Happy hamsters? Enrichment induces positive judgement bias for mildly (but not truly) ambiguous cues to reward and punishment inMesocricetus auratus

Acute stress enhances sensitivity to a highly attractive food reward without affecting judgement bias in laying hens

(2015) Carlos E. Hernandez et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Cognitive bias, hand preference and welfare of common marmosets

(2015) Dianne J. Gordon et al.   BEHAVIOURAL BRAIN RESEARCH

Frontal brain deactivation during a non-verbal cognitive judgement bias test in sheep

(2015) Kathrin Guldimann et al.   BRAIN AND COGNITION

Oxytocin induces positive expectations about ambivalent stimuli (cognitive bias) in dogs

(2015) Anna Kis et al.   HORMONES AND BEHAVIOR

Effects of optimism on motivation in rats

(2015) Rafal Rygula et al.   Frontiers in Behavioral Neuroscience

The A to Z of statistics for testing cognitive judgement bias

(2014) Lorenz Gygax   ANIMAL BEHAVIOUR

Behaviour of horses in a judgment bias test associated with positive or negative reinforcement

(2014) Sabrina Briefer Freymond et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Generating positive affective states in sheep: The influence of food rewards and opioid administration

(2014) Else Verbeek et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

The effect of conspecific removal on the behaviour and physiology of pair-housed shelter dogs

(2014) Jessica K. Walker et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Does stocking density modify affective state in pigs as assessed by cognitive bias, behavioural and physiological parameters?

(2014) Annalisa Scollo et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Repeated exposure to positive events induces optimistic-like judgment and enhances fearfulness in chronically stressed sheep

(2014) Alexandra Destrez et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

The effects of cocaine and mazindol on the cognitive judgement bias of rats in the ambiguous-cue interpretation paradigm

(2014) Rafal Rygula et al.   BEHAVIOURAL BRAIN RESEARCH

Valence of physical stimuli, not housing conditions, affects behaviour and frontal cortical brain activity in sheep

(2014) Sabine Vögeli et al.   BEHAVIOURAL BRAIN RESEARCH

The effects of acute pharmacological stimulation of the 5-HT, NA and DA systems on the cognitive judgement bias of rats in the ambiguous-cue interpretation paradigm

(2014) Rafal Rygula et al.   EUROPEAN NEUROPSYCHOPHARMACOLOGY

Effect of multilevel laboratory rat caging system on the well-being of the singly-housed Sprague Dawley rat

(2014) R R Wheeler et al.   LABORATORY ANIMALS

Separation from the Dam Causes Negative Judgement Bias in Dairy Calves

(2014) Rolnei R. Daros et al.   PLoS One

Hope for the Best or Prepare for the Worst? Towards a Spatial Cognitive Bias Test for Mice

(2014) Vanessa Kloke et al.   PLoS One

Canine Sense and Sensibility: Tipping Points and Response Latency Variability as an Optimism Index in a Canine Judgement Bias Assessment

(2014) Melissa J. Starling et al.   PLoS One

Cognitive judgment bias in the psychostimulant-induced model of mania in rats

(2014) Rafal Rygula et al.   PSYCHOPHARMACOLOGY

Validation of a novel cognitive bias task based on difference in quantity of reinforcement for assessing environmental enrichment

(2013) Heidi A. Keen et al.   ANIMAL COGNITION

Disrupting motivational sequences in chicks: Are there affective consequences?

(2013) Birgitte Seehuus et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Rescued goats at a sanctuary display positive mood after former neglect

(2013) Elodie F. Briefer et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Chronic stress induces pessimistic-like judgment and learning deficits in sheep

(2013) Alexandra Destrez et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Responses of conventional pigs and Göttingen miniature pigs in an active choice judgement bias task

(2013) Eimear Murphy et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Cross sectional study comparing behavioural, cognitive and physiological indicators of welfare between short and long term kennelled domestic dogs

(2013) Mieke Titulaer et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Chronic psychosocial stress makes rats more ‘pessimistic’ in the ambiguous-cue interpretation paradigm

(2013) Justyna Papciak et al.   BEHAVIOURAL BRAIN RESEARCH

Long-term changes in cognitive bias and coping response as a result of chronic unpredictable stress during adolescence

(2013) Lauren E. Chaby et al.   Frontiers in Human Neuroscience

A design for studies on cognitive bias in the domestic pig

(2013) Sandra Düpjan et al.   Journal of Veterinary Behavior-Clinical Applications and Research

Trait Pessimism Predicts Vulnerability to Stress-Induced Anhedonia in Rats

(2013) Rafal Rygula et al.   NEUROPSYCHOPHARMACOLOGY

Are hungry sheep more pessimistic? The effects of food restriction on cognitive bias and the involvement of ghrelin in its regulation

(2013) Else Verbeek et al.   PHYSIOLOGY & BEHAVIOR

Pain and Pessimism: Dairy Calves Exhibit Negative Judgement Bias following Hot-Iron Disbudding

(2013) Heather W. Neave et al.   PLoS One

Brief owner absence does not induce negative judgement bias in pet dogs

(2012) Corsin A. Müller et al.   ANIMAL COGNITION

Stereotypic head twirls, but not pacing, are related to a ‘pessimistic’-like judgment bias among captive tufted capuchins (Cebus apella)

(2012) Ori Pomerantz et al.   ANIMAL COGNITION

Cognitive bias in a non-human primate: husbandry procedures influence cognitive indicators of psychological well-being in captive rhesus macaques

(2012) EJ Bethell et al.   ANIMAL WELFARE

Environmental enrichment induces optimistic cognitive biases in pigs

(2012) Catherine Douglas et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Cognitive bias and anticipatory behaviour of laying hens housed in basic and enriched pens

(2012) Anette Wichman et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Does reduction of fearfulness tend to reduce pessimistic-like judgment in lambs?

(2012) Alexandra Destrez et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

A test to identify judgement bias in mice

(2012) Hetty Boleij et al.   BEHAVIOURAL BRAIN RESEARCH

A glass full of optimism: Enrichment effects on cognitive bias in a rat model of depression

(2012) Sophie Helene Richter et al.   COGNITIVE AFFECTIVE & BEHAVIORAL NEUROSCIENCE

Laughing Rats Are Optimistic

(2012) Rafal Rygula et al.   PLoS One

The Effects of Juvenile Stress on Anxiety, Cognitive Bias and Decision Making in Adulthood: A Rat Model

(2012) Nichola M. Brydges et al.   PLoS One

Investigating the psychopharmacology of cognitive affective bias in rats using an affective tone discrimination task

(2012) Michael H. Anderson et al.   PSYCHOPHARMACOLOGY

Sheep exhibit a positive judgement bias and stress-induced hyperthermia following shearing

(2011) Maree E. Sanger et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Using judgement bias to measure positive affective state in dogs

(2011) Oliver Burman et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Agitated Honeybees Exhibit Pessimistic Cognitive Biases

(2011) Melissa Bateson et al.   CURRENT BIOLOGY

Pharmacological reversal of cognitive bias in the chick anxiety-depression model

(2011) Kristen A. Hymel et al.   NEUROPHARMACOLOGY

Measuring judgement bias and emotional reactivity in sheep following long-term exposure to unpredictable and aversive events

(2011) Rebecca E. Doyle et al.   PHYSIOLOGY & BEHAVIOR

Environmental enrichment induces optimistic cognitive bias in rats

(2010) Nichola M. Brydges et al.   ANIMAL BEHAVIOUR

Stereotyping starlings are more ‘pessimistic’

(2010) Ben O. Brilot et al.   ANIMAL COGNITION

The effect of repeated testing on judgement biases in sheep

(2010) Rebecca E. Doyle et al.   BEHAVIOURAL PROCESSES

Cognitive bias in the chick anxiety–depression model

(2010) Amy L. Salmeto et al.   BRAIN RESEARCH

Dogs showing separation-related behaviour exhibit a ‘pessimistic’ cognitive bias

(2010) Michael Mendl et al.   CURRENT BIOLOGY

An integrative and functional framework for the study of animal emotion and mood

(2010) M. Mendl et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Administration of serotonin inhibitor p-Chlorophenylalanine induces pessimistic-like judgement bias in sheep

(2010) Rebecca E. Doyle et al.   PSYCHONEUROENDOCRINOLOGY

Cognitive bias as an indicator of animal emotion and welfare: Emerging evidence and underlying mechanisms

(2009) Michael Mendl et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Release from restraint generates a positive judgement bias in sheep

(2009) Rebecca E. Doyle et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE

Ambiguous-Cue Interpretation is Biased Under Stress- and Depression-Like States in Rats

(2009) Thomas Enkel et al.   NEUROPSYCHOPHARMACOLOGY

Anxiety-induced cognitive bias in non-human animals

(2009) Oliver H.P. Burman et al.   PHYSIOLOGY & BEHAVIOR

Generalized linear mixed models: a practical guide for ecology and evolution

(2009) Benjamin M. Bolker et al.   TRENDS IN ECOLOGY & EVOLUTION

A spatial judgement task to determine background emotional state in laboratory rats, Rattus norvegicus

(2008) Oliver H.P. Burman et al.   ANIMAL BEHAVIOUR

Larger, enriched cages are associated with ‘optimistic’ response biases in captive European starlings (Sturnus vulgaris)

(2007) Stephanie M. Matheson et al.   APPLIED ANIMAL BEHAVIOUR SCIENCE