To find empirical studies, look for peer-reviewed journal articles reporting original research.
Please refer to page 10 of the Publication Manual of the APA (2010) for a detailed discussion of those terms. We have print copies of the APA Manual in the library at the reference desk (call number BF76.7 .P83 2010). No completely electronic copies of the 6th edition are available.
Longitudinal studies track changes in a well-defined group of people (usually all the same age) over an extended period of time, coming back to the same subjects to gather data at different times. Read more about longitudinal studies in the Gale Encyclopedia of Psychology.
Cross-sectional studies collect data at one time from a varied group of participants of different ages. Read more about cross-sectional studies in the Gale Encyclopedia of Psychology .
References:
American Psychological Association. (2010). Publication manual of the American Psychological Association (6th ed.). Washington, DC: American
Psychological Association.
Cross-Sectional Study. (2001). In Strackland, B., Ed., The Gale Encyclopedia of Psychology. 2nd ed. Detroit: Gale, 2001. 163. Accessed from the Gale Virtual Reference Library at
http://go.galegroup.com/ps/i.do?id=GALE%7CCX3406000166&v=2.1&u=utoronto_main&it=r&p=GVRL&sw=w&asid=e08a353b33ba6d99f0bfc02142bab12e on 1 Feb. 2014.
Longitudinal Study. (2001). In Strackland, B., Ed., The Gale Encyclopedia of Psychology. 2nd ed. Detroit: Gale, 2001. 394. Accessed from the Gale Virtual Reference Library at
http://go.galegroup.com/ps/i.do?id=GALE%7CCX3406000396&v=2.1&u=utoronto_main&it=r&p=GVRL&sw=w&asid=81eca122b82102707cecf08432c17ba2 on 27 Jan. 2014.
A good starting point is the specialized psychology journal article database called PsycINFO. PsycINFO lets you search all the key research journals in psychology at the same time.
The search screen will look like this:
If you are using the Thesaurus, your search will look like this:
Once you have found a good starting term, or terms, it is time to set up the search limits. The PsycINFO tool called Limits will help you to refine your search to empirical studies conducted using the study design specified by Prof. Pichora-Fuller.
Now that you know you will be getting only the kinds of publications researchers use to inform one another officially about their research, limit your results to the methodologies required in your assignment.
Ulrich's Periodical Directory lets you see whether a journal in which you found your article is scholarly and peer-reviewed.
Search for the title of the journal in Ulrich's
If the journal is peer-reviewed, you will see a REFEREE'S T-shirt image beside the title:
With the new ALL search and ARTICLE search, it is easy to broaden your searches.
Other tools, like Article Finder, help you to find a specfific article for which you have the citation.