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| Author | De Cremer, D.; van Dijk, E. | ||||
| Title | Leader--Follower Effects in Resource Dilemmas: The Roles of Leadership Selection and Social Responsibility | Type | Journal Article | ||
| Year | 2008 | Publication | Group Processes Intergroup Relations | Abbreviated Journal  |
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| Volume | 11 | Issue | 3 | Pages | 355-369 |
| Keywords | followers, leadership selection, resource allocations, resource dilemmas, social responsibility | ||||
| Abstract | Previous research on the allocation of scarce resources shows that when people are assigned labels of leader or follower in their group, leaders allocate more of the scarce resources to themselves than followers do. In three laboratory studies, we examine the idea that how people are selected for the leader role (i.e. election or appointment) determines whether leaders take more or equal shares (relative to followers) from a common resource. In a first experiment, we show that participants were more accepting of norm violating behavior by an appointed versus elected leader. In a second experiment, we show that when participants were assigned to a leader or follower role, allocations of appointed leaders differed significantly from those of elected leaders and followers, whereas there was no difference between the two latter conditions. Moreover, elected leaders were shown to feel more social responsibility than both appointed leaders and followers. In a final experiment, we show that when participants were primed with the concept of social responsibility (relative to a neutral condition) no difference in allocations between appointed and elected leaders emerged. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 4805 | ||
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| Author | Krishnan, A.; Gandour, J.T.; Ananthakrishnan, S.; Bidelman, G.M.; Smalt, C.J. | ||||
| Title | Functional ear (a)symmetry in brainstem neural activity relevant to encoding of voice pitch: A precursor for hemispheric specialization? | Type | Journal Article | ||
| Year | Publication | Brain and Language | Abbreviated Journal |
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| Volume | In Press, Corrected Proof | Issue | Pages | ||
| Keywords | Auditory; Human; Brainstem; Pitch; Language; Mandarin Chinese; Fundamental frequency-following response (FFR); Functional ear asymmetry; Experience-dependent plasticity; Subcortical | ||||
| Abstract | Pitch processing is lateralized to the right hemisphere; linguistic pitch is further mediated by left cortical areas. This experiment investigates whether ear asymmetries vary in brainstem representation of pitch depending on linguistic status. Brainstem frequency-following responses (FFRs) were elicited by monaural stimulation of the left and right ear of 15 native speakers of Mandarin Chinese using two synthetic speech stimuli that differ in linguistic status of tone. One represented a native lexical tone (Tone 2: T2); the other, T2', a nonnative variant in which the pitch contour was a mirror image of T2 with the same starting and ending frequencies. Two 40-ms portions of f0 contours were selected in order to compare two regions (R1, early; R2 late) differing in pitch acceleration rate and perceptual saliency. In R2, linguistic status effects revealed that T2 exhibited a larger degree of FFR rightward ear asymmetry as reflected in f0 amplitude relative to T2'. Relative to midline (ear asymmetry = 0), the only ear asymmetry reaching significance was that favoring left ear stimulation elicited by T2'. By left- and right-ear stimulation separately, FFRs elicited by T2 were larger than T2' in the right ear only. Within T2', FFRs elicited by the earlier region were larger than the later in both ears. Within T2, no significant differences in FFRS were observed between regions in either ear. Collectively, these findings support the idea that origins of cortical processing preferences for perceptually-salient portions of pitch are rooted in early, preattentive stages of processing in the brainstem. | ||||
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| ISSN | 0093-934x | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5391 | ||
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| Author | Maros, K.; Boross, B.; Kubinyi, E. | ||||
| Title | Approach and follow behaviour – possible indicators of the human-horse relationship | Type | Abstract | ||
| Year | 2010 | Publication | Interaction Studies | Abbreviated Journal |
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| Volume | 11 | Issue | 3 | Pages | 410-427 |
| Keywords | Approach; Follow; Human– Horse Interaction | ||||
| Abstract | The aim of our study was to analyze the behavioural responses of horses (N = 51) to familiar humans and to find factors that may affect these responses in three tests: (1) approach to, (2) standing beside, and (3) following the familiar person. We investigated the impacts of horse-related factors (gender and age) and human-related factors (type of work, housing management, amount of handling, number of handlers and training to follow).<br xmlns=“http://pub2web.metastore.ingenta.com/ns/”></br> Horses with one handler needed less time to approach the human than horses with more handlers. Standing beside the human correlated positively with following. Following was mainly affected by training.<br xmlns=“http://pub2web.metastore.ingenta.com/ns/”></br> According to our results, the number of handlers has an important effect on horses' responses to familiar humans, especially regarding approach and follow behaviour. However, following behaviour is fundamentally determined by training. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5728 | ||
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| Author | Schloegl, C.; Kotrschal, K.; Bugnyar, T. | ||||
| Title | Gaze following in common ravens, Corvus corax: ontogeny and habituation | Type | Journal Article | ||
| Year | 2007 | Publication | Animal Behaviour. | Abbreviated Journal |
Anim. Behav. |
| Volume | 74 | Issue | 4 | Pages | 769-778 |
| Keywords | Corvus corax; gaze following; habituation; ontogenetic development; raven | ||||
| Abstract | Co-orientation with others by using their gaze direction is considered to be adaptive for detecting food or predators or monitoring social interactions. Like the great apes, common ravens are capable of following human experimenters' gaze direction not only into distant space but also behind visual barriers. We investigated the ontogenetic development of these abilities by confronting birds with a human foster parent looking up (experiment 1) and behind visual barriers (experiment 3) and their modification by habituation (experiments 2 and 4). We tested a group of 12 hand-reared ravens during their first 10 months of life. Ravens responded to others' look-ups soon after fledging but could track their gaze behind a visual barrier only 4 months later, at the age they usually become independent from their parents. Furthermore, ravens quickly ceased responding to repeated look-ups by the model, but did not habituate to repeated gaze cues directed behind a barrier. Our findings support the idea that the two modes of gaze following reflect different cognitive levels in ravens and, possibly, have different functions. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 4204 | ||
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| Author | B. Agnetta,; B. Hare,; M. Tomasello, | ||||
| Title | Cues to food location that domestic dogs (Canis familiaris) of different ages do and do not use | Type | Journal Article | ||
| Year | 2000 | Publication | Animal Cognition | Abbreviated Journal |
Anim. Cogn. |
| Volume | 3 | Issue | 2 | Pages | 107-112 |
| Keywords | Dogs – Arctic wolves – Social cognition – Gaze following – Communication | ||||
| Abstract | Autoren B. Agnetta, B. Hare, M. Tomasello Zusammenfassung The results of three experiments are reported. In the main study, a human experimenter presented domestic dogs (Canis familiaris) with a variety of social cues intended to indicate the location of hidden food. The novel findings of this study were: (1) dogs were able to use successfully several totally novel cues in which they watched a human place a marker in front of the target location; (2) dogs were unable to use the marker by itself with no behavioral cues (suggesting that some form of human behavior directed to the target location was a necessary part of the cue); and (3) there were no significant developments in dogs' skills in these tasks across the age range 4 months to 4 years (arguing against the necessity of extensive learning experiences with humans). In a follow-up study, dogs did not follow human gaze into “empty space” outside of the simulated foraging context. Finally, in a small pilot study, two arctic wolves (Canis lupus) were unable to use human cues to locate hidden food. These results suggest the possibility that domestic dogs have evolved an adaptive specialization for using human-produced directional cues in a goal-directed (especially foraging) context. Exactly how they understand these cues is still an open question. Schlüsselwörter Key words Dogs – Arctic wolves – Social cognition – Gaze following – Communication |
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 598 | ||
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| Author | Houpt, K.A.; Feldman, J. | ||||
| Title | Animal behavior case of the month. Aggression toward a neonatal foal by its dam | Type | Journal Article | ||
| Year | 1993 | Publication | Journal of the American Veterinary Medical Association | Abbreviated Journal |
J Am Vet Med Assoc |
| Volume | 203 | Issue | 9 | Pages | 1279-1280 |
| Keywords | Animals; Animals, Newborn; *Behavior, Animal; Female; Follow-Up Studies; Horses/*psychology; *Maternal Behavior; Rejection (Psychology); Restraint, Physical/veterinary | ||||
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| Address | Department of Physiology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853-6401 | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0003-1488 | ISBN | Medium | ||
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| Notes | PMID:8253618 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 36 | ||
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| Author | Aronson, L. | ||||
| Title | Animal behavior case of the month. Aggression directed toward other horses | Type | Journal Article | ||
| Year | 1998 | Publication | Journal of the American Veterinary Medical Association | Abbreviated Journal |
J Am Vet Med Assoc |
| Volume | 213 | Issue | 3 | Pages | 358-359 |
| Keywords | *Aggression; Animals; *Behavior, Animal; Follow-Up Studies; Horse Diseases/*diagnosis/drug therapy/psychology; Horses/*psychology; Housing, Animal; Hypothyroidism/diagnosis/drug therapy/*veterinary; Male; Physical Examination/veterinary; Thyroxine/blood/therapeutic use | ||||
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| Address | Department of Surgery, School of Veterinary Medicine, Tufts University, North Grafton, MA 01536, USA | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0003-1488 | ISBN | Medium | ||
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| Notes | PMID:9702222 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 1935 | ||
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| Author | Dart, A.J.; Snyder, J.R.; Pascoe, J.R.; Meagher, D.M.; Wilson, W.D. | ||||
| Title | Prepurchase evaluation of horses: 134 cases (1988-1990) | Type | Journal Article | ||
| Year | 1992 | Publication | Journal of the American Veterinary Medical Association | Abbreviated Journal |
J Am Vet Med Assoc |
| Volume | 201 | Issue | 7 | Pages | 1061-1067 |
| Keywords | Animals; Follow-Up Studies; Horse Diseases/*diagnosis/radiography; Horses; Interviews; Lameness, Animal/*diagnosis/radiography; Physical Examination/*veterinary; Retrospective Studies; Telephone | ||||
| Abstract | To quantify some components of prepurchase evaluations in horses, records from 134 evaluations performed during a 2-year period were reviewed and the outcome was determined via telephone follow-up interview. Sixty-two percent of the prepurchase evaluations had been performed at the clinic and 38% had been performed in the field by the ambulatory service. All evaluations included physical and lameness examinations, whereas radiography (49%), endoscopy (15%), nerve blocking (5%), transrectal palpation (3%), hematologic analysis (2%), electrocardiography (2%), drug testing for analgesic agents (2%), and ultrasonography of the flexor tendons (1%) were not always performed. Fifty-nine percent of horses evaluated at the clinic were radiographed, compared with 33% of horses evaluated in the field (P less than 0.05). Thirty-seven percent of horses evaluated were judged serviceable for their intended use. Thirty-five percent of horses evaluated at the clinic were assessed to be serviceable, compared with 41% of those evaluated in the field (P less than 0.05). Horses used for pleasure riding (48%) tended to be considered serviceable more often than horses used for more athletic endeavors (3-day eventing, 33%; hunter/jumper, 24%; show, 31%; dressage, 30%). The most common basis for finding a horse unserviceable was lameness (88%).(ABSTRACT TRUNCATED AT 250 WORDS) | ||||
| Address | Veterinary Medical Teaching Hospital, University of California, Davis 95616 | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0003-1488 | ISBN | Medium | ||
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| Notes | PMID:1429136 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3753 | ||
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| Author | Itakura, S. | ||||
| Title | Gaze Following and Joint Visual Attention in Nonhuman Animals | Type | Journal Article | ||
| Year | 2004 | Publication | Japanese Psychological Research | Abbreviated Journal |
Jpn. Psychol. Res. |
| Volume | 3 | Issue | Pages | 216-226 | |
| Keywords | gaze-following; joint visual attention; theory of mind; nonhuman animal | ||||
| Abstract | n this paper, studies of gaze-following and joint visual attention in nonhuman animals are reviewed from the theoretical perspective of Emery (2000). There are many studies of gaze-following and joint visual attention in nonhuman primates. The reports concern not only adult individuals but also the development of these abilities. Studies to date suggest that monkeys and apes are able to follow the gaze of others, but only apes can understand the seeing-knowing relationship with regards to conspecifics in competitive situations. Also, there have recently been some reports of ability to follow the gaze of humans in domestic animals, such as dogs or horses, interacting with humans. These domestic animals are considered to have acquired this ability during their long history of selective breeding by humans. However, we need to clarify social gaze parameters in various species to improve our knowledge of the evolution of how we process others gazing, attention, and mental states. | ||||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 545 | ||
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| Author | Scheidhacker, M.; Bender, W.; Vaitl, P. | ||||
| Title | Die Wirksamkeit des therapeutischen Reitens bei der Behandlung chronisch schizophrener Patienten | Type | Journal Article | ||
| Year | 1991 | Publication | Der Nervenarzt | Abbreviated Journal |
Nervenarzt |
| Volume | 62 | Issue | 5 | Pages | 283-287 |
| Keywords | Adaptation, Psychological; Adult; Animals; Attention; Chronic Disease; Female; Follow-Up Studies; *Horses; Humans; Male; Psychiatric Status Rating Scales; Psychotherapy/*methods; Schizophrenia/*rehabilitation; *Schizophrenic Psychology; Self Concept; *Sports | ||||
| Abstract | After describing horse-riding as a facility in managing mentally ill patients, a program for chronic schizophrenic in-patients is presented. Clinical experience with this program and also results of a controlled study are reported. The therapeutic value and slope for horse-riding are discussed in relation to different diagnoses. | ||||
| Address | Bezirkskrankenhaus Haar b. Munchen | ||||
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| Language | German | Summary Language | Original Title | Die Wirksamkeit des therapeutischen Reitens bei der Behandlung chronisch schizophrener Patienten. Experimentelle Ergebnisse und klinische Erfahrungen | |
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| ISSN | 0028-2804 | ISBN | Medium | ||
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| Notes | [The effectiveness of therapeutic horseback-riding in the treatment of chronic schizophrenic patients. Experimental results and clinical experiences] | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 5067 | ||
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