Psychology can be a hard subject to study because everyone possesses some basic knowledge about human behavior that they have developed simply by being alive. People are constantly checking new information they learn about psychology against what they already know; this can be problematic, especially when what they think they know is wrong or missing data. When studying psychology, it’s crucial to remember that there’s no one generic type of person—it may be more helpful to think of people as many different subtypes that can be further shaped by individual experiences. In addition, individual psychologists frequently lack a common framework and find it difficult to build on each other’s work as a result.