Abstract
References
1.
Campbell
A.
Some determinants of the difficulty of non-verbal classification items . Educ. psychol. Measmt , 1961 , 21 , 899 –913 .
You are on the new improved site. You can view the old site in view-only mode here until June 27, 2026
Filter Results
Select search scope: search across all journals or within the current journal
Search this journal
Enter search terms…
/