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The types of research methods in Psychology are quantitative or qualitative research methods. The former uses statistical analysis in testing hypotheses, while the latter does not employ statistical methods and analyses. Examples of these research methods are Descriptive, Correlational and Experimental Research. Descriptive only focuses on the characteristics of the data or the population. While Correlational deals with determining of there are relationships between two variables, such as positive or negative correlation. Experimental research controls one variable and examines how it affects the other variable.
Other common examples of research methods in Psychology are Case study, Meta-analysis, Observational study, Quasi-experiment and Survey. The similarities among the first four examples are they try to understand the cause and effect relationships between variables. The difference is that, Case study is given a more detailed consideration of the topic over a certain period of time, while Meta –analysis, combines and summarizes data from several study to develop a single conclusion. On the other hand, Observational study is different from experiment where in the assignment of subjects is not controlled by the researcher and also which treatments each group will receive. Survey differs from the rest since it uses questionnaires or list of questions being asked by the researcher to subjects in order to collect information.
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