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- Captive chimpanzees (2)
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Articles 1 - 9 of 9
Full-Text Articles in Psychology
Examining Environmental Use By Captive Lemur Catta And Varecia Rubra, Rhiannon Belcher
Examining Environmental Use By Captive Lemur Catta And Varecia Rubra, Rhiannon Belcher
All Master's Theses
There are over 100 named species of lemurs, of which 94% are considered threatened with extinction by the International Union for the Conservation of Nature (IUCN). They live in increasingly fragmented forests. To understand how best to protect them in their natural habitats, we can observe how they manipulate the environment and how they use objects, both natural and humanmade, around them. Understanding their behavior is a critical component of conservation, and observing behavior in a captive setting allows us to study lemur-environment relationships without disrupting what little habitat is left in Madagascar. In this study I investigated whether the …
Effect Of Group Size On The Activity Budget Of Two Captive Chimpanzees (Pan Troglodytes), Kaeley Sullins
Effect Of Group Size On The Activity Budget Of Two Captive Chimpanzees (Pan Troglodytes), Kaeley Sullins
All Master's Theses
Captive facilities housing chimpanzees are required to provide adequate care and provisions such as dietary, social, and environmental enrichment to promote the psychological well-being of the apes in their care. Chimpanzees are social creatures and changes in groups as well as relocation to a facility with new social partners, can impact each individual chimpanzee’s welfare. By tracking each chimpanzee’s activity budgets, managers can assess welfare and make improvements or adjustments if necessary. I looked at the activity budgets of two captive chimpanzees after the death of a group member and the two chimpanzees’ subsequent relocation to a novel, more socially …
Sign Modulation By Chimpanzees To Produce Interrogatives, Kailie Dombrausky
Sign Modulation By Chimpanzees To Produce Interrogatives, Kailie Dombrausky
All Master's Theses
Native signers of American Sign Language produce interrogatives by holding signs for an extended duration while employing the questioning look. The questioning look is defined as raised eyebrows, a tilted head, and direct eye contact maintained for the duration of the utterance. Chimpanzees who communicate using signs have demonstrated modulation of signs including held sign, raised brow, and eye gaze. The present study used archived video data to compare the duration of signs when the chimpanzees did or did not employ the questioning look. In both single and multi-sign utterances, the chimpanzees held their signs for a mean of 0.6 …
Re-Evaluating Captive Chimpanzee “Dominance”: Dominance Hierarchy And Chimpanzee-Caregiver Relationships At Chimpanzee Sanctuary Northwest, Jake Funkhouser
Re-Evaluating Captive Chimpanzee “Dominance”: Dominance Hierarchy And Chimpanzee-Caregiver Relationships At Chimpanzee Sanctuary Northwest, Jake Funkhouser
All Master's Theses
This thesis is composed of two journal-ready articles and an accompanying appendix with additional data and interpretation. Overall, this thesis describes and statistically analyzes dominance relationships in two nonhuman primate groups with novel methods, possible correlations between dominance and testosterone, and uncovers the prominent connection of caregivers to captive chimpanzee social networks. Chapter I addresses current and past variability in behavioral measures and statistical methods to derive dominance rankings. I propose a novel approach to using existing statistical techniques to analyze dominance ranks, context-dependent dominant structures (agonistic competitions, lack of agonism, privileged role, priority access to resources), the reliability of …
Response Of Three Species Of Monkeys To Caregiver Use Of Species-Typical Behavior, Lillian Anna Stolar
Response Of Three Species Of Monkeys To Caregiver Use Of Species-Typical Behavior, Lillian Anna Stolar
All Master's Theses
Caregivers are a primary part of captive monkey environments. When addressing psychological well-being of captive nonhuman primates, social environment should be considered. Chimpanzees, gorillas, New World monkeys, and Old World monkeys responded positively to interactions with caregivers. Some species showed increased affiliative behaviors and decreased abnormal or self-directed behaviors after interactions. These studies showed that caregivers can affect the behavior of nonhuman primates. Caregivers are underutilized as a source of social interaction for captive nonhuman primates. Utilizing species-typical behaviors during interactions, caregivers and nonhuman primates can communicate and interact in different ways that may be beneficial to both caregiver and …
Play In Immature Tibetan Macaques (Macaca Thibetana): Location, Use Of Play Signals, And Play Bout Termination At Mt. Huangshan, China, Kaitlin R. Wright
Play In Immature Tibetan Macaques (Macaca Thibetana): Location, Use Of Play Signals, And Play Bout Termination At Mt. Huangshan, China, Kaitlin R. Wright
All Master's Theses
In this study, I examined the relationship between play behaviors, play location, the frequency of selected play signals, and play bout termination in Tibetan macaques (Macaca thibetana) during immature social play. I gathered video data at the Valley of the Wild Monkeys, Mt. Huangshan, China, and focused on 21 juvenile and infant macaques (zero to five years of age). I used an all occurrence sampling method to score play behaviors and play signals with an ethogram. I hypothesized that play groups would use play signals in functionally appropriate ways based on the location of the play bout, the …
A Comparison Of Chimpanzee (Pan Troglodytes) Responses To Caregiver Use Of Positive Reinforcement Training (Prt) And Species-Specific Behaviors (Ssb), Whitney D. Emge
A Comparison Of Chimpanzee (Pan Troglodytes) Responses To Caregiver Use Of Positive Reinforcement Training (Prt) And Species-Specific Behaviors (Ssb), Whitney D. Emge
All Master's Theses
The present study compared the effects of positive reinforcement training (PRT) and unstructured interactions (UI) on chimpanzee (Pan troglodytes) behavior. In the PRT condition, a caregiver interacted with a chimpanzee to condition behaviors for 10 min. In the UI condition, a caregiver interacted without PRT for 10 min. Participants were five chimpanzees in a sanctuary setting. Chimpanzees were also videotaped for 10 min after trials (PTP) and for 10 min in a matched control (MC) period on a different day. From these videotapes experimenters coded chimpanzee behaviors and calculated durations in behavioral contexts. Chimpanzees spent a significantly higher …
Javan Gibbon (Hylobates Moloch) Non-Vocal Social Communication And Gesture Use With Conspecifics, Melanie Bell
Javan Gibbon (Hylobates Moloch) Non-Vocal Social Communication And Gesture Use With Conspecifics, Melanie Bell
All Master's Theses
I explored gestures used by captive Javan gibbons (Hylobates moloch) at the Gibbon Conservation Center (Santa Clarita, CA). I hypothesized that a sender gibbon’s gesture modality would vary with the recipient gibbon’s attentional state and the sender would be equally likely to use all modalities (tactile, visual, actions, and facial expressions) when the recipient was attending (facing the sender), but would use more tactile gestures and actions when the recipient was non-attending (oriented away from the sender). I collected data from 10 individuals using all-occurrences sampling and an ethogram to score behaviors from video recordings. In 1,143 interactions, …
Sustainability Policy’S Inherent Dilemmas – Exemplified Via Critical Examination Of The Las Vegas Metropolitan Sustainability Campaign, Kathryn A. Zimmerman
Sustainability Policy’S Inherent Dilemmas – Exemplified Via Critical Examination Of The Las Vegas Metropolitan Sustainability Campaign, Kathryn A. Zimmerman
All Master's Theses
In response to a dual problem of critical water scarcity and rapid population growth, leaders of metropolitan Las Vegas implemented a region-wide, internationally marketed sustainability campaign. Preliminary studies found that, while sustainability policy attains its rhetorical goals, solutions initiated not only perpetuate but also purposefully expand the original dual problem to justify continuous water resource acquisitions. To examine this sustainability conundrum constructed by leadership—problem-perpetuation rather than problem-resolution—a critical examination in resource management asked two basic questions: what is being sustained and by what means? Via this inquiry, specific processes by which leaders perpetuate problems can be identified; and, so-informed, new …