David A Leavens
Datos Biográficos
| ID | 180474 |
|---|---|
| NOMBRE | David A Leavens |
| NOMBRES | David A |
| APELLIDO | Leavens |
| FIRMA | LEAVENS D A |
| AFILIACIONES | University of Sussex |
| ORCID | 0000-0001-6538-4891 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 12 |
| TOTAL DE CITAS | 24 |
| TOTAL COMO AUTOR | 11 |
| TOTAL COMO EDITOR | 1 |
| PRIMER AÑO DE PUBLICACIÓN | 1998 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 2 |
Pointing
Pointing is a fundamental gesture that connects individuals with their social and physical worlds. Whether communicating information about the external environment or serving to clarify to whom or what someone is referring, pointing may appear to be a uniquely human and universal action. However, it develops in varied social and cultural contexts, and even some nonhuman species point and can understand pointing cues. While there has been substant…
Comparing effects of sad melody versus sad lyrics on mood
While researchers have consistently found that music can evoke discrete emotions in people cross-culturally, there is little consensus regarding the mechanisms underpinning this effect. The present study aimed to gain further insight into how music influences emotions, investigating whether the lyrics or the melody of a sad piece of non-classical music had a greater influence on mood. The researchers presented a sample of 251 participants with is…
What animals can tell us about attentional prerequisites of language acquisition
Theories of human language acquisition frequently posit human-unique attentional specializations to jumpstart language acquisition. There is a broad consensus that the developmental processes supporting language acquisition in our species rely on human-unique cognitive adaptions pertaining to the deployment and understanding of attention. However, close attention to the empirical evidence held to support these hypothetical psychological processes…
Communication and Developmental Milestones
Primate Gesture
The Importance of Development for Comparative Primatology
It is a truism to say that primates develop, but it is also important to acknowledge that development occurs across many domains, including motor behavior, socioemotional behavior, communication, and cognition. In this review, we focus on those aspects of development that impact social cognition outcomes in infancy. Triadic engagements, such as those of joint attention, cooperation, and intentional communication, develop in the first year of life…
Self-Awareness in Human and Chimpanzee Infants
The objective study of self-recognition, with a mirror and a mark applied to the face, was conducted independently by Gallup (1970) for use with chimpanzees and monkeys, and by Amsterdam (1972) for use with infant humans. Comparative psychologists have followed the model (and assumptions) set by Gallup, whereas developmental psychologists have followed a different model (e.g., Lewis & Brooks-Gunn, 1979). This article explores the assumptions in t…
Lateralized scratching in chimpanzees (Pan troglodytes)
This study evaluated laterality in scratching by chimpanzees (n = 89) during socially arousing circumstances. Hand use and the side of the body scratched was recorded during a baseline and experimental condition. In the experimental condition, chimpanzees were shown a video of other conspecifics sharing, fighting over, and consuming a watermelon. Self-touches were categorized as either rubs or scratches. The chimpanzees showed a significant right…
Multimodal concomitants of manual gesture by chimpanzees (Pan troglodytes)
It is well-established that chimpanzees vocalize more in the presence of relatively large amounts of food. The present study administered four trials in random order to each of 20 chimpanzees: (1) small piece of fruit, placed near to cage (~30 cm.), (2) large piece of fruit, placed near to cage, (3) small piece of fruit, placed far from cage (~130 cm.), and (4) large piece of fruit, placed far from cage. On arrival of an experimenter, the chimpan…
Multimodal concomitants of manual gesture by chimpanzees (Pan troglodytes)
It is well-established that chimpanzees vocalize more in the presence of relatively large amounts of food. The present study administered four trials in random order to each of 20 chimpanzees: (1) small piece of fruit, placed near to cage (~30 cm.), (2) large piece of fruit, placed near to cage, (3) small piece of fruit, placed far from cage (~130 cm.), and (4) large piece of fruit, placed far from cage. On arrival of an experimenter, the chimpan…
Effects of cognitive challenge on self‐directed behaviors by chimpanzees ( Pan troglodytes )
In primates, including humans, scratching and other self‐directed behaviors (SDBs) have recently been reported to be differentially displayed as a function of social interactions, anxiety‐related drugs, and response outcomes during learning tasks. Yet few studies have focused on the factors influencing SDBs in our closest living relatives, the chimpanzees ( Pan troglodytes ). Furthermore, no previous experimental study has examined handedness of …
Intentional communication by chimpanzees
This study describes the use of referential gestures with concomitant gaze orienting behavior to both distal food objects and communicative interactants by 115 chimpanzees, ranging from 3 to 56 years of age. Gaze alternation between a banana and an experimenter was significantly associated with vocal and gestural communication. Pointing was the most common gesture elicited; 47 subjects pointed with the whole hand, whereas 6 subjects pointed with …
Intentional communication by chimpanzees
This study describes the use of referential gestures with concomitant gaze orienting behavior to both distal food objects and communicative interactants by 115 chimpanzees, ranging from 3 to 56 years of age. Gaze alternation between a banana and an experimenter was significantly associated with vocal and gestural communication. Pointing was the most common gesture elicited; 47 subjects pointed with the whole hand, whereas 6 subjects pointed with …
The Importance of Development for Comparative Primatology
It is a truism to say that primates develop, but it is also important to acknowledge that development occurs across many domains, including motor behavior, socioemotional behavior, communication, and cognition. In this review, we focus on those aspects of development that impact social cognition outcomes in infancy. Triadic engagements, such as those of joint attention, cooperation, and intentional communication, develop in the first year of life…
Intentional communication by chimpanzees
This study describes the use of referential gestures with concomitant gaze orienting behavior to both distal food objects and communicative interactants by 115 chimpanzees, ranging from 3 to 56 years of age. Gaze alternation between a banana and an experimenter was significantly associated with vocal and gestural communication. Pointing was the most common gesture elicited; 47 subjects pointed with the whole hand, whereas 6 subjects pointed with …
Effects of cognitive challenge on self‐directed behaviors by chimpanzees ( Pan troglodytes )
In primates, including humans, scratching and other self‐directed behaviors (SDBs) have recently been reported to be differentially displayed as a function of social interactions, anxiety‐related drugs, and response outcomes during learning tasks. Yet few studies have focused on the factors influencing SDBs in our closest living relatives, the chimpanzees ( Pan troglodytes ). Furthermore, no previous experimental study has examined handedness of …
Multimodal concomitants of manual gesture by chimpanzees (Pan troglodytes)
It is well-established that chimpanzees vocalize more in the presence of relatively large amounts of food. The present study administered four trials in random order to each of 20 chimpanzees: (1) small piece of fruit, placed near to cage (~30 cm.), (2) large piece of fruit, placed near to cage, (3) small piece of fruit, placed far from cage (~130 cm.), and (4) large piece of fruit, placed far from cage. On arrival of an experimenter, the chimpan…
Multimodal concomitants of manual gesture by chimpanzees (Pan troglodytes)
It is well-established that chimpanzees vocalize more in the presence of relatively large amounts of food. The present study administered four trials in random order to each of 20 chimpanzees: (1) small piece of fruit, placed near to cage (~30 cm.), (2) large piece of fruit, placed near to cage, (3) small piece of fruit, placed far from cage (~130 cm.), and (4) large piece of fruit, placed far from cage. On arrival of an experimenter, the chimpan…
Self-Awareness in Human and Chimpanzee Infants
The objective study of self-recognition, with a mirror and a mark applied to the face, was conducted independently by Gallup (1970) for use with chimpanzees and monkeys, and by Amsterdam (1972) for use with infant humans. Comparative psychologists have followed the model (and assumptions) set by Gallup, whereas developmental psychologists have followed a different model (e.g., Lewis & Brooks-Gunn, 1979). This article explores the assumptions in t…
Lateralized scratching in chimpanzees (Pan troglodytes)
This study evaluated laterality in scratching by chimpanzees (n = 89) during socially arousing circumstances. Hand use and the side of the body scratched was recorded during a baseline and experimental condition. In the experimental condition, chimpanzees were shown a video of other conspecifics sharing, fighting over, and consuming a watermelon. Self-touches were categorized as either rubs or scratches. The chimpanzees showed a significant right…
The Importance of Development for Comparative Primatology
It is a truism to say that primates develop, but it is also important to acknowledge that development occurs across many domains, including motor behavior, socioemotional behavior, communication, and cognition. In this review, we focus on those aspects of development that impact social cognition outcomes in infancy. Triadic engagements, such as those of joint attention, cooperation, and intentional communication, develop in the first year of life…
Primate Gesture
Communication and Developmental Milestones
What animals can tell us about attentional prerequisites of language acquisition
Theories of human language acquisition frequently posit human-unique attentional specializations to jumpstart language acquisition. There is a broad consensus that the developmental processes supporting language acquisition in our species rely on human-unique cognitive adaptions pertaining to the deployment and understanding of attention. However, close attention to the empirical evidence held to support these hypothetical psychological processes…
Comparing effects of sad melody versus sad lyrics on mood
While researchers have consistently found that music can evoke discrete emotions in people cross-culturally, there is little consensus regarding the mechanisms underpinning this effect. The present study aimed to gain further insight into how music influences emotions, investigating whether the lyrics or the melody of a sad piece of non-classical music had a greater influence on mood. The researchers presented a sample of 251 participants with is…
Pointing
Pointing is a fundamental gesture that connects individuals with their social and physical worlds. Whether communicating information about the external environment or serving to clarify to whom or what someone is referring, pointing may appear to be a uniquely human and universal action. However, it develops in varied social and cultural contexts, and even some nonhuman species point and can understand pointing cues. While there has been substant…
Psychology (10 obras) · Child and Animal Learning Development (9 obras) · Cognitive psychology (7 obras) · Developmental psychology (6 obras) · Neuroscience (6 obras) · Primate Behavior and Ecology (6 obras) · Biology (5 obras) · Cognition (4 obras) · Cognitive science (4 obras) · Computer Science (4 obras)