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Michael T Mendl
University of Bristol
WelfarePsychologyAnimal welfareSocial psychologyBiology
284Publications
45H-index
7,399Citations
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Publications 300
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#1Poppy T E Statham (UoB: University of Bristol)H-Index: 6
#2Sion Hannuna (Vision Institute)H-Index: 12
Last. Michael T Mendl (UoB: University of Bristol)H-Index: 45
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#2Peter Dayan (MPG: Max Planck Society)H-Index: 82
Last. Michael T MendlH-Index: 45
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#1Justyna K. Hinchcliffe (UoB: University of Bristol)H-Index: 2
#2Michael T Mendl (UoB: University of Bristol)H-Index: 45
Last. Emma S. J. Robinson (UoB: University of Bristol)H-Index: 21
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Abstract Recent clinical and pre-clinical research suggests that affective biases may play an important role in the development and perpetuation of mood disorders. Studies in animals have also revealed that similar neuropsychological processes can be measured in non-human species using behavioural assays designed to measure biases in learning and memory or decision-making. Given the proposed links between hormones and mood, we used the affective bias test to investigate the effects of different ...
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Individual behavioral differences may influence how animals cope with altered environments. Depending on their behavioral traits, individuals may thus vary in how their health is affected by environmental conditions. We investigated the relationship between individual behavior of free-living golden-headed lion tamarins (Leontopithecus chrysomelas) responding to a novel object (to assess exploration-avoidance), and their habitat use and health status (endoparasitism; clinical measures: biometric ...
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#1Michael T Mendl (UoB: University of Bristol)H-Index: 45
#2Elizabeth S. Paul (UoB: University of Bristol)H-Index: 24
Abstract The scientific study of animal affect (emotion) is an area of growing interest. Whilst research on mechanism and causation has predominated, the study of function is less advanced. This is not due to a lack of hypotheses; in both humans and animals, affective states are frequently proposed to play a pivotal role in coordinating adaptive responses and decisions. However, exactly how they might do this (what processes might implement this function) is often left rather vague. Here we prop...
1 CitationsSource
Abstract Validated measures of animal affect are crucial to research spanning numerous disciplines. Judgement bias, which assesses decision-making under ambiguity, is a promising measure of animal affect. One way of validating this measure is to administer drugs with affect-altering properties in humans to non-human animals and determine whether the predicted judgement biases are observed. We conducted a systematic review and meta-analysis using data from 20 published research articles that use ...
1 CitationsSource
#1Elizabeth S. Paul (UoB: University of Bristol)H-Index: 24
#2Shlomi Sher (Pomona College)H-Index: 6
Last. Michael T Mendl (UoB: University of Bristol)H-Index: 45
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Abstract The componential view of human emotion recognises that affective states comprise conscious, behavioural, physiological, neural and cognitive elements. Although many animals display bodily and behavioural changes consistent with the occurrence of affective states similar to those seen in humans, the question of whether and in which species these are accompanied by conscious experiences remains controversial. Finding scientifically valid methods for investigating markers for the subjectiv...
4 CitationsSource
#1Michael T MendlH-Index: 45
#2Elizabeth S. PaulH-Index: 24
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#1Sern Loong Timothy Tan (University of Melbourne)
#2Kathrine A. Handasyde (University of Melbourne)H-Index: 21
Last. Michael T Mendl (UoB: University of Bristol)H-Index: 45
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Theory and empirical findings predict that individuals in a negative affective state are more sensitive to unexpected reward loss and less sensitive to unexpected reward gain compared to individuals in a neutral or positive affective state. We explore the use of sensitivity to reward shifts measured during successive contrast tasks as an indicator of affect in zebrafish (Danio rerio). In line with the assumption that exposure to rewarding stimuli induces a relatively positive affective state com...
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#1Anna Trevarthen (UoB: University of Bristol)
#2Sarah Kappel (Plymouth University)H-Index: 2
Last. Carole Fureix (Plymouth University)
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Affect-driven cognitive biases can be used as an indicator of affective (emotional) state. Since humans in negative affective states demonstrate greater responses to negatively-valenced stimuli, we investigated putative affect-related bias in mice by monitoring their response to unexpected, task-irrelevant stimuli of different valence. Thirty-one C57BL/6J and 31 DBA/2J females were individually trained to return to their home-cage in a runway. Mice then underwent an affective manipulation acutel...
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