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pro vyhledávání: '"Jennifer Vonk"'
Autor:
Jennifer Vonk
Publikováno v:
Animals. 13:1554
A preference scale for use by nonhuman animals would allow them to communicate their degree of liking for individual items rather than just relative preferences between pairs of items. It would also allow animals to report liking for images of object
Publikováno v:
Animals : an open access journal from MDPI. 12(9)
We adapted the emotional Stroop task developed for primates to test whether gorillas would show response slowing for images of ‘negative’ compared to images of ‘positive’ items placed within previously reinforced borders. Three zoo-housed mal
A Food for All Seasons: Stability of Food Preferences in Gorillas across Testing Methods and Seasons
Publikováno v:
Animals; Volume 12; Issue 6; Pages: 685
Decisions about which foods to use during training and enrichment for captive animals may be based on invalid assumptions about individuals’ preferences. It is important to assess the stability of food preferences given that one-time preferences ar
Publikováno v:
Comparative Cognition & Behavior Reviews. 16:1-35
Publikováno v:
Zoo Biology. 40:89-97
Judgment bias tasks can reveal changes in affect in animals as a function of environmental manipulations such as provision of enrichment. We assessed affect in an American black bear across seasonal changes in availability of a mulberry bush. We used
Autor:
Jennifer Vonk
Publikováno v:
American Journal of Primatology. 84
Rating scales, such as Likert scales, are incredibly flexible and intuitive tools for measuring individuals' rating of agreement with or relative preference for many types of stimuli. For humans, this typically involves ratings of agreement between e
Autor:
Jessica Ann Leete, Jennifer Vonk
Publikováno v:
Behavioral Ecology and Sociobiology. 76
Publikováno v:
Primates. 61:237-247
Studies of prosocial behavior in nonhumans have focused on group-living social animals. Despite being highly social and closely related to humans, chimpanzees have rarely exhibited prosocial preferences in experimental tasks. Fewer studies have provi
Autor:
Joy L, Vincent, Jennifer, Vonk
Publikováno v:
Behavioural Processes. 202:104751
Many species of armadillo demonstrate impressive navigation abilities and may compensate for poor eyesight with a strong sense of smell. We examined which modality four three-banded armadillos and one hairy armadillo prioritized when two cues (olfact
Publikováno v:
Zoo Biology. 37:23-34
We investigated how forage material affects indicators of welfare in three male Western lowland gorillas (Gorilla gorilla gorilla) at the Detroit Zoo. In addition to their maintenance diet and enrichment foods, the gorillas generally received forage