Dogs are more pessimistic if their owners use two or more aversive training methods

Rachel A Casey*, Maria C P Naj-Oleari, Sarah Campbell, Michael T Mendl, Emily-Jayne Blackwell

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)
302 Downloads (Pure)


Domestic dogs are trained using a range of different methods, broadly categorised as reward based (positive reinforcement/negative punishment) and aversive based (positive punishment/negative reinforcement). Previous research has suggested associations between use of positive punishment-based techniques and undesired behaviours, but there is little research investigating the relative welfare consequences of these different approaches. This study used a judgement bias task to compare the underlying mood state of dogs whose owners reported using two or more positive punishment/negative reinforcement based techniques, with those trained using only positive reinforcement/negative punishment in a matched pair study design. Dogs were trained to discriminate between rewarded and unrewarded locations equidistant from a start box, and mean latencies recorded. Their subsequent latency to intermediate 'ambiguous' locations was recorded as an indication of whether these were perceived as likely to contain food or not. Dogs trained using aversive methods were slower to all ambiguous locations. This difference was significant for latency to the middle (Wilcoxon Z = - 2.380, P = 0.017), and near positive (Wilcoxon Z = - 2.447, P = 0.014) locations, suggesting that dogs trained using coercive methods may have a more negative mood state, and hence that there are welfare implications of training dogs using such methods.

Original languageEnglish
Article number19023
Pages (from-to)19023
Number of pages8
JournalScientific Reports
Issue number1
Early online date24 Sept 2021
Publication statusPublished - 24 Sept 2021

Bibliographical note

Funding Information:
SC was funded with a Wellcome Trust vacation scholarship, MN-O was funded by a grant from the Anthrozool-ogy Institute. We thank the Wellcome Trust and Anthrozoology Institute for assistance with research costs. EB was funded by Dogs Trust at the time of the study, RC was at the University of Bristol at the time of the study but is now employed at Dogs Trust. We thank Dogs Trust for their contribution to authors’ time on this project. MM is employed by the University of Bristol. No authors have a conflict of interest regarding authorship of this paper.

Publisher Copyright:
© 2021, The Author(s).


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