1) The document discusses several philosophical theories including linguistic philosophy, constructivism, essentialism, existentialism, perennialism, and behaviorism.
2) It provides descriptions of each theory, explaining their key concepts and methodology. For example, it states that constructivism is a learning theory where people produce knowledge based on experiences.
3) The document also includes sections on the philosophy of language, linguistics, essentialism in gender, and behaviorism's proposition that behavior can be understood without inner mental states. It aims to define and compare different philosophical perspectives.