Class Results for 2011 (based on 19 people):

  Mean Reaction Times in milliseconds (and error rates)...


                  REAL WORDS                       RANDOM LETTERS
List Size       Target      Distractor           Target        Distractor
2                648           702                767             754
3                789           650                759             719
4                804           802                903             763
5                897           831                929             725


2                9.5%          6.3%               2.1%            7.4%
3                7.4%          5.3%               8.4%            5.3% 
4               11.6%          7.4%               3.2%            5.3%
5                8.4%          6.3%               7.4%           25.3%
 

                                             
Note:  The data for six people were not included due to 
excessively high error rates (over 10%).

Also, I counted long RTs (those 4 standard deviations above the
overall mean) as errors.

You might want to graph these for yourself to get a feel for what 
was going on.  

In your reports, consider why we used letters and words.  What might
have happened based on your readings (think about some of the stuff we
looked at in Attention and Short-Term Memory)?  Were there any results
that seem different from the ones we saw in class and in the text?

For those of you who had 315, I did an analysis of variance of these
data.  In terms of main effects, List Size and Word vs. Letter were
significant, but whether something was a target or a distractor was
not.

All interactions were signiificant, as well.

Finally, do the error rates fit with the reaction times?

Labs due Tuesday.