Zobrazeno 11 - 20
of 190
pro vyhledávání: '"Jennifer Vonk"'
Autor:
Jennifer Vonk
Publikováno v:
Animals, Vol 13, Iss 9, p 1554 (2023)
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
Externí odkaz:
https://doaj.org/article/6a5255b2f0ee4be3b4c9bfcebf3ef3b1
Publikováno v:
Comparative Cognition & Behavior Reviews, Vol 16, Pp 1-35 (2021)
Externí odkaz:
https://doaj.org/article/9c1e0dff86654bfdaeb058e9d740541a
Autor:
Jennifer Vonk
Publikováno v:
Animal Behavior and Cognition, Vol 7, Iss 3, Pp 264-269 (2020)
Povinelli (2000) published a series of careful studies probing chimpanzees’ understanding of physical causality in the book, “Folk Physics for Apes: The Chimpanzee’s theory of how the world works.” The studies and Povinelli’s conclusions re
Externí odkaz:
https://doaj.org/article/ee062bcd5d184037ab30e067275016e6
Autor:
Jennifer Vonk
Publikováno v:
Animal Behavior and Cognition, Vol 7, Iss 2, Pp 82-86 (2020)
In 1980, two groundbreaking articles were published by the team of Seyfarth, Cheney and Marler. In these papers, the question of whether vervet monkeys produced and encoded semantic information in their alarm calls set the stage for experimental expl
Externí odkaz:
https://doaj.org/article/b05682f8005f4e5c8ef01bc3f83c0b6f
Publikováno v:
Animals, Vol 12, Iss 9, p 1188 (2022)
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
Externí odkaz:
https://doaj.org/article/6a1c3a80b1a24d0281302f964c388f9e
A Food for All Seasons: Stability of Food Preferences in Gorillas across Testing Methods and Seasons
Publikováno v:
Animals, Vol 12, Iss 6, p 685 (2022)
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
Externí odkaz:
https://doaj.org/article/194c7a276d504597af7f0689c23ce3c0
Autor:
Molly C. McGuire, Jennifer Vonk
Publikováno v:
Animal Behavior and Cognition, Vol 5, Iss 1, Pp 103-117 (2018)
In order to assess mood state in three male western lowland gorillas housed in a bachelor group, we developed a novel version of a cognitive bias task. The background color of a touchscreen presented a conditional ‘if, then…” rule relating to o
Externí odkaz:
https://doaj.org/article/f9b1c85d5dfc42e7a779201b81cced61
Autor:
Jennifer Vonk, Stephanie E. Jett
Publikováno v:
Animal Behavior and Cognition, Vol 5, Iss 1, Pp 68-78 (2018)
We presented two American black bears (Ursus americanus) with a serial list learning memory task, and one of the bears with a matching-to-sample task. After extended training, both bears demonstrated some success with the memory task but failed to ge
Externí odkaz:
https://doaj.org/article/8b7c7b91b7634365891b9c1177549976
Publikováno v:
Animal Behavior and Cognition, Vol 4, Iss 1, Pp 91-104 (2017)
In nonhumans, ‘optimism’ is often defined as responding to an ambiguous item in the same manner as to items previously associated with reward (or lack of punishment), and “pessimism” is defined as responding to an ambiguous item in the same m
Externí odkaz:
https://doaj.org/article/d1febc52ded54b7788b2550b8a275a1e
Autor:
Jennifer Vonk
Publikováno v:
Animal Behavior and Cognition, Vol 3, Iss 3, Pp 120-130 (2016)
However, for the next few pages, we wish to pay special tribute to Stan as a mentor, as this role was perhaps the one that was most pivotal in defining who he was as a scientist, colleague, and friend. We take comfort in the fact that Stan’s memory
Externí odkaz:
https://doaj.org/article/39e03c0ce87248238bb864f8e1c51c13