Choose a meaningful sample, ask the right questions, prepare an experiment professionally, and design a survey to ensure the results are representative. If you are researching as a psychologist or social scientist, there are a number of empirical methods you should be familiar with. When it comes to experiments, surveys, observations, and psychological tests, there are several factors to consider to ensure that the results are significant. Martin Dempster and Donncha Hanna will guide you from selecting the research design to presenting the results, explaining the difference between qualitative and quantitative approaches, internal and external validity, and much more. This will help ensure that your next experiment is successful and that your survey yields meaningful results.