This book has three purposes. One purpose is to help students see that there are many options available to researchers for investigating behavior and that each method has a specific goal. The second purpose is to introduce students to qualitative research methods: interviewing, observation, and case studies. International Baccalaureate (IB) students taking the Higher Level (HL) course sit for Paper 3, a section of the exam about qualitative research. I weave headings throughout the chapters on qualitative research that correspond to Paper 3 learning outcomes. These IB learning outcomes are relevant for any psychology student. The third purpose is to teach students how to design a simple experiment and analyze the data. Students taking the International Baccalaureate and/or Advanced Placement exams in psychology will find what they need in this book. Research methods are probably the most difficult part of these exams. Introductory texts do not usually provide enough depth, while the typical college-level research methods books are too complicated, sometimes even for a college student's first experience with methodology.