Survey (human research)
Survey research is often used to assess thoughts, opinions, and feelings. Surveys can be specific and limited, or they can have more global, widespread goals. Psychologists and sociologists often use surveys to analyze behavior, while it is also used to meet the more pragmatic needs of the media, such as, in evaluating political candidates, public health officials, professional organizations, and advertising and marketing directors. A survey consists of a predetermined set of questions that is given to a sample. With a representative sample, that is, one that is representative of the larger population of interest, one can describe the attitudes of the population from which the sample was drawn. Further, one can compare the attitudes of different populations as well as look for changes in attitudes over time. A good sample selection is key as it allows one to generalize the findings from the sample to the population, which is the whole purpose of survey research.
Couple interview
A couple interview (or joint couple interview, or more broadly conjoint interview, joint interview or dyadic interview) is a method of qualitative research used in the social sciences, where two spouses are interviewed together. Such an interview is typically semi-structured or unstructured. Couple interviews are important in household research, often from a psychological, sociological, anthropological or social geographical perspective, and are also frequently used within health research. A couple interview is a form of joint interviewing (interviews involving two interviewees), the subject of a growing methodological research literature.