ArticleLearning & behavior2020
No evidence that footedness in pheasants influences cognitive performance in tasks assessing colour discrimination and spatial ability.
Article in Learning & behavior, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 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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Who cites it
6 citing papers in PubMed.
- The repeatability of behavioural laterality during nest building in zebra finches.Animal cognition · 2024Article
- Effect of visual lateralization on the spatial position of individuals within a school of oval squid (Sepioteuthis lessoniana).Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2024Article
- Behavioral laterality is correlated with problem-solving performance in a songbird.Animal cognition · 2023Article
- Repeated testing does not confound cognitive performance in the Western Australian magpie (Cracticus tibicen dorsalis).Animal cognition · 2023Article
- Dog cognitive development: a longitudinal study across the first 2 years of life.Animal cognition · 2021Article
- Learning is negatively associated with strength of left/right paw preference in wild grey squirrels (Sciurus carolinensis).Learning & behavior · 2020Article
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.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The differential specialization of each side of the brain facilitates the parallel processing of information and has been documented in a wide range of animals. Animals that are more lateralized as indicated by consistent preferential limb use are commonly reported to exhibit superior cognitive ability as well as other behavioural advantages. We assayed the lateralization of 135 young pheasants (Phasianus colchicus), indicated by their footedness in a spontaneous stepping task, and related this measure to individual performance in either 3 assays of visual or spatial learning and memory. We found no evidence that pronounced footedness enhances cognitive ability in any of the tasks. We also found no evidence that an intermediate footedness relates to better cognitive performance. This lack of relationship is surprising because previous work revealed that pheasants have a slight population bias towards right footedness, and when released into the wild, individuals with higher degrees of footedness were more likely to die. One explanation for why extreme lateralization is constrained was that it led to poorer cognitive performance, or that optimal cognitive performance was associated with some intermediate level of lateralization. This stabilizing selection could explain the pattern of moderate lateralization that is seen in most non-human species that have been studied. However, we found no evidence in this study to support this explanation.
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