> Ali Moazzam wrote:
>
> Can any body let me know that what are Longitudinal studies. What are
> they, why are they done and how are they done.
Longitudinal studies are studies over a period of time. That means, you
do your research not only once, but twice or more times, and you do it
unchanged to compare the results over time. The rationale behind
longitudinal studies are that you are interested in time effects.
Hope that helps
Harald Klein
----------------------
Dr. Harald Klein
Social Science Consulting
Brückengasse 12
07407 Rudolstadt
Germany
Tel/Fax: +49 3672 488494
www.textquest.de
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