Introduction to research methods

A very wide range of research methods are used in psychology.

Some of the approaches include:
 * Laboratory experimentation
 * Correlational research
 * Observational study, in which researchers study a population while attempting to change as little as possible.
 * Experimental study, in which researchers change a variable in the group being studied.
 * Psychometrics
 * Prospective study, in which a study samples subjects as the experiment progresses. Cf. Retrospective study.
 * Retrospective study, in which data is collected on subjects' histories at one time. Cf. Prospective study.
 * Longitudinal study, in which subjects are studied over a course of time. Cf. Cross-sectional study.
 * Cross-sectional study, in which a snapshot of the population is assumed to represent individuals as they progress through life. See also Longitudinal study.
 * Meta analysis
 * Qualitative research
 * Computer simulation
 * Concepts and Terms