ArticleScientific reports2018
Environmental complexity buffers against stress-induced negative judgement bias in female chickens.
Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
35 citing papers in PubMed, 69 citations in OpenAlex.
- High-carotenoid orange corn diet altered serotonin and dopamine activity in the brain while heat stress altered total antioxidant capacity in a sex dependent manner in Pekin ducks.Poultry science · 2025Article
- Toutouwai display positive judgement bias when tested in the wild.Animal cognition · 2025Article
- Insights from the judgement bias paradigm: social group and tank size do not affect mental state in female guppies.Journal of fish biology · 2025Article
- Making the most of life: environmental choice during rearing enhances the ability of laying hens to take opportunities.Frontiers in veterinary science · 2024Article
- Article
- Environmental change or choice during early rearing improves behavioural adaptability in laying hen chicks.Scientific reports · 2023Article
- Judgement bias may be explained by shifts in stimulus response curves.Royal Society open science · 2023Article
- The effect of repeated testing on judgement bias in domestic dogs (Canis familiaris).Animal cognition · 2023Article
- Use of qualitative behavioural assessment to investigate affective states of housed dairy cows under different environmental conditions.Frontiers in veterinary science · 2023Article
- Increased dietary 5-hydroxytryptophan reduces fearfulness in red junglefowl hens (Frontiers in physiology · 2023Article
- Enhancing their quality of life: environmental enrichment for poultry.Poultry science · 2023Article
- Pessimistic cognitive bias is associated with enhanced reproductive investment in female zebrafish.Biology letters · 2022Article
- Looking beyond the Shoal: Fish Welfare as an Individual Attribute.Animals : an open access journal from MDPI · 2022Article
- Changes in Stereotypies: Effects over Time and over Generations.Animals : an open access journal from MDPI · 2022Review
- Increasing Environmental Complexity by Providing Different Types of Litter and Perches during Early Rearing Boosts Coping Abilities in Domestic Fowl Chicks.Animals : an open access journal from MDPI · 2022Article
- Effects of Key Farm Management Practices on Pullets Welfare-A Review.Animals : an open access journal from MDPI · 2022Review
- How Inhibitory Control Relates to Positive and Negative Affective States in Red Junglefowl.Frontiers in veterinary science · 2022Article
- Foraging Behavior Shows Individual-Consistency Over Time, and Predicts Range Use in Slow-Growing Free-Range Male Broiler Chickens.Frontiers in veterinary science · 2022Article
- The Acute Pharmacological Manipulation of Dopamine Receptors Modulates Judgment Bias in Japanese Quail.Frontiers in physiology · 2022Article
- Environmental complexity positively impacts affective states of broiler chickens.Scientific reports · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cognitive processes are often biased by emotions. In humans, affective disorders are accompanied by pessimistic judgement, while optimistic judgement is linked to emotional stability. Similar to humans, animals tend to interpret ambiguous stimuli negatively after experiencing stressful events, although the long-lasting impact on judgement bias has rarely been investigated. We measure judgement bias in female chicks (Gallus gallus domesticus) after exposure to cold stress, and before and after exposure to additional unpredictable stressors. Additionally, we explore if brain monoamines can explain differences in judgement bias. Chicks exposed to cold stress did not differ in judgement bias compared to controls, but showed sensitivity to additional stressors by having higher motivation for social reinstatement. Environmental complexity reduced stress-induced negative judgement bias, by maintaining an optimistic bias in individuals housed in complex conditions even after stress exposure. Moreover, judgement bias was related to dopamine turnover rate in mesencephalon, with higher activity in individuals that had a more optimistic response. These results demonstrate that environmental complexity can buffer against negative effects of additive stress and that dopamine relates to judgement bias in chicks. These results reveal that both internal and external factors can mediate emotionally biased judgement in animals, thus showing similarities to findings in humans.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.