Assistive Social Robot: older people's perception and acceptance?

Speeches/Talks (2018)

Aging and Time Perception for Short and Long Durations: A Question of Attention?

in Timing & Time Perception (2017), 5(2), 149-167

This study examined the difference in the perception of time between young and older adults in a temporal bisection task with four different duration ranges from a few milliseconds (500 ms) to several ... [more ▼]

This study examined the difference in the perception of time between young and older adults in a temporal bisection task with four different duration ranges from a few milliseconds (500 ms) to several seconds (30 s). In addition, individual cognitive capacities (short-term memory, working memory, processing speed, attention) were assessed with different neuropsychological tests. The results showed a general effect of age on the variability of time judgment, indicating a lower sensitivity to time in the old than in the younger adults, regardless of the duration range tested. In addition, the results showed that the individual differences in time sensitivity were explained by attention capacities, which decline with aging. [less ▲]

Conscience du temps, sentiment de passage du temps: une approche métacognitive de la perception du temps

Doctoral thesis (2016)

Metacognition concerns both individuals' knowledge about their cognitive functioning and the processes that regulate them (Koriat, 2007). The study of the perception of time showed that many factors cause ... [more ▼]

Metacognition concerns both individuals' knowledge about their cognitive functioning and the processes that regulate them (Koriat, 2007). The study of the perception of time showed that many factors cause temporal distortions, including, for example, attention or feedback. The purpose of this work is thus to propose an integrative model of metacognition of time perception; i.e. to integrate data based on conventional research on the perception of time in a metacognitive model (Nelson and Narens 1990). Our first question was to verify the existence of knowledge about the perception of time, especially on the factors responsible for temporal distortions. The three experiments of our first study led us to create and validate the Metacognitive Questionnaire on Time (MQT). The latter consists of 24 items that highlights the existence of knowledge, more reliable for oneself (subscale Self, 12 items) than for others (subscale Others, 12 items), on two factors known to affect time perception: an Emotion Factor (4 items) and an Attention factor (8 items). Secondly, we studied the influence of metacognitive processes on temporal judgments. Thus, we are interested in the influence of metacognitive Control process on performances in two temporal tasks. Our hypothesis was that knowledge about time allowed regulating the temporal judgments. The results of our studies (Study 2 and 3, respectively composed of one and two experiments) confirmed the importance of the Control process on temporal judgments. Thus, mere awareness of the role of attention on perception of time causes a reduction of the attentional effect generally observed (Study 2). Moreover, explicit erroneous knowledge given to participants causes a reduction or even disappearance of automatic emotional effect of anger on the temporal judgments (Study 3). Finally, we have explored the link between Monitoring process and temporal judgments. Our fourth study demonstrated the ability of individuals to accurately estimate the accuracy of their temporal judgments under certain conditions. Indeed, it appears that individuals are sensitive to task difficulty and duration range. These two dimensions affect both temporal judgments and confidence level estimates. Overall, the results of this study emphasize the importance to take account of metacognitive processes in the study of the perception of time. [less ▲]

The conscious awareness of time distortions regulates the effect of emotion on the perception of time

in Consciousness and Cognition (2015), 38

abstract This study examined how the awareness of emotion-related time distortions modifies the effect of emotion on time perception. Before performing a temporal bisection task with stimulus durations ... [more ▼]

abstract This study examined how the awareness of emotion-related time distortions modifies the effect of emotion on time perception. Before performing a temporal bisection task with stimulus durations presented in the form of neutral or emotional facial expressions (angry, disgusted and ashamed faces), some of the participants read a scientific text providing either correct or incorrect information on the emotion–time relationship. Other partici- pants did not receive any information. The results showed that the declarative knowledge allowed the participants to regulate (decrease) the intensity of emotional effects on the perception of time, but did not trigger temporal effects when the emotional stimuli did not automatically induce emotional reactions that distorted time. [less ▲]

Effect of task difficulty and no-forced responses on temporal performance and confidence levels

Poster (2014, September)

Time, Emotion and the Embodiment of Timing

in Timing & Time Perception (2013), 1(1), 99-126

The past few decades have seen an explosion in studies exploring the effects of emotion on time judgments. The aim of this review is to describe the results of these studies and to look at how they try to ... [more ▼]

The past few decades have seen an explosion in studies exploring the effects of emotion on time judgments. The aim of this review is to describe the results of these studies and to look at how they try to explain the time distortions produced by emotion. We begin by examining the findings on time judgments in affective disorders, which allow us to make a clear distinction between the feelings of time distortion that originate from introspection onto subjective personal experience, and the effects of emotion on the basic mechanisms involved in time perception. We then report the results of behavioral studies that have tested the effects of emotions on time perceptions and the temporal processing of different emotional stimuli (e.g. facial expressions, affective pictures or sounds). Finally, we describe our own studies of the embodiment of timing.Overall, the different results on time and emotion suggest that temporal distortions are an indicator of how our brain and body adapt to the dynamic structure of our environment. [less ▲]

The impact of knowledge on the effect of emotion on time perception

Scientific Conference (2012, June)

Safety and feeling of safety in the context of older people ageing at home

in Ageing International (n.d.)