> > My name is Keera Fishman, and I am a PhD candidate in Clinical > Neuropsychology at the University of Ottawa. I downloaded PEBL in > order to use the reading span task for an experiment with > undergraduate students. Currently, I am examining the Reading Span > Test data, and I am experiencing some difficulties interpreting the > output. > > > Initially I thought that numcorrdist was the # of correctly recalled > letters in the output, but this does not appear to be correct. For > example, in the data file attached, Trial 36 stimulus was: QBUZYP and > the participant responded QBUZYD (num corr dist should be 5) (out of > 6 letters correct). However, the numcorrdist says 6 (out of 6 - > totalnumdist).
numcordist indicates the 'distractor' task correct for that trial--this is the number of sentences correctly verified on that memory trial. So, if you look at the appropriate rows of rspan-distraction-3002.csv: subnum,trial,X,X,X,order,statement,truth,type,correct,readingtime,respt ime 3002,36,-1,0,0,1,1,"Mary unlocks the door with her key.",1,D,1,1650,596 3002,36,-1,0,0,2,2,"The fireman put out the blue.",0,D,1,1317,556 3002,36,-1,0,0,3,3,"Worms live under the ground.",1,D,1,836,562 3002,36,-1,0,0,4,4,"Seven days makes a week.",1,D,1,1173,603 3002,36,-1,0,0,5,5,"The trash goes in the trash nose.",0,D,1,1085,685 3002,36,-1,0,0,6,6,"Oranges live in water.",0,D,1,992,546 If you look at this, you can see that all 6 sentences were correctly verified (the third column after the statement). Only the memcorr column (right after the response) tells you whether the memory trial was correct. It would be possible to create a partial correct score in excel or R or python, or even PEBL, but currently no partial-scoring is recorded. If you have not yet collected your data, I can try to tell you how to add this so it gets recorded for each trial, but unfortunately the reading span test in PEBL currently does not record this. Shane > I'm looking for the absolute storage score, which is the sum of all > trials in which all items were re-called in the correct serial > order (i.e., memcorr variable), avg response time (i.e., Avg of time > variable) and the partial storage score, which is the sum of items > recalled in the correct serial position, regardless of whether the > entire trial was recalled correctly (I thought this would be > numcorrdist divided by totnumdist but these numbers are incorrect). > > > I would really appreciate any advice moving forward for how to obtain > an accurate partial storage score. As this is important dissertation > data that I have to analyze, I would really appreciate any assistance > :) > > > I've attached two excel files here (output for 1 ReadingSpan test). > > > Sincerely, > > > Keera Fishman > Ph.D. Student, Clinical Psychology / Doctorante, psychologie clinique > Cognition and Anxiety Studies Laboratory > School of Psychology / École de psychologie > University of Ottawa / Université d'Ottawa > 3088 Vanier Hall, 136 Jean Jacques Lussier > Ottawa, ON, K1N 6N5 > > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Pebl-list mailing list Pebl-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pebl-list
