Fear reactions of ewes to photographic images.

abstract：:The present study examined the use and making of tools to obtain foodstuffs in artificial-mound holes by five captive, group-living Sumatran orangutans (Pongo pygmaeus abelii). Three adult orangutans frequently stripped leaves and twigs from a branch provided (tool-making), and then inserted the tool into a hole to ob...

journal_title：Behavioural processes

authors： Nakamichi M

更新日期：2004-01-30 00:00:00

abstract：:The territorial defense of mating sites by males should be favored when female monopolization is possible. Such monopolization should occur in species in which females emerge asynchronously, since males may have time to copulate with one female before the arrival of other. However, regions with smaller reproductive wi...

journal_title：Behavioural processes

authors： Peixoto PE,Medina AM,Mendoza-Cuenca L

更新日期：2014-11-01 00:00:00

abstract：:Although contexts play many roles during training and also during testing, over the last four decades theories of learning have predominantly focused on one or the other of the two families of functions served by contexts. In this selective review, we summarize recent data concerning these two functions and their inte...

journal_title：Behavioural processes

authors： Urcelay GP,Miller RR

更新日期：2014-05-01 00:00:00

abstract：:Research on categorization has changed over time, and some of these changes resemble how Wittgenstein's views changed from his Tractatus Logico-Philosophicus to his Philosophical Investigations. Wittgenstein initially focused on unambiguous, abstract, parsimonious, logical propositions and rules, and on independent, s...

journal_title：Behavioural processes

authors： Shimp CP

更新日期：2004-06-30 00:00:00

abstract：:Various hypotheses have been proposed to explain the function of alloparental behavior in cooperatively breeding species. We examined whether alloparental experience as juveniles enhanced later parental care and reproductive success in the prairie vole (Microtus ochrogaster), a cooperatively breeding rodent. Juveniles...

journal_title：Behavioural processes

authors： Stone AI,Mathieu D,Griffin L,Bales KL

更新日期：2010-01-01 00:00:00

abstract：:In many primates, infants possess distinctive coloration that changes as a function of age. This colour is thought to serve the purpose of eliciting caretaking behaviour from the mother as well as other conspecifics. The present study investigated the responses of adult female rhesus macaques (Macaca mulatta) to pictu...

journal_title：Behavioural processes

authors： Gerald MS,Waitt C,Maestripieri D

更新日期：2006-11-01 00:00:00

abstract：:In the first experiment, farmed blue foxes were allowed to choose for 1 week between four standard farm cages equipped with different floor materials: plastic-coated wire mesh, dry wood, dry sand and wet (summer) or icy (winter) sand. Resting consisted of 10-15 separate bouts/day occupying 50-60% of the total 24-h. Th...

journal_title：Behavioural processes

authors： Harri M,Kasanen S,Mononen J,Sepponen J

更新日期：2000-04-03 00:00:00

abstract：:Being motivated means exerting effort toward a goal. The 'law of least work' emphasizes a preference for exerting relatively less effort. The law crosses boundaries among species and between physical and mental work. Organisms should be highly sensitive to shifts in effort-reward balance (ERB) in order to make optimal...

journal_title：Behavioural processes

authors： Knauss ZT,Filipovic M,Smith KA,Queener MM,Lubera JA,Bolden-Hall NM,Smith JP,Goldsmith RS,Bischoff JE,Miller MK,Cromwell HC

更新日期：2020-12-01 00:00:00

abstract：:This study examines the ability of Octopus vulgaris to prey on bivalve molluscs showing that octopuses exhibited the same behavioural pattern irrespective of the prey species. When the initial pulling method did not result efficient octopuses skipped to drilling accompanied by an increase in the handling time. A compl...

journal_title：Behavioural processes

authors： Fiorito G,Gherardi F

更新日期：1999-05-03 00:00:00

abstract：:Social interactions/situations have dramatic influences on motivation. Creating animal models examining these influences promotes a better understanding of the psychological and biological underpinnings of social motivation. Rodents are sensitive to social history/experience during associative conditioning and food-sh...

journal_title：Behavioural processes

authors： Douglas HM,Halverstadt BA,Reinhart-Anez P,Webber ES,Cromwell HC

更新日期：2018-12-01 00:00:00

abstract：:Mated pairs of Mongolian gerbils were rejoined by two of their own young, of both sexes, after periods of separation starting when the young were four or seven weeks of age and lasting either one or four weeks. An additional group of young was separated from their parents when six weeks old, this time for two weeks. T...

journal_title：Behavioural processes

authors： Le Guelte L,le Berre M,Coulon J,Amagat C

更新日期：1986-06-01 00:00:00

abstract：:In a bidirectional control procedure, rats had their first opportunity to push a joystick immediately after observing, from an adjacent compartment, the joystick moving 50 times either to the right or to the left, with each movement signalling the delivery of inaccessible food. Half of these animals observed the joyst...

journal_title：Behavioural processes

authors： Heyes CM,Jaldow E,Nokes T,Dawson GR

更新日期：1994-08-01 00:00:00

abstract：:As reinforcers are delivered for a particular response, that response increases. Other similar responses also increase, with the extent to which this increase is seen being positively related to the similarity between the responses. This process, called induction, is pronounced during initial response acquisition, and...

journal_title：Behavioural processes

authors： Jarmolowicz DP,Hudnall JL,Darden AC,Lemley SM,Sofis MJ

更新日期：2015-11-01 00:00:00

abstract：:Source memory, a facet of episodic memory, is the memory of the origin of information. Whereas source memory in rats is sustained for at least a week, spatial memory degraded after approximately a day. Different forgetting functions may suggest that two memory systems (source memory and spatial memory) are dissociated...

journal_title：Behavioural processes

authors： Dalecki SJ,Panoz-Brown DE,Crystal JD

更新日期：2017-12-01 00:00:00

abstract：:This experiment was carried out to investigate the long-term effects of enhancing cage complexity on behavioural measures of welfare in laboratory rats. We housed 72 rats in groups of four in either 'enriched' or 'unenriched' cages for six weeks. Scan and focal animal sampling were conducted in both the light and dark...

journal_title：Behavioural processes

authors： Abou-Ismail UA,Burman OH,Nicol CJ,Mendl M

更新日期：2010-10-01 00:00:00

abstract：:Bilateral section of the efferent pathway (tractus occipitomesencephalicus) from the archistriatum of the duck depresses fear-motivated responses as measured by (a) latency to escape in a runway test; (b) latency to approach and drink in the experimenter's presence following water deprivation, and (c) number of agonis...

journal_title：Behavioural processes

authors： Martin JT,Delanerolle N,Phillips RE

更新日期：1979-12-01 00:00:00

abstract：:The effect of tail-pinch stress interpolated between the saccharin conditioned stimulus (CS) and the illness-inducing unconditioned stimulus (US) during long-trace taste-aversion conditioning was examined in young- and old adult rats with a two-cylinder (saccharin versus water) test. A 2 x 2 x 4 factorial ANOVA was pe...

journal_title：Behavioural processes

authors： Misanin JR,Kaufhold SE,Paul RL,Hinderliter CF,Anderson MJ

更新日期：2006-01-10 00:00:00

abstract：:Although natural selection may favour the evolution of an optimal brood size, unpredictable environmental factors can intervene to render the brood either considerably larger or smaller than this optimum. The question therefore arises as to how parents should respond to unusually large or small litters. Solutions to t...

journal_title：Behavioural processes

authors： Mendl M

更新日期：1994-04-01 00:00:00

abstract：:It is well established that wheel running in rats produces conditioned taste avoidance; that is, rats that run in wheels after consuming a novel-tasting solution later consume less of that solution than rats that do not run. In experiment 1, we found that wheel running also produces conditioned disgust reactions, indi...

journal_title：Behavioural processes

authors： Grant VL,McDonald SV,Sheppard RC,Caldwell CL,Heeley TH,Brown AR,Martin GM

更新日期：2012-06-01 00:00:00

abstract：:Participants repeatedly played a self-control game in which choice of the higher of two monetary rewards on the present trial reduced the overall reward ('alone condition'). Other participants played a prisoner's dilemma (social cooperation) game in which choices alternated so that overall reward-reducing consequences...

journal_title：Behavioural processes

authors： Brown J,Rachlin H

更新日期：1999-09-01 00:00:00

abstract：:Building on the work of Ralph Miller and coworkers (Miller and Matzel, 1988; Denniston et al., 2001; Stout and Miller, 2007), I propose a new formalization of the comparator hypothesis that seeks to overcome some shortcomings of existing formalizations. The new model, dubbed ecco for "Error-Correcting COmparisons," re...

journal_title：Behavioural processes

authors： Ghirlanda S

更新日期：2018-09-01 00:00:00

abstract：:Aposematic prey advertise their toxicity to predators using conspicuous warning signals, which predators learn to use to reduce their intake of toxic prey. Like other types of prey, aposematic prey often differ in body size, both within and between species. Increasing body size can increase signal size, which make lar...

journal_title：Behavioural processes

authors： Smith KE,Halpin CG,Rowe C

更新日期：2014-11-01 00:00:00

abstract：:In dyads of adult male Gryllus bimaculatus, a dominance relationship is established at the first agonistic interaction between the two insects. The comparison of the aggressive behaviour displayed by adult males shows that field crickets act in an identical manner when confronted with an unfamiliar opponent or with on...

journal_title：Behavioural processes

authors： Khazraie K,Campan M

更新日期：1997-04-01 00:00:00

abstract：:In the present experiments, after training rats in a standard fixed interval (FI) 30s schedule, we induced a change in the strategy employed during gap trials, by presenting during FI with gaps training, 9-s interruptions of the FI discriminative stimulus in 40% of the trials; in one type of interruption, after the di...

journal_title：Behavioural processes

authors： Orduña V,Bouzas A

更新日期：2011-11-01 00:00:00

abstract：:Mathematical principles of reinforcement (MPR) attempts to integrate the empirical laws of reinforcement schedules that have accumulated over the decades. MPR is based on three principles: incentives excite behavior; there are temporal constraints on responding; and coupling of responses to reinforcers strengthens beh...

journal_title：Behavioural processes

authors： Reilly MP

更新日期：2003-04-28 00:00:00

abstract：:We studied seasonal habitat use of female, mixed-sex and male groups in a free-ranging mouflon (Ovis gmelini) population. The three group types differed in the use of the five different habitats (forests, broom moorlands, heather moorlands, meadows and rocky areas) only in spring (lambing period) and in autumn (ruttin...

journal_title：Behavioural processes

authors： Cransac N,Hewison AJ

更新日期：1997-10-01 00:00:00

abstract：:Development of a widely accepted vocabulary referring to various types of social learning has made important contributions to decades of progress in analyzing the role of socially acquired information in the development of behavioral repertoires. It is argued here that emergence of a consensus vocabulary, while facili...

journal_title：Behavioural processes

authors： Galef BG

更新日期：2013-11-01 00:00:00

abstract：:A group of rhesus monkeys (Macaca mulatta) living in a large enclosure received food which varied in desirability and spatial distribution. Feeding and agonistic behaviour of four hierarchical subgroups were analyzed. In general, there was less aggression and improved feeding rates with dispersed food than with piled ...

journal_title：Behavioural processes

authors： Belzung C,Anderson JR

更新日期：1986-04-01 00:00:00

abstract：:In two experiments, pigeons' responding to a visual flicker-rate continuum was established by a maintained generalization procedure. For both experiments, variable-interval reinforcement was available for responses during stimuli from one half of the stimulus continuum while responses during other stimuli were extingu...

journal_title：Behavioural processes

authors： Hinson JM,Higa JJ

更新日期：1988-09-01 00:00:00

abstract：:Although animals typically prefer to exert less effort rather than more effort to obtain food, the present research shows that requiring greater effort to obtain food at a particular location appears to increase the value of that location. In Experiment 1, pigeons' initial preference for one feeder was significantly r...

journal_title：Behavioural processes

authors： Friedrich AM,Zentall TR

更新日期：2004-11-30 00:00:00