Main Page | See live article | Alphabetical index Quantitative psychological research is defined as psychological research which performs statistical estimation or statistical inference. This definition distinguishes it from so-called qualitative psychological research; however, many psychologists do not acknowledge any real difference between quantitative and qualitative research. The validity of the distinction is discussed in the article about qualitative psychological research. This article is a stub. You can help Wikipedia by fixing it. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.