
Hi Ruru's,
score.items in package psych is very handy for scoring test items. It has the structure score.items(keys,items).
For instance: 
score.items(c(1,1,1),data.frame(a1=rep(1,5),a2=rep(1,5),a3=rep(1,5)))$scores
correctly gives 1 on each case.
But if key <> -1,0,1  the following happens
score.items(c(0.1,0.1,0.1),data.frame(a1=rep(1,5),a2=rep(1,5),a3=rep(1,5)))$scores
gives 10 on each case. It appears that the inverse of key is the relative weight of that item.
My questions: is this correct? Is this an undocumented feature? Can i trust on it?
Frans
 		 	   		  
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