A friendly and accessible, one-of-a-kind guide to psychological research methods, Your A to Z of Research Methods and Statistics in Psychology covers over 500 key terms and explores the concepts you need to navigate quantitative and qualitative methods in psychology with ease. From a priori comparisons to z scores, it forms the perfect companion to your core research methods and statistics textbook, and is an indispensable revision guide. Terms are clearly and engagingly defined, and the authors use a selection of helpful student tips, research examples, and eye-catching figures to enrich the text. You can also refer to a comprehensive decision chart to choose the most appropriate statistical test for your analysis, and consult a range of essential tables at the back of the text.