Two strings to choose from: do ravens pull the easier one?

abstract：:In Experiment 1 each rat received two different fixed series of three trials each. The unconditioned stimulus occurred on Trial 1 of one series and on Trial 3 of the other series, all other trials being nonreinforced. Previous Pavlovian investigations have shown that rats can remember the immediately prior reward outc...

journal_title：Animal cognition

authors： Martins AP,Miller RM,Capaldi EJ

更新日期：2008-01-01 00:00:00

abstract：:Previous studies have found that Carolina chickadees and tufted titmice use a predator's head orientation to determine risk, taking fewer seeds from a feeder if an avian predator model's head is facing the feeder while ignoring the head orientation. In addition to head orientation, eyes are a cue of predator risk. In ...

journal_title：Animal cognition

authors： Kyle SC

更新日期：2020-11-18 00:00:00

abstract：:Visual lateralization in different aspects of social behaviour has been found for numerous species of vertebrates ranging from fish to mammals. For inspection of a shoal mate, many fishes show a left eye-right hemisphere preference. Here, we tested the hypothesis that in fish, there is a key cue in the conspecific app...

journal_title：Animal cognition

authors： Karenina KA,Giljov AN,Malashichev YB

更新日期：2013-03-01 00:00:00

abstract：:In many species, males and females have different reproductive roles and/or differ in their ecological niche. Since in these cases the two sexes often face different cognitive challenges, selection may promote some degree of cognitive differentiation, an issue that has received relatively little attention so far. We i...

journal_title：Animal cognition

authors： Lucon-Xiccato T,Bisazza A

更新日期：2016-07-01 00:00:00

abstract：:Scatter hoarding birds are known for their accurate spatial memory. In a previous experiment, we tested the retrieval accuracy in marsh tits in a typical laboratory set-up for this species. We also tested the performance of humans in this experimental set-up. Somewhat unexpectedly, humans performed much better than ma...

journal_title：Animal cognition

authors： Urhan AU,Brodin A

更新日期：2015-05-01 00:00:00

abstract：:Locating food and refuge is essential for an animal's survival. However, little is known how mammals navigate under natural conditions and cope with given environmental constraints. In a series of six experiments, I investigated landmark-based navigation in free-ranging Columbian ground squirrels (Spermophilus columbi...

journal_title：Animal cognition

authors： Vlasak AN

更新日期：2006-01-01 00:00:00

abstract：:Recent research with Rooks has demonstrated impressive tool-using abilities in captivity despite this species' classification as a non-tool-user in the wild. Here, we explored whether another non-tool-using corvid, the Eurasian Jay, would be capable of similar feats and investigated the relative contributions of causa...

journal_title：Animal cognition

authors： Cheke LG,Bird CD,Clayton NS

更新日期：2011-05-01 00:00:00

abstract：:Instrumental learning guides behavior toward resources. When such resources are no longer available, approach to previously reinforced locations is reduced, a process called extinction. The present experiments are concerned with factors affecting the extinction of acquired behaviors in toads. In previous experiments, ...

journal_title：Animal cognition

authors： Puddington MM,Papini MR,Muzio RN

更新日期：2018-01-01 00:00:00

abstract：:To assess the influence of different procedures on chimpanzees' performance in object-choice tasks, five adult chimpanzees were tested using three experimenter-given cues to food location: gazing, glancing, and pointing. These cues were delivered to the subjects in an identical fashion but were deployed within the con...

journal_title：Animal cognition

authors： Barth J,Reaux JE,Povinelli DJ

更新日期：2005-04-01 00:00:00

abstract：:As with humans, vocal communication is an important social tool for nonhuman primates. Common marmosets (Callithrix jacchus) often produce whistle-like 'phee' calls when they are visually separated from conspecifics. The neural processes specific to phee call perception, however, are largely unknown, despite the possi...

journal_title：Animal cognition

authors： Kato M,Yokoyama C,Kawasaki A,Takeda C,Koike T,Onoe H,Iriki A

更新日期：2018-05-01 00:00:00

abstract：:Now more than ever animal studies have the potential to test hypotheses regarding how cognition evolves. Comparative psychologists have developed new techniques to probe the cognitive mechanisms underlying animal behavior, and they have become increasingly skillful at adapting methodologies to test multiple species. M...

journal_title：Animal cognition

authors： MacLean EL,Matthews LJ,Hare BA,Nunn CL,Anderson RC,Aureli F,Brannon EM,Call J,Drea CM,Emery NJ,Haun DB,Herrmann E,Jacobs LF,Platt ML,Rosati AG,Sandel AA,Schroepfer KK,Seed AM,Tan J,van Schaik CP,Wobber V

更新日期：2012-03-01 00:00:00

abstract：:Single-trial learning and long-term memory of "what" and "who" information were examined in an adult gorilla (Gorilla gorilla gorilla). We presented the gorilla with a to-be-remembered food item at the time of study. In Experiment 1, following a retention interval of either approximately 7 min or 24 h, the gorilla res...

journal_title：Animal cognition

authors： Schwartz BL,Colon MR,Sanchez IC,Rodriguez IA,Evans S

更新日期：2002-06-01 00:00:00

abstract：:A dynamic 3-D virtual environment was constructed for humans as an open-field analogue of Blaisdell and Cook's (2005) pigeon foraging task to determine if humans, like pigeons, were capable of integrating separate spatial maps. Participants used keyboard keys and a mouse to search for a hidden goal in a 4x4 grid of ra...

journal_title：Animal cognition

authors： Sturz BR,Bodily KD,Katz JS

更新日期：2006-07-01 00:00:00

abstract：:Orienting responses (ORs) are whole-organism reflexes that are elicited by innocuous stimuli, and which decrease in magnitude after stimulus repetition. ORs represent relatively simple responses that can be used to study attentional processes, and are modulated by the organism's state, including arousal and activation...

journal_title：Animal cognition

authors： do Nascimento BG,Oliveira HSTOE,Silva HTL,de Siqueira-Silva DH,Lima-Maximino M,Maximino C

更新日期：2020-09-01 00:00:00

abstract：:When trained in a rectangular arena, some research has suggested that rats are guided by local features rather than overall boundary geometry. We explored this hypothesis using the terrestrial toad, Rhinella arenarum, as a comparative contrast. In two experiments, toads were trained to find a water-reward goal locatio...

journal_title：Animal cognition

authors： Sotelo MI,Alcalá JA,Bingman VP,Muzio RN

更新日期：2020-01-01 00:00:00

abstract：:Pigs are a valuable animal model for studying neurodevelopment in humans due to similarities in brain structure and growth. The development and validation of behavioral tests to assess learning and memory in neonatal piglets are needed. The present study evaluated the capability of 2-week old piglets to acquire a nove...

journal_title：Animal cognition

authors： Elmore MR,Dilger RN,Johnson RW

更新日期：2012-07-01 00:00:00

abstract：:Nonhuman animals demonstrate a number of impressive quantitative skills such as counting sets of items, comparing sets on the basis of the number of items or amount of material, and even responding to simple arithmetic manipulations. In this experiment, capuchin monkeys were presented with a computerized task designed...

journal_title：Animal cognition

authors： Beran MJ

更新日期：2008-01-01 00:00:00

abstract：:While the effects of lead pollution have been well studied in vertebrates, it is unclear to what extent lead may negatively affect insect cognition. Lead pollution in soils can elevate lead in plant tissues, suggesting it could negatively affect neural development of insect herbivores. We used the cabbage white butter...

journal_title：Animal cognition

authors： Philips KH,Kobiela ME,Snell-Rood EC

更新日期：2017-01-01 00:00:00

abstract：:Learning abilities are exhibited by many animals, including insects. However, sedentary species are typically believed to have low capacities and requirements for learning. Despite this view, recent studies show that even such inconspicuous organisms as larval antlions, which employ an ambush predation strategy, are c...

journal_title：Animal cognition

authors： Kuszewska K,Miler K,Filipiak M,Woyciechowski M

更新日期：2016-09-01 00:00:00

abstract：:This study tests whether the face-processing system of humans and a nonhuman primate species share characteristics that would allow for early and quick processing of socially salient stimuli: a sensitivity toward conspecific faces, a sensitivity toward highly practiced face stimuli, and an ability to generalize change...

journal_title：Animal cognition

authors： Neiworth JJ,Hassett JM,Sylvester CJ

更新日期：2007-04-01 00:00:00

abstract：:A hallmark of the human language faculty is the use of syntactic rules. The natural vocalizations of animals are syntactically simple, but several studies indicate that animals can detect and discriminate more complex structures in acoustic stimuli. However, how they discriminate such structures is often not clear. Us...

journal_title：Animal cognition

authors： van Heijningen CA,Chen J,van Laatum I,van der Hulst B,ten Cate C

更新日期：2013-03-01 00:00:00

abstract：:Movement recognition is central to visual perception and cognition, yet its origins are poorly understood. Can newborn animals encode and recognize movements at the onset of vision, or does this ability have a protracted developmental trajectory? To address this question, we used an automated controlled-rearing method...

journal_title：Animal cognition

authors： Goldman JG,Wood JN

更新日期：2015-05-01 00:00:00

abstract：:The ability of animals to communicate using gaze is a rich area of research. How domestic dogs (Canis lupus familiaris) use and respond to the gaze of humans is an area of particular interest. This study examined how three groups of domestic dogs from different populations (free-ranging dogs, pet dogs, and shelter dog...

journal_title：Animal cognition

authors： Brubaker L,Bhattacharjee D,Ghaste P,Babu D,Shit P,Bhadra A,Udell MAR

更新日期：2019-11-01 00:00:00

abstract：:This study investigated the effects of both environmental enrichment and individual behavioural characteristics on spatial cognitive capabilities of pigs, using a novel latent spatial learning paradigm based on Tolman's detour experiments (1948). Pigs were housed either in 'barren' pens or in pens enriched with straw ...

journal_title：Animal cognition

authors： Jansen J,Bolhuis JE,Schouten WG,Spruijt BM,Wiegant VM

更新日期：2009-03-01 00:00:00

abstract：:Two experiments assessed the ability of four adult female chimpanzees to categorize natural objects. Chimpanzees were initially trained to match different color photographs of familiar objects from four possible categories. In training, all the comparison stimuli were from the same category in one condition, and from ...

journal_title：Animal cognition

authors： Tanaka M

更新日期：2001-11-01 00:00:00

abstract：:One model of signal evolution is based on the notion that behaviours become increasingly detached from their original biological functions to obtain a communicative value. Selection may not always favour the evolution of such transitions, for instance, if signalling is costly due to predators usurping signal productio...

journal_title：Animal cognition

authors： Dahl CD,Wyss C,Zuberbühler K,Bachmann I

更新日期：2018-07-01 00:00:00

abstract：:Humans and nonhuman primates can learn about the organization of stimuli in the environment using implicit sequential pattern learning capabilities. However, most previous artificial grammar learning studies with nonhuman primates have involved relatively simple grammars and short input sequences. The goal in the curr...

journal_title：Animal cognition

authors： Heimbauer LA,Conway CM,Christiansen MH,Beran MJ,Owren MJ

更新日期：2018-03-01 00:00:00

abstract：:Dogs' production of referential communicative signals, i.e., showing, has gained increasing scientific interest over the last years. In this paper, we investigate whether shared information about the present and the past affects success and form of dog-human interactions. Second, in the context of showing, owners have...

journal_title：Animal cognition

authors： Henschel M,Winters J,Müller TF,Bräuer J

更新日期：2020-09-01 00:00:00

abstract：:In a previous study, Kuroshima and colleagues demonstrated that capuchin monkeys (Cebus apella) learned to discriminate between a "knower" who inspected a box for food, and a "guesser" who did not. The aim of the present study was to specify whether the subjects learned a simple conditional discrimination or a causal ...

journal_title：Animal cognition

authors： Kuroshima H,Fujita K,Adachi I,Iwata K,Fuyuki A

更新日期：2003-12-01 00:00:00

abstract：:Wild animals face the challenge of locating feeding sites distributed across broad spatial and temporal scales. Spatial memory allows animals to find a goal, such as a productive feeding patch, even when there are no goal-specific sensory cues available. Because there is little experimental information on learning and...

journal_title：Animal cognition

authors： Lührs ML,Dammhahn M,Kappeler PM,Fichtel C

更新日期：2009-07-01 00:00:00