Journal of Comparative Psychology最新文献_第3页

Do animals treat their minds? From wild stories to lab-built realities. 动物会治疗它们的大脑吗？从荒诞的故事到实验室制造的现实。

IF 1.1 4区心理学

Journal of Comparative Psychology Pub Date : 2026-05-01 DOI: 10.1037/com0000450

Alice Auersperg

引用次数: 0

Psychological self-medication in mammals: A dialogue between natural observations and laboratory research. 哺乳动物的心理自我治疗：自然观察与实验室研究之间的对话。

IF 0.9 4区心理学

Journal of Comparative Psychology Pub Date : 2026-05-01 Epub Date: 2025-09-15 DOI: 10.1037/com0000428

Carmen Torres, Mauricio R Papini, Michael A Huffman

{"title":"Psychological self-medication in mammals: A dialogue between natural observations and laboratory research.","authors":"Carmen Torres, Mauricio R Papini, Michael A Huffman","doi":"10.1037/com0000428","DOIUrl":"10.1037/com0000428","url":null,"abstract":"The use of plants with medicinal properties by nonhuman animals has been extensively documented. However, little emphasis has been placed on evidence suggesting that animals also appear to use/consume substances with psychoactive properties. This psychological self-medication (PsycSM) hypothesis posits that the voluntary use of substances that alter emotional/mental states is guided by the substance's ability to reduce negative states or promote positive states. The objective of this narrative review is to provide a rigorous interpretation and critique of findings, point out contributions and limitations of available research, and provide a synthesis useful to design further studies aimed at testing the PsycSM hypothesis. Criteria derived from this hypothesis are used to establish behaviors as PsycSM examples. Areas for potentially useful interactions between field and laboratory research are specified. Anecdotal evidence from field observations suggests that animals voluntarily consume substances that affect their emotional state. Although laboratory research reviewed herein suggests that nonhuman animals intentionally consume substances that can affect their emotional/mental state, the underlying mechanisms are still poorly understood. One such mechanism is hypothesized to involve a reinforcement process produced by a change in the internal state contingent on substance consumption, whether to reduce negative emotions or to enhance positive emotions. The criteria for PsycSM developed in this review may guide further research into these effects. (PsycInfo Database Record (c) 2026 APA, all rights reserved).","PeriodicalId":54861,"journal":{"name":"Journal of Comparative Psychology","volume":" ","pages":"84-100"},"PeriodicalIF":0.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145066652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Very short training protocol for understanding referential cues in chimpanzees (Pan troglodytes). 非常短的训练协议，以理解参考线索的黑猩猩（类人猿）。

IF 0.9 4区心理学

Journal of Comparative Psychology Pub Date : 2026-05-01 Epub Date: 2025-06-26 DOI: 10.1037/com0000424

David A Leavens, Chelsea M Cox, William D Hopkins

引用次数: 0

Dogs (Canis familiaris) copy-all refine-later where children (Homo sapiens) overimitate. 狗（Canis familiaris）会模仿得更精细，而儿童（智人）则会过度模仿。

IF 0.9 4区心理学

Journal of Comparative Psychology Pub Date : 2026-05-01 Epub Date: 2025-07-31 DOI: 10.1037/com0000426

Carly F Fisher, Molly Byrne, Angie M Johnston

{"title":"Dogs (Canis familiaris) copy-all refine-later where children (Homo sapiens) overimitate.","authors":"Carly F Fisher, Molly Byrne, Angie M Johnston","doi":"10.1037/com0000426","DOIUrl":"10.1037/com0000426","url":null,"abstract":"Overimitation is a social learning mechanism in which an observer replicates the actions of a communicative demonstrator even if some of the actions in the process are functionally irrelevant. While many consider overimitation a uniquely human mechanism, some scholars have hypothesized that domestic dogs may overimitate because of their shared evolutionary history and pedagogical learning structures with humans. Previous literature has presented conflicting evidence regarding the presence of overimitation in domestic dogs. This study expanded upon work by Johnston et al. (2017) and directly compared 3- to 5-year-old children and domestic dogs on the same overimitation task. For both dogs and children, we demonstrated an irrelevant action followed by a relevant action and examined how often subjects reproduced this sequence across four trials. Consistent with an overimitation pattern, children reproduced the irrelevant then relevant sequence at a constant rate across four trials. However, dogs decreased the rate with which they reproduced this sequence across trials-a change which is consistent with a copy-all refine-later strategy or simple exploration. These findings support those in Johnston et al.'s (2017) study and further support the hypothesis that dogs do not overimitate like children. (PsycInfo Database Record (c) 2026 APA, all rights reserved).","PeriodicalId":54861,"journal":{"name":"Journal of Comparative Psychology","volume":" ","pages":"117-125"},"PeriodicalIF":0.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144762350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Horses (Equus caballus) successfully solve an object choice task using a human pointing gesture and a physical marker: A partial replication of Proops et al. (2010). 马（Equus caballus）使用人类指向手势和物理标记成功地解决了对象选择任务：部分复制了Proops等人（2010）。

IF 0.9 4区心理学

Journal of Comparative Psychology Pub Date : 2026-05-01 Epub Date: 2025-09-29 DOI: 10.1037/com0000429

Ivana Dumičić, Ljerka Ostojić

{"title":"Horses (Equus caballus) successfully solve an object choice task using a human pointing gesture and a physical marker: A partial replication of Proops et al. (2010).","authors":"Ivana Dumičić, Ljerka Ostojić","doi":"10.1037/com0000429","DOIUrl":"10.1037/com0000429","url":null,"abstract":"Like other domesticated species, most notably dogs, horses have been reported to follow human gestures and successfully use them to gain rewards in an object choice task. Empirical support for the hypothesis that a domain-general mechanism may underlie this ability comes from studies in which horses have successfully solved the task by using not just a human pointing gesture but also an arbitrary physical cue, namely a wooden marker. Here, we replicated the two conditions in which these two cues were used by Proops et al. (2010) with two critical changes: first, we positioned the marker out of the horses' sight, and second, we positioned the marker such that it was in the same position where the gesture would be when the experimenter showed the pointing gesture. Horses successfully solved the task using both the pointing gesture and the marker, and their performance did not differ statistically significantly between these two conditions. The robustness of this result was corroborated by complementary model comparisons, which further showed that the horses' performance was not significantly influenced by their age or sex. Our findings thus support the consistency of previously reported findings in these specific testing conditions and suggest that at least part of the horses' ability to solve the object choice task with different types of cues is based on a domain-general mechanism. (PsycInfo Database Record (c) 2026 APA, all rights reserved).","PeriodicalId":54861,"journal":{"name":"Journal of Comparative Psychology","volume":" ","pages":"134-141"},"PeriodicalIF":0.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145193972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of visual range on producer responses: Insights from humans (Homo sapiens) and an agent-based model. 视野范围对生产者反应的影响：来自人类（智人）和基于主体的模型的见解。

IF 0.9 4区心理学

Journal of Comparative Psychology Pub Date : 2026-05-01 Epub Date: 2025-10-23 DOI: 10.1037/com0000432

Laurent Avila-Chauvet, Diana Mejía Cruz, Luis Alfaro Hernández, Felipe Cabrera González

{"title":"Effect of visual range on producer responses: Insights from humans (Homo sapiens) and an agent-based model.","authors":"Laurent Avila-Chauvet, Diana Mejía Cruz, Luis Alfaro Hernández, Felipe Cabrera González","doi":"10.1037/com0000432","DOIUrl":"10.1037/com0000432","url":null,"abstract":"The Producer-Scrounger game proposes that individuals in social foraging situations tend to choose one of two strategies: (a) actively invest effort in searching for resources (producing) or (b) exploit resources discovered by others (scrounging). Models have typically given scroungers an advantage. In Vickery et al.'s (1991) model, remaining food in a patch is equally shared among scroungers regardless of their position or visual range. Similarly, agent-based models assume scroungers have a comprehensive view of the habitat, enabling them to detect all opportunities to exploit resources, while producers move randomly. This study examined the effect of visual range on producer-scrounger dynamics using a computerized behavioral task where four human participants interacted in real time within a virtual habitat. Two groups, differing in food probability (λ80 and λ20), were exposed to four experimental conditions that varied visual range by manipulating the top-down camera angle (45° or 75°) and camera distance (240 or 80 px). Results showed that the producer index was higher when the probability of finding resources increased, and highest in the 75°-240 px condition, where participants had limited depth of view but could better perceive their immediate surroundings. A modified agent-based model that included visual range parameters revealed a similar pattern. These findings highlight the importance of visual range, often underestimated in theoretical models, for producer strategies. (PsycInfo Database Record (c) 2026 APA, all rights reserved).","PeriodicalId":54861,"journal":{"name":"Journal of Comparative Psychology","volume":" ","pages":"142-154"},"PeriodicalIF":0.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145356757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Group-level matching behavior in phototaxis of acoel flatworm Praesagittifera naikaiensis. 耐开扁虫趋光性的群体匹配行为。

IF 0.9 4区心理学

Journal of Comparative Psychology Pub Date : 2026-05-01 Epub Date: 2025-09-29 DOI: 10.1037/com0000430

Hiroshi Matsui, Yumi Hata

{"title":"Group-level matching behavior in phototaxis of acoel flatworm Praesagittifera naikaiensis.","authors":"Hiroshi Matsui, Yumi Hata","doi":"10.1037/com0000430","DOIUrl":"10.1037/com0000430","url":null,"abstract":"The matching law, which posits that animals allocate their responses in proportion to the rate of reinforcement, has been supported across diverse animal taxa. Although originally formulated in the context of operant choice, matching also applies to time allocation in foraging and to Pavlovian responses, indicating its generality across behavioral domains. However, empirical evidence has thus far been largely limited to vertebrates and arthropods. Addressing the broader applicability of this principle requires extending investigations beyond these taxonomic groups, across a wider phylogenetic spectrum. Here, we examined phototactic behavior in the acoel flatworm Praesagittifera naikaiensis, a species that acquires nutrients through photosynthesis by symbiotic algae and exhibits positive phototaxis. Using a custom-built T-maze in which the number of illuminated LEDs varied across arms, we found that the animals distributed themselves in proportion to relative brightness, consistent with matching behavior. Moreover, prior exposure to light for 24 hr attenuated this pattern. This manipulation was intended to induce a state of nutritional sufficiency, and the resulting decline in phototactic responses suggests that internal physiological states can modulate even seemingly reflexive locomotor behaviors. (PsycInfo Database Record (c) 2026 APA, all rights reserved).","PeriodicalId":54861,"journal":{"name":"Journal of Comparative Psychology","volume":" ","pages":"126-133"},"PeriodicalIF":0.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145193945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Risk sensitivity in female beluga whales (Delphinapterus leucas). 雌性白鲸的风险敏感性。

IF 1.1 4区心理学

Journal of Comparative Psychology Pub Date : 2026-04-09 DOI: 10.1037/com0000445

Matthew H Babb, Katherine L Flammer, Christina Spilker, Kelsey Ford, Elizabeth Sadtler, Elizabeth D'Ambra, Sarah F Brosnan

{"title":"Risk sensitivity in female beluga whales (Delphinapterus leucas).","authors":"Matthew H Babb, Katherine L Flammer, Christina Spilker, Kelsey Ford, Elizabeth Sadtler, Elizabeth D'Ambra, Sarah F Brosnan","doi":"10.1037/com0000445","DOIUrl":"10.1037/com0000445","url":null,"abstract":"The world is full of uncertainty, often requiring decisions that involve unknown outcomes. Responses to uncertainty, or risk, have been widely studied, revealing both species-level and individual differences. Risk studies have focused on a few key species, so to increase taxon diversity, we investigated the risk sensitivity of four female beluga whales (Delphinapterus leucas) living under human care. We presented them with two options that had identical mean value but differed in their respective variability. The safe option provided four fish every time it was selected, and the risky option provided either zero or eight fish with equal probability. Belugas' preferences varied, with two whales preferring the safe option and two whales preferring the risky option. Testing across morning and afternoon sessions revealed that satiation, assumed to be higher in the afternoon due to feeding schedules, exacerbated existing tendencies toward the safe option in two whales, but did not change any of the belugas' overall preferences. In addition, whales maintained their preferences irrespective of what they had received on the previous trial. Therefore, within individuals, neither short (previous trial) nor longer (time of day) term contexts influenced individuals' preferences, suggesting that these differences were stable. Our results emphasize the importance of considering individual differences in animal decision-making. (PsycInfo Database Record (c) 2026 APA, all rights reserved).","PeriodicalId":54861,"journal":{"name":"Journal of Comparative Psychology","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147647488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cross-cultural and cross-species comparisons of mutual gaze and infant emotion: Challenging Western, Educated, Industrialized, Rich, and Democratic (WEIRD) and Barren, Institutional, Zoo, And other Rare Rearing Environments (BIZARRE) assumptions. 相互凝视和婴儿情感的跨文化和跨物种比较：挑战西方的、受过教育的、工业化的、富裕的和民主的（WEIRD）和贫瘠的、制度的、动物园的和其他罕见的养育环境（BIZARRE）假设。

IF 1.1 4区心理学

Journal of Comparative Psychology Pub Date : 2026-03-16 DOI: 10.1037/com0000444

Tayla Jaddi, Takeshi Kishimoto, Kim A Bard

{"title":"Cross-cultural and cross-species comparisons of mutual gaze and infant emotion: Challenging Western, Educated, Industrialized, Rich, and Democratic (WEIRD) and Barren, Institutional, Zoo, And other Rare Rearing Environments (BIZARRE) assumptions.","authors":"Tayla Jaddi, Takeshi Kishimoto, Kim A Bard","doi":"10.1037/com0000444","DOIUrl":"10.1037/com0000444","url":null,"abstract":"In this study of mutual gaze (MG) and emotion, using multiple groups of chimpanzee infants to compare with multiple groups of human infants, we provide a methodology to assess two deeply rooted assumptions: (1) Psychological outcomes in chimpanzees are uninfluenced by socioecological conditions, and (2) samples from humans living in Western, middle-class family settings are adequate representatives of humankind. Even though MG is widely viewed as foundational for social cognition, and gaze becomes coordinated with emotion around 1 year of age, these topics have rarely been studied in 1-year-old chimpanzees. We studied four diverse chimpanzee groups-that is, 1-year-old infants living at Chester Zoo (n = 4), in Gombe National Park (n = 12), at the Primate Research Institute (n = 3), and in a human home (n = 2)-and compared them with three diverse groups of human 1-year-olds: urban-UK (n = 8), subsistence farming-Nso (n = 12), and foraging-Aka (n = 10). MG occurred 22% of the time and did not differ across groups or species. We found no species differences in any infant Emotion or in any MG-Emotion co-occurrence pattern. In three of five types of MG-Emotion co-occurrence, the Primate Research Institute chimpanzee infants differed from at least one of the other chimpanzee groups (we reject Assumption 1), and the UK infants differed from at least one of the other human groups (we reject Assumption 2). We conclude there are meaningful influences of socioecology on the functions of some social cognition outcomes, and, thus, it is necessary to sample multiple diverse groups to detect true species differences. (PsycInfo Database Record (c) 2026 APA, all rights reserved).","PeriodicalId":54861,"journal":{"name":"Journal of Comparative Psychology","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147476521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Changes in exploratory behavior in male Lister-Hooded rats in early and late adulthood. 成年早期和晚期雄性李斯特兜帽大鼠探索行为的变化。

IF 0.9 4区心理学

Journal of Comparative Psychology Pub Date : 2026-03-12 DOI: 10.1037/com0000442

Klaudia Modlinska, Anna Chrzanowska, Katarzyna Goncikowska, Wojciech Pisula

{"title":"Changes in exploratory behavior in male Lister-Hooded rats in early and late adulthood.","authors":"Klaudia Modlinska, Anna Chrzanowska, Katarzyna Goncikowska, Wojciech Pisula","doi":"10.1037/com0000442","DOIUrl":"https://doi.org/10.1037/com0000442","url":null,"abstract":"Exploration encompasses a range of behaviors aimed at gathering information about the environment, which is then encoded and stored in memory. Memory processes support exploration by retaining past experiences, facilitating habituation to novelty, and aiding in the formation and updating of cognitive maps. As aging often leads to changes in memory function, we expected these changes to be detected by analyzing exploratory behaviors. In our experiment, we investigated the behavior of male rats at 2 and 9 months of age. We found that young rats reacted to novel objects with greater intensity and spent more time in the zone where change was introduced. In addition, they moved between the zones more frequently than the older ones. There were no differences in habituation rate, and the reaction to novelty was typical for both ages. However, older rats exhibited higher grooming levels and spent more time in the starting box. The results indicate that basic memory functions are not impaired in older rats, but the level of emotional reactions is slightly elevated compared with measures taken at a young age, which may influence their performance and lead to decreased exploratory behavior. Our findings also suggest that the rats can retain memory traces of events that occurred months earlier and show familiarity with the experimental environment. Our research indicates that behavioral changes associated with memory decline in older individuals may be linked to alterations in emotional regulation. These changes appear to have a neurobiological foundation centered on the hippocampus, where distinct regions process anxiety responses alongside memory functions. (PsycInfo Database Record (c) 2026 APA, all rights reserved).","PeriodicalId":54861,"journal":{"name":"Journal of Comparative Psychology","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2026-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147445947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0