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: author="Heerkens, Jasper LT*" or (type exact bookEditor and editor="Heerkens, Jasper LT*") Add to list Miscellaneous Observer bias in animal behaviour research: can we believe what we score, if we score what we believe? Frank Tuyttens (UGent) , Sophie de Graaf, Jasper LT Heerkens, Leonie Jacobs (UGent) , Elena Nalon (UGent) , Sanne Ott, Lisanne Stadig (UGent) , Eva Van laer (UGent) and Bart Ampe (2014) ANIMAL BEHAVIOUR. 90. p.273-280