What makes a human voice agreeable is a matter of scientific discussion. Whereas prosody was shown to play a role regarding “male-female” attraction, the impact of frequency modulations in “non-sexual”, notably commercial, contexts has attracted little attention. Another point unaddressed in the literature is auditory sensitivity to short-term frequency modulations as current studies focus more on sentence. Thirty French female operators were recorded over the phone. All “bonjour” greeting words were classified in terms of frequency modulation linearity and orientation at (...) the syllable and word levels. Then, the different voices were played back to students and seniors who had to rate each voice according to their degree of agreeableness. Listeners preferred non-monotonous voices. Differences between age-classes were greater than between sex-classes. Results suggest that short-term frequency changes are important for auditory evaluation of voice agreeableness. This study opens new research perspectives concerning the importance of prosody during consumer-seller interactions. (shrink)

Autistic disorders are characterized by deficits in social interactions and communication, strong aversion or non-response to social stimuli. However, these children are often reported to develop strong bonds with companion animals. We hypothesized that children with autism would present different behavioural profiles when encountering an unfamiliar animal in aStrange Animal Situationclose-to-life test. Twenty seven CAD were compared to 59 children with typical development. Our results. revealed similarities in the behaviour of both groups of children as well as patterns specific to (...) the CAD. Different profiles emerged depending on everyday living conditions. This study constitutes, to our knowledge, the first clear description of how children with autism react when encountering an unfamiliar animal and one of the first direct comparisons between CAD and CTD using a naturalistic but standardized setting. Keywords: autism; animal; profile; interaction; ethology. (shrink)

Autistic disorders are characterized by deficits in social interactions and communication, strong aversion or non-response to social stimuli. However, these children are often reported to develop strong bonds with companion animals. We hypothesized that children with autism would present different behavioural profiles when encountering an unfamiliar animal in a Strange Animal Situation close-to-life test. Twenty seven CAD were compared to 59 children with typical development. Our results. revealed similarities in the behaviour of both groups of children as well as patterns (...) specific to the CAD. Different profiles emerged depending on everyday living conditions. This study constitutes, to our knowledge, the first clear description of how children with autism react when encountering an unfamiliar animal and one of the first direct comparisons between CAD and CTD using a naturalistic but standardized setting. Keywords: autism; animal; profile; interaction; ethology. (shrink)

Human emotions guide verbal and non-verbal behaviour during social encounters. During public performances, performers’ emotions can be affected directly by an audience’s attitude. The valence of the emotional state (positive or negative) of a broad range of animal species is known to be associated with a body and visual orientation laterality bias. Here, we evaluated the influence of an audience’s attitude on professional actors’ head orientation and gaze direction during two theatrical performances with controlled observers’ reactions (Hostile vs Friendly audience). (...) First, our speech fluency analysis confirmed that an audience’s attitude influenced actors’ emotions. Second, we found that, whereas actors oriented more their head to the left (i.e. Right Hemisphere Bias) when the audience was hostile, they gazed more straight ahead at Friendly spectators. These results are in accordance with the Valence-Specific Hypothesis that proposes that processing stimuli with negative valences involves the right hemisphere (i.e. left eye) more than the left hemisphere. (shrink)

Human emotions guide verbal and non-verbal behaviour during social encounters. During public performances, performers’ emotions can be affected directly by an audience’s attitude. The valence of the emotional state (positive or negative) of a broad range of animal species is known to be associated with a body and visual orientation laterality bias. Here, we evaluated the influence of an audience’s attitude on professional actors’ head orientation and gaze direction during two theatrical performances with controlled observers’ reactions (Hostile vs Friendly audience). (...) First, our speech fluency analysis confirmed that an audience’s attitude influenced actors’ emotions. Second, we found that, whereas actors oriented more their head to the left (i.e. Right Hemisphere Bias) when the audience was hostile, they gazed more straight ahead at Friendly spectators. These results are in accordance with the Valence-Specific Hypothesis that proposes that processing stimuli with negative valences involves the right hemisphere (i.e. left eye) more than the left hemisphere. (shrink)