Michael Mendl

TL;DR: In this article, the authors examined the relationship between reward and loss experience, affect, and decision-making in humans using a novel judgement bias task analysed with a novel computational model and found that individuals reported more positive affective valence during periods of the task when prediction errors and offered decision outcomes were more positive.

TL;DR: Zebrafish prefer enriched over barren environments, suggesting that the enriched environment is associated with positive affective states, and the behaviour of zebrafish in this task was under habitual control, perhaps due to over-training.

TL;DR: In this paper, the authors assessed the value of sleep behavior as a novel measure of stress in group-housed animals and found that low frequencies of sleep behaviour and low sleep duration correlate with elevated physiological and physical stress, raising the possibility that sleep behaviour may provide an under-utilised, but potentially important, non-invasive indicator of stress and welfare for animals in groups.

TL;DR: Computer vision image analysis offers a practical approach to measuring pig DC responses, and potentially pig affect and welfare, under field conditions, and was strongly positively correlated with these and all other estimates of DC responses.