Language’s intentional nature has been highlighted as a crucial feature distinguishing it from other communication systems. Specifically, language is often thought to depend on highly structured intentional action and mutual mindreading by a communicator and recipient. Whilst similar abilities in animals can shed light on the evolution of intentionality, they remain challenging to detect unambiguously. We revisit animal intentional communication and suggest that progress in identifying analogous capacities has been complicated by (i) the assumption that intentional (that is, voluntary) production (...) of communicative acts requires mental-state attribution, and (ii) variation in approaches investigating communication across sensory modalities. To move forward, we argue that a framework fusing research across modalities and species is required. We structure intentional communication into a series of requirements, each of which can be operationalised, investigated empirically, and must be met for purposive, intentionally communicative acts to be demonstrated. Our unified approach helps elucidate the distribution of animal intentional communication and subsequently serves to clarify what is meant by attributions of intentional communication in animals and humans. (shrink)

It is essential for social robots to fit in the human society. In order to facilitate this process we propose to use the family dog’s social behaviour shown towards humans as an inspiration. In this study we explored dogs’ low level social monitoring in dog-human interactions and extracted individually consistent and context dependent behaviours in simple everyday social scenarios. We found that proximity seeking and tail wagging were most individually distinctive in dogs, while activity, orientation towards the owner, and exploration (...) were dependent on the context and/or the activity of the owner. The functional analogues of these dog behaviours can be implemented in social robots of different embodiments in order to make them acceptable and more believable for humans. Keywords: dog-owner interaction; social robotics; low-level social monitoring; greeting behaviour; individually distinctive behaviours. (shrink)

Meeting humans is an everyday experience for most companion dogs, and their behavior in these situations and its genetic background is of major interest. Previous research in our laboratory reported that in German shepherd dogs the lack of G allele, and in Border collies the lack of A allele, of the oxytocin receptor gene (OXTR) 19208A/G single nucleotide polymorphism (SNP) was linked to increased friendliness, which suggests that although broad traits are affected by genetic variability, the specific links between alleles (...) and behavioural variables might be breed-specific. In the current study, we found that Siberian huskies with the A allele approached a friendly unfamiliar woman less frequently in a greeting test, which indicates that certain polymorphisms are related to human directed behaviour, but that the relationship patterns between polymorphisms and behavioural phenotypes differ between populations. This finding was further supported by our next investigation. According to primate studies, endogenous opioid peptide (e.g. endorphins) receptor genes have also been implicated in social relationships. Therefore, we examined the rs21912990 of the OPRM1 gene. Firstly, we found that the allele frequencies of Siberian huskies and gray wolves were similar, but differed from that of Border collies and German shepherd dogs, which might reflect their genetic relationship. Secondly, we detected significant associations between the OPRM1 SNP and greeting behaviour among German shepherd dogs and a trend in Border collies, but we could not detect an association in Siberian huskies. Although our results with OXTR and OPRM1 gene variants should be regarded as preliminary due to the relatively low sample size, they suggest that (1) OXTR and OPRM1 gene variants in dogs affect human-directed social behaviour and (2) their effects differ between breeds. (shrink)

It is essential for social robots to fit in the human society. In order to facilitate this process we propose to use the family dog’s social behaviour shown towards humans as an inspiration. In this study we explored dogs’ low level social monitoring in dog-human interactions and extracted individually consistent and context dependent behaviours in simple everyday social scenarios. We found that proximity seeking and tail wagging were most individually distinctive in dogs, while activity, orientation towards the owner, and exploration (...) were dependent on the context and/or the activity of the owner. The functional analogues of these dog behaviours can be implemented in social robots of different embodiments in order to make them acceptable and more believable for humans. Keywords: dog-owner interaction; social robotics; low-level social monitoring; greeting behaviour; individually distinctive behaviours. (shrink)

Excessive dog barking is among the leading sources of noise pollution world-wide; however, the reasons for the annoyance of barking to people remained uninvestigated. Our questions were: is the annoyance rating affected by the acoustic parameters of barks; does the attributed inner state of the dog and the nuisance caused by its barks correlate; does the gender and country of origin affect the subjects’ sensitivity to barking. Participants from Hungary (N = 100) and Brazil (N = 60) were tested with (...) sets of 27 artificial bark sequences. Subjects rated each bark according to the inner state of the dog and the annoyance caused by the particular bark. Subjects from both countries found high-pitched barks the most annoying: however, harsh, fast-pulsing, low-pitched barks were also unpleasant. Men found high-pitched barks more annoying than the women did. Annoyance ratings showed positive correlation with assumed negative inner states of the dog, positive emotional ratings showed negative correlation with the annoyance level. This is the first indication that acoustic features that were selected for effective vocal signalling may be annoying for human listeners. Among the explanations for this effect the role of affective communication and similar bioacoustics of particular animal vocalizations and baby cries are discussed. (shrink)

We describe the relationships between dog owners' personality attributes (assessed via questionnaire), their behaviours and the dog's behaviours observed during brief dog-owner and dog-stranger interactions (N = 78). Interactions comprised the owner commanding the dog to sit, and the stranger showing a ball to the restrained dog and then hiding it. Owners scoring higher on neuroticism and openness used more commands (gestural and verbal) when asking the dog to sit, and the dogs of owners higher on neuroticism obeyed with a (...) longer latency and spent more time looking at the stranger. More extraverted owners praised their dog more, and it took longer for their dogs to look at the stranger but they spent more time looking at the stranger, whereas dogs of more agreeable owners spent more time looking at the ball. Based on these results we conclude that some aspects of owners' personality appear to be tied to their dog's attentional concerns. Keywords: dog-human interaction; personality; multivariate statistical methods. (shrink)

We describe the relationships between dog owners’ personality attributes, their behaviours and the dog’s behaviours observed during brief dog-owner and dog-stranger interactions. Interactions comprised the owner commanding the dog to sit, and the stranger showing a ball to the restrained dog and then hiding it. Owners scoring higher on neuroticism and openness used more commands when asking the dog to sit, and the dogs of owners higher on neuroticism obeyed with a longer latency and spent more time looking at the (...) stranger. More extraverted owners praised their dog more, and it took longer for their dogs to look at the stranger but they spent more time looking at the stranger, whereas dogs of more agreeable owners spent more time looking at the ball. Based on these results we conclude that some aspects of owners’ personality appear to be tied to their dog’s attentional concerns. Keywords: dog-human interaction; personality; multivariate statistical methods. (shrink)

I will argue that we cannot understand imitation unless we know more about its function. By comparing the two examples presented by Byrne & Russon I show how the imitative behaviour of orangutans can be interpreted as a homologue of human imitation during play. In contrast, the lack of data leave the role of imitation in gorillas doubtful.

In a questionnaire study we surveyed the owners of 113 companion dogs. Owners had to mark on a four-grade scale how long their dog remembered particular memory items (persons, other animals, events, objects). Additionally we collected descriptive data on the demographical characteristics of the dog and the keeping conditions.A principal component analysis on the memory items resulted in five components. From these, two were connected to people (`Family' and `Intruders'), three other components contained individual items of memory of objects and (...) events (`Going out', Playing' and `Doing something'). Analyses of variance revealed that the dog-owner relationship, the keeping conditions, age and breed of the dog affect the dogs' memory as described by the owner. The amount of time spent together or the education of the owner had no or minimal effect on these components.Our study showed that owners form stable opinions about their dogs' episodic memory capacity. Nevertheless, the results can be biased by such factors that affect either the owners' opinions about their dog-companions, or the dogs' access to particular stimuli, which can modify the formation of memory traces. In the future, these results can serve as a starting point for empirical testing of family dogs' memory. Keywords: dogs; dog owners; memory; questionnaire. (shrink)

In a questionnaire study we surveyed the owners of 113 companion dogs. Owners had to mark on a four-grade scale how long their dog remembered particular memory items. Additionally we collected descriptive data on the demographical characteristics of the dog and the keeping conditions.A principal component analysis on the memory items resulted in five components. From these, two were connected to people, three other components contained individual items of memory of objects and events. Analyses of variance revealed that the dog-owner (...) relationship, the keeping conditions, age and breed of the dog affect the dogs’ memory as described by the owner. The amount of time spent together or the education of the owner had no or minimal effect on these components.Our study showed that owners form stable opinions about their dogs’ episodic memory capacity. Nevertheless, the results can be biased by such factors that affect either the owners’ opinions about their dog-companions, or the dogs’ access to particular stimuli, which can modify the formation of memory traces. In the future, these results can serve as a starting point for empirical testing of family dogs’ memory. Keywords: dogs; dog owners; memory; questionnaire. (shrink)

In a questionnaire study we surveyed the owners of 113 companion dogs. Owners had to mark on a four-grade scale how long their dog remembered particular memory items. Additionally we collected descriptive data on the demographical characteristics of the dog and the keeping conditions.A principal component analysis on the memory items resulted in five components. From these, two were connected to people, three other components contained individual items of memory of objects and events. Analyses of variance revealed that the dog-owner (...) relationship, the keeping conditions, age and breed of the dog affect the dogs’ memory as described by the owner. The amount of time spent together or the education of the owner had no or minimal effect on these components.Our study showed that owners form stable opinions about their dogs’ episodic memory capacity. Nevertheless, the results can be biased by such factors that affect either the owners’ opinions about their dog-companions, or the dogs’ access to particular stimuli, which can modify the formation of memory traces. In the future, these results can serve as a starting point for empirical testing of family dogs’ memory. Keywords: dogs; dog owners; memory; questionnaire. (shrink)