We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleAnimal behaviour: cognitive bias and affective state.AuthorsHarding, Emma J; Paul, Elizabeth S; Mendl, MichaelPublicationNature, 2004, Vol 427, Issue 6972, p312ISSN1476-4687Publication typeJournal ArticleDOI10.1038/427312a