<P> Qualitative psychological research is where the research findings are not arrived at by statistical or other quantitative procedures . Quantitative psychological research is where the research findings result from mathematical modeling and statistical estimation or statistical inference . Since qualitative information can be handled as such statistically, the distinction relates to method, rather than the topic studied . </P> <P> There are three main types of psychological research: </P> <Ul> <Li> Correlational research </Li> <Li> Descriptive research </Li> <Li> Experimental research </Li> </Ul> <P> The following are common research designs and data collection methods: </P>

Biological psychologists obtain their data from which three kinds of research
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