a friend of yours declared that “all men lie all the time” shortly after she’d learned that her boyfriend had told her a fib. The fact that one man happened to lie to her in one instance came to represent all experiences with all men. But do all men really lie all the time? Probably not. If you prompted your friend to think more broadly about her experiences with men, she would probably acknowledge that she knew many men who, to her knowledge, had never lied to her and that even her boyfriend didn’t generally make a habit of lying. This friend committed what social scientists refer to as selective observation by noticing only the pattern that she wanted to find at the time. If, on the other hand, your friend’s experience with her boyfriend had been her only experience with any man, then she would have been committing what social scientists refer to as overgeneralization, assuming that broad patterns exist based on very limited observations.

Another way that people claim to know what they know is by looking to what they’ve always known to be true. There’s an urban legend about a woman who for years used to cut both ends off of a ham before putting it in the oven (Mikkelson & Mikkelson, 2005). She baked ham that way because that’s the way her mother did it, so clearly that was the way it was supposed to be done. Her mother was the authority, after all. After years of tossing cuts of perfectly good ham into the trash, however, she learned that the only reason her mother ever cut the ends off ham before cooking it was that she didn’t have a pan large enough to accommodate the ham without trimming it.

Without questioning what we think we know to be true, we may wind up believing things that are actually false. This is most likely to occur when an authority tells us that something is so (Adler & Clark, 2011). Our mothers aren’t the only possible authorities we might rely on as sources of knowledge. Other common authorities we might rely on in this way are the government, our schools and teachers, and our churches and ministers.

Although it is understandable that someone might believe something to be true because someone he or she looks up to or respects has said it is so, this way of knowing differs from the sociological way of knowing, which is our focus in this text.

In sum, there are many ways that people come to know what they know. These include informal observation, selective observation, overgeneralization, authority, and research methods. Table 1.1 “Several Different Ways of Knowing” summarizes each of the ways of knowing described here. Of course, some of these ways of knowing are more reliable than others. Being aware of our sources of knowledge helps us evaluate the trustworthiness of specific bits of knowledge we may hold.

Table 1.1 Several Different Ways of Knowing