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Thank you everyone for your input and helpful websites. It is true, seems that I will have to find a stats experts! Regards Britta On Thu, Jun 17, 2010 at 3:48 PM, Cesar Delgado <[log in to unmask]> wrote: > Jeff Dodick's comment is very true - you can't always just use a t-test. The > nature of the variables play a role in determining what test is appropriate. > This site can provide some insight: > http://www.ats.ucla.edu/stat/spss/whatstat/ > but it would be best to consult a stats expert. > > Cesar Delgado * Assistant Professor * Science and Mathematics Education * 1 > University Station D5700 * University of Texas at Austin * Austin, TX 78712 > * Phone: (512) 232 9682 > > > > > > > > > > > On Jun 17, 2010, at 4:09 AM, Britta Bookhagen wrote: > >> Greetings everyone >> >> I was wondering whether someone could recommend one or two educational >> papers, that use pre-and posts tests to assess students achievements >> from a program taught (I actually have two post-tests, a long term and >> a short term). >> >> I am about to write things up for a scientific paper and I am not sure >> whether I should use repeated measurements or two series of t-tests to >> analyze the quantitative questions. Does anyone have experience with >> this topic? There are just too many papers out there and I am not sure >> about their reliability. >> >> I would very much appreciate any suggestions. >> >> Thank you very much >> >> Britta >