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  • Title: Behavior test for seven-week old puppies (Canis familiaris): Inter-rater reliability and factors associated with test performance.
    Author: Alberghina D, Giunta F, Gioè M, Panzera M.
    Journal: PLoS One; 2020; 15(7):e0236271. PubMed ID: 32726318.
    Abstract:
    Behavioral development in domestic dogs has been investigated for predicting suitability for service dog work or for matching with the "right" families as well as for identifying predispositions to behavioral problems. Findings from the scientific literature seem to confirm that conducting behavioral tests at 7 weeks of age is too early to reliably predict the temperament and personality of a dog. However, this period for domestic dogs is sensitive for early life learning and conditions during this time could have important consequences in adulthood. The aims of this study were to evaluate inter-rater reliability of a simple standardized test and to investigate which factors influence the behavioral reaction of puppies. 105 seven-week old puppies were exposed to five subtests: social attraction, following, retrieving, sudden appearance, noise. During each task, the behaviour of each pup was scored on a 3-5 point scale that reflected the suitability of the pup's reaction to the task. Scores were evaluated for a single subtest and for two aggregate indicators (i.e. response to a person: social attraction subtest and following subtest and response to object and noise: retrieving subtest, sudden appearance subtest and noise subtest). Three assessors independently scored the dogs' reactions for each task. Inter-rater reliability of the three assessors were analyzed with Fleiss' Kappa and Kendall's coefficient, which showed a high inter-rater reliability in 4 of 5 tasks. The ordered logistic regression was carried out to obtain a proportional odds model that was used to model the relationship between sex, litter size, stimulating environment, parity of mother, adequate maternal behavior and high scores. Litter size and maternal parity were associated with test performance in response to a person. The variance of effect of litter was high in response to object and noise. Taken together, our results suggest that using this scoring system there is sufficient inter-rater reliability in the test and litter size and mother experience influences task performances related to dog-human interaction.
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