Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: affiliation exact EB02 cql: author exact 801001477790 Add to list Miscellaneous The value effect: now you see it, now you don't Jan Annaert, John Crombez (UGent) , Bart Spinel and Frederiek Van Holle (2001) Mimeo 2001.