Alternative and Null Hypothesis The purpose of any research is to determine if your theory is true or not based on statistical analysis. A theory is an A research hypothesis (H1). Types of Investigations and Research Design. You are here. A-level » Psychology » Research Methods. Register Free. Psychology experiments can range from simple to complex. Learn more about types of research, experimental design, and relationships between variables. Summary of various research methods used in psychology. Including experiments, observation, interviews, case study method. Research psychology encompasses the study of behavior for use in academic settings, and contains numerous areas. It contains the areas of abnormal psychology. Home › Research Methods › Aims and Hypotheses. The null hypothesis states that these will be no significant. Simply Psychology; Psychology Research Methods. Key concepts of the research methodology. Understanding the significance of the Scientific Method. Before conducting psychology research, it is important to start with a testable hypothesis. 101cats / Getty Images A summary of The Scientific Method in 's Research Methods in Psychology. Learn exactly what happened in this chapter, scene, or section of Research Methods in. The Purpose of Null Hypothesis Testing. As we have seen, psychological research typically involves measuring one or more variables for a sample and computing.