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  PSY340: Statistics for the Social Sciences

Lab 25:

 

Part I: It has been demonstrated that when participants must memorize a list of words serially (in the order of presentation), words at the beginning and end of the list are remembered better than words in the middle. This has been called the serial-position effect. You wonder whether this holds true across different persentation modalities (reading lists versus hearing lists). So you give a group of four people two lists of words, one read to them, the other they read to themselves. Then you look at the number of words recalled from the first part of the list, the middle part of the list, and the final part of the list. The data are as follows:

Read to
Read by
First PartMiddle PartFinal PartFirst PartMiddle PartFinal Part
1501 3 0
372 4 4 1
561 6 6 3
321 2 50

Is there a serial position effect for both methods? Are there main effects? Organize your results in an ANOVA table, also report descriptive statistics (means and std devs) for cells and marginals. Assume an alpha level of 0.05.

Part II: using the majors.sav datafile examine whether there is an interaction between type of SAT test performance (math or verbal) and gender. Organize your results in an ANOVA table.

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