what methods do cognitive psychologists use
List of psychological research methods. From Wikipedia, the free encyclopedia. A wide range of research methods are used in psychology. These methods vary by the sources of information that are drawn on, how that information is sampled, and the types of instruments that are used in data collection.Methods also vary by whether they collect qualitative data, quantitative data or both.hese methods vary by the sources of information that are drawn on, how that information is sampled, and the types of instruments that are used in data collection.