Simon Grondin

Simon Grondin
Laval University | ULAVAL · School of Psychology

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189
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Publications

Publications (189)
Article
The main objective of this study was to determine if the estimation of time could be used to reveal an implicit political bias. The study also aimed at determining if a political bias is related to a specific temporal perspective or to other personality factors. The main demonstration is based on a bisection temporal task where the participants wer...
Preprint
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The Covid-19 pandemic and associated lockdowns triggered worldwide changes in the daily routines of human experience. The Blursday database provides measures of subjective time and related processes from more than 2,800 participants (over 9 countries) tested on 14 questionnaires and 15 behavioral tasks during the Covid-19 pandemic. The easy-to-proc...
Article
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Objective: The aim of the current study was to improve the understanding of emotions evoked by food pictures in women with an eating disorder (ED), by distinguishing anorexia nervosa (AN) and bulimia nervosa (BN) diagnoses, while taking into account the caloric content of food and the influence of participants’ nutritional knowledge. Methods: Thirt...
Article
Full-text available
Many comparisons involve sequentially presented stimuli, as perforce the case in comparisons of temporal intervals. Interactions of such stimuli are as inevitable as the spatial interactions that yield color and brightness contrast. A memory-trace theory of perception (TToP) is developed and applied to time perception. Duration is estimated based o...
Article
Individuals who have sustained a traumatic brain injury (TBI) can suffer from episodic memory impairments. Until now, the neural correlates underlying episodic retrieval in individuals with TBI remained scarce, particularly in older adults. We aimed to fill this gap by recording event-related potentials during an old/new episodic recognition task i...
Article
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Objective: The aim of the current study was to improve the understanding of emotions evoked by food pictures in women with an eating disorder (ED), by distinguishing anorexia nervosa (AN) and bulimia nervosa (BN) diagnoses, while taking into account the caloric content of food and the influence of participants' nutritional knowledge. Methods: Thirt...
Article
Full-text available
Time perception can be distorted by emotional stimuli. The present study aims to investigate the effect of disgust on time perception in young adults. Here we report two experiments in which a time bisection task was used with intervals lasting 400 ms (short standard) to 1600 ms (long standard). In Experiment 1, temporal intervals were marked by ne...
Preprint
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The COVID-19 outbreak and governmental measures to keep the population safe had a great impact on many aspects of society, including well-being. Using data from N=1281 participants from six countries (Argentina, France, Greece, Italy, Japan, and Turkey), we first explored differences in anxiety, depression (measured with Hospital Anxiety and Depres...
Preprint
Full-text available
Many comparisons involve sequentially presented stimuli, as perforce the case in comparisons of temporal intervals. Interactions of such stimuli are as inevitable as the spatial interactions that yield color and brightness contrast. A memory-trace theory of perception (TToP) is developed and applied to time perception. Duration is estimated based o...
Article
Episodic memory and attention impairments are frequently observed following a traumatic brain injury (TBI). Older adults are more affected than young adults after a TBI, partly because of the age-related neural and memory changes. Neural mechanisms underlying episodic memory deficits in older adults with chronic TBI remain to be investigated. The c...
Article
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The term "relative age effect" (RAE) is used to describe a bias in which participation in sports (and other fields) is higher among people who were born at the beginning of the relevant selection period than would be expected from the distribution of births. In sports, RAEs may affect the psychological experience of players as well as their perform...
Article
Evidence suggests that psychopathic individuals display difficulties to adapt their behavior in accordance with the demands of the environment and show altered performance monitoring. Studies investigating the error-related negativity (ERN) and the error-positivity (Pe) as electrophysiological markers of error monitoring reported contradictory resu...
Article
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Adults often report the impression that time seems to pass more and more quickly as they get older. The purpose of this study is to identify how individual characteristics relate to this impression of acceleration. To do so, 894 participants aged 15 to 97 completed a questionnaire that surveyed sociodemographic characteristics, impulsivity, anxiety...
Article
Although several studies have reported relaxing and stimulating effects of odors on physiology and behavior, little is known about their underlying mechanisms. It has been proposed that participant expectancy could explain these activation effects. Since emotional stimuli are known to modulate time perception, here we used the temporal bisection ta...
Article
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Key decision-makers among experts in a given field can sometimes be identified based on their role and responsibilities. The aim of the study is to compare perceptual-cognitive skills of experts with decisional responsibilities (setters in volleyball) with that of other volleyball experts. Eighty-two participants (26 setters, 36 other players and 2...
Article
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This article addresses the feeling of strangeness about the perception of time that many people with ordinary lifestyles experienced during the quarantine imposed to fight the presence of COVID-19. It describes different aspects of psychological time affected by the interruption of a normal routine and suggests some cognitive mechanisms, attention,...
Preprint
Background: Evidence suggests that individuals with psychopathy display difficulties to adapt their behavior in accordance with the demands of the environment and show altered performance monitoring. However, studies investigating electrophysiological markers of error monitoring (e.g., the error-related negativity (ERN) and the error-positivity (Pe...
Preprint
Background: Evidence suggests that individuals with psychopathy display difficulties to adapt their behavior in accordance with the demands of the environment and show altered performance monitoring. However, studies investigating electrophysiological markers of error monitoring (e.g., the error-related negativity (ERN) and the error-positivity (Pe...
Article
Full-text available
This study assesses factors influencing the capacity to maintain a steady rhythm during explicit counting activities. There are three counting paces (count every 800, 1200, or 1600 ms) and three experimental conditions (count silently, aloud and aloud in the presence of someone). The study also assesses the effect of a speech disorder, namely stutt...
Article
The choice of a theoretical orientation often starts early during studies in psychology, and may guide the entire work of clinical psychologists. The aim of this study is to unveil associations between the temporal personality of university students in psychology, their personality traits and their preferences for each of the four main theoretical...
Article
The duration of the representation of 1 s was estimated with two methods: (a) the adjustments of the duration of a sound and (b) the production of 10 s with counts from 1 to 11. The estimations were not close to 1 s and varied considerably. Assuming that the representation of 1 s is close to 1000 ms could well be misleading.
Article
In this 3-experiment study, the Weber fractions in the 300-ms and 900-ms duration ranges are obtained with 9 types of empty intervals resulting from the combinations of three types of signals for marking the beginning and end of the signals: auditory (A), visual (V), or tactile (T). There were three types of intramodal intervals (AA, TT, and VV) an...
Article
Time-based prospective memory (TB-PM) is the ability to remember to perform an action at a specific moment in the future. Accurate TB-PM performance requires several cognitive processes that are known to decline in normal ageing. This study aimed to examine associations between TB-PM performance and executive functions and time perception in younge...
Article
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Despite its abundant literature, the timing research field does not offer any comparison of prospective and retrospective time estimates emerging from a within-subjects design. Likewise, the relationships between these estimates and individual factors, within such a design, have never been investigated. The present study addresses these issues. Nin...
Article
The present review includes transcranial magnetic and transcranial electric stimulation studies on time perception and shows that the neural processing of time requires the activity of wide range-distributed brain networks. Moreover, a critical discussion regarding non-invasive brain stimulation in the study of time processing is included to give t...
Article
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The understanding of the mechanisms underlying the representation of temporal intervals in the range of milliseconds/seconds remains a complex issue. Different brain areas have been identified as critical in temporal processing. The activation of specific areas is depending on temporal range involved in the tasks and on the modalities used for mark...
Article
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The present study used the presentation of food pictures and judgements about their duration to assess the emotions elicited by food in women suffering from an eating disorder (ED). Twenty-three women diagnosed with an ED, namely anorexia (AN) or bulimia nervosa (BN), and 23 healthy controls (HC) completed a temporal bisection task and a duration d...
Article
Full-text available
The present study investigated how the symbolic meaning of speed affects time perception in children and adults. We employed a time reproduction task in which participants were asked to reproduce temporal intervals previously presented. In Experiment 1, 45 primary school children and 22 university students performed a time reproduction task with ca...
Article
When a deviant stimulus is presented within a stream of homogeneous stimuli, its duration tends to be overestimated. Two experiments investigated the effects of oddball serial position and pitch deviancy on perceived duration. In Experiment 1, the oddball method was used, in which an oddball stimulus is embedded in a series of standard stimuli and...
Chapter
In this chapter, we propose to review studies on the capability of making explicit judgments about the duration of auditory time intervals. After a brief look at the main methods used to study time perception, we then focus on factors affecting sensitivity to time (e. g., discrimination levels) including repetition of intervals and the duration ran...
Book
Full-text available
Ce livre est une invitation à voyager dans l'univers du temps psychologique. Il vise à faire comprendre aux lecteurs à quel point nous avons un esprit temporel, à quel point nous devons composer constamment, sous une forme ou une autre, avec cette obscure créature qu'est le temps. Le lecteur trouvera dans cet ouvrage quelques réponses à ses questio...
Article
The aim of the present study was to investigate the influence of the emotional content of words marking brief intervals on the perceived duration of these intervals. Three independent variables were of interest: the gender of the person pronouncing the words, the gender of participants, and the valence (positive or negative) of the words in conjunc...
Article
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This article provides an overview of some contemporary research avenues in the field of timing and time perception. After a brief description of different categories of temporal experiences, the article describes how research on psychological time falls within a psychophysical perspective. Next, some factors changing sensitivity to time or perceive...
Article
The dynamics of noxious sensation shapes pain perception, yet the memory of the temporal dimension of pain remains almost completely unexplored. Here, brain activity during the memory of pain duration was contrasted with that associated with the memory of pain intensity using functional magnetic resonance imaging (fMRI) and a delayed-reproduction t...
Article
Introduction: Parkinson's disease (PD) is a movement disorder caused by deterioration of the dopaminergic system. Previous studies have demonstrated temporal as well as emotional facial recognition impairment in PD patients. Moreover, it has been demonstrated that emotional facial expressions alter temporal judgments. In the present study, we inve...
Book
Full-text available
Les thèmes abordés dans ce troisième volume de « La psychologie au quotidien » sont différents de ceux abordés dans les deux premiers. Cette fois, des réponses sont apportées aux questions suivantes : Peut-on vivre une vie normale quand on souffre de schizophrénie ? Comment le milieu familial peut-il contribuer à l’apprentissage de la lecture ? À q...
Article
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This article aims at examining the relationship between temporal skills and reading. According to Tallal, dyslexia may be linked to a global deficit in temporal processing, which would be detrimental for discrimination of phonemes, and thus impair reading acquisition. The temporal deficit hypothesis is not consensual, and the exact nature of the te...
Book
Full-text available
La LNH fête ses 100 ans en 2017 et ce livre s’avère une ressource indispensable pour qui veut connaître les ficelles de sa fondation et de son évolution, de même que ses principaux acteurs. Le livre répertorie aussi chaque série de la fameuse rivalité Canadien-Boston et offre une synthèse minutieuse des principaux échanges dans l’histoire de la lig...
Article
In 1933, Hoagland proposed that temporal processing was based on an internal clock controlled by a temperature-dependent chemical pacemaker. Several studies have tested this hypothesis, mainly using intervals above 1 s, and the global picture about the impact of temperature remains unclear. The present study aims to investigate the relationship bet...
Article
Aim: Many studies showed that visual stimuli are frequently experienced as shorter than equivalent auditory stimuli. These findings suggest that timing is distributed across many brain areas and that "different clocks" might be involved in temporal processing. The aim of this study is to investigate, with the application of tDCS over V1 and A1, th...
Article
Full-text available
We investigated how perceived duration of empty time intervals would be modulated by the length of sounds marking those intervals. Three sounds were successively presented in Experiment 1. Each sound was short (S) or long (L), and the temporal position of the middle sound’s onset was varied. The lengthening of each sound resulted in delayed percept...
Article
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The kappa effect is a spatiotemporal illusion where duration is overestimated with the increase of space. This effect is typically demonstrated with three successive stimuli marking two neighboring empty time intervals, and the classical imputed velocity model, in principle, does not help to predict any spatial effects when only two stimuli, markin...
Article
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The presence of discrete events during an interval to be estimated generally causes a dilation of perceived duration (event-filling effect). Here, we investigated this phenomenon in the thermal modality using multi-seconds (19 s) innocuous cool stimuli that were either constant (continuous interval) or fluctuating to create three discrete sensory e...
Article
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Previous studies have shown the presence of an interference effect on temporal perception when participants are required to simultaneously execute a nontemporal task. Such interference likely has an attentional source. In the present work, a temporal discrimination task was performed alone or together with a self-paced finger-tapping task used as c...
Article
Several studies reported temporal dysfunctions in anxious and depressed patients. In particular, compared to controls, anxious patients report that time is passing fast whereas depressed patients report that time passes slowly. However, in some studies, no differences between patients and controls are reported. Direct comparison between studies may...
Book
This book defines the terminology used in the fields of sensation and perception and describes the biological and physical bases required for understanding sensory experiences. It offers more specifically an introduction to the study of psychophysics, auditory perception, visual perception, and attention, and discusses the basic concepts and mechan...
Book
Full-text available
Pourquoi une tache sombre sur un mur blanc paraît-elle lumineuse au milieu d'un paysage? Pour quelle raison croirons-nous percevoir un visage au milieu d'une peinture abstraite? Pourquoi un artiste connu nous interpelle-t-il davantage qu'un artiste inconnu? Comment se fait-il que l'un recherche des oeuvres d'art provocantes alors que l'autre préfèr...
Article
Abstract Adequate temporal abilities are crucial for adaptive behavior. In time processing, variations in the rate of pulses’ emission by the pacemaker are often reported to be an important cause of temporal errors. These variations are often associated with physiological changes, and recently it has also been proposed that physiological changes ma...
Article
Objective: Previous studies have demonstrated that emotional facial expressions alter temporal judgments. Moreover, while some studies conducted with Parkinson's Disease (PD) patients suggest dysfunction in the recognition of emotional facial expression, others have shown a dysfunction in time perception. In the present study, we investigate the ma...
Article
Full-text available
It has been shown that prior experience with a task improves temporal prediction, even when the amount of prior experience with the task is often limited. The present study targeted the role of extensive training on temporal prediction. Expert and intermediate runners had to predict the time of a 5 km running competition. Furthermore, after the rac...
Article
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One factor influencing the perceived duration of a brief interval is the length of the period preceding it, namely the foreperiod (FP). When multiple FPs are varied randomly within a testing session, longer FPs result in longer perceived duration. The purpose of this study was to identify what characteristics modulate this effect. In a task where p...
Article
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This Research Topic is about time-experience broadly construed, as it manifests at perceptual and conceptual time-scales (milliseconds-to-seconds vs. longer times, respectively). Authors representing a broad spectrum of psychology and neuroscience have contributed, introducing novel theories, empirical findings, and methodological innovations. In t...
Article
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Participants are aware that they have to perform a temporal task in a prospective timing condition but not in a retrospective timing condition. In the present study, a direct comparison of temporal estimates under each paradigm is proposed via a strategy where each participant is restricted to only 1 response. Participants were assigned to either a...
Book
Full-text available
Les thèmes abordés dans ce deuxième volume de « La psychologie au quotidien » sont différents de ceux abordés dans le premier. Cette fois-ci, des réponses sont apportées aux questions suivantes : Peut-on vraiment avoir du contrôle sur son poids ? Peut-on guérir d’un choc post-traumatique ? Qu’est-ce qu’une personnalité normale et une personnalité p...
Article
The present study investigates how the symbolic meaning of the stimuli presented for marking time intervals affects perceived duration. Participantswere engaged in a time bisection task in which they were first trained with two standard durations, 400 ms and 1600 ms, and then asked to judge if the following temporal intervals were closer to the sho...
Article
Full-text available
The aim of the present study was to investigate sex-related variations in the perception of the duration of emotional stimuli (human faces). Twenty male and 20 female participants estimated the duration of angry, ashamed and neutral faces marking 0.4 to 1.6 s intervals. Female faces were used in one session, and male faces in the other. Compared to...
Article
Approaching sensation scientifically is relatively straightforward. There are physical attributes for stimulating the central nervous system, and there are specific receptors for each sense for translating the physical signals into codes that brain will recognize. When studying time though, it is far from obvious that there are any specific recepto...
Article
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Some data in the time perception literature have indicated that Weber's law for time does not hold: The Weber fraction gets higher with longer intervals. It is posited that this increase may reflect a fundamental information-processing limitation. If that is true, counting at a pace at which the intervals between counts remain within this capacity...
Article
The aim of this study was to determine if the passage of time changes the memory of the duration of joyful or sad events. Participants were asked to look at a series of brief videos lasting 15 minutes and to estimate retrospectively and verbally (with chronometric units) the duration of this 15-minute period. There were two independent variables: t...
Article
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In the present study, a time discrimination task was used to investigate the effect of different contexts for intervals varying from 400 to 1600 ms. A potential time-space interaction was controlled, and participants used both manual responses (Experiments 1 and 2) and vocal responses (Experiment 3). Three ranges of durations were employed (short,...
Article
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A critical issue in the field of time perception is whether or not explicit judgments about time are processed by some internal clock mechanism. A subsequent issue is whether or not this clock, if any, is central (i.e., is the same for a large range of durations, for whatever way of marking the intervals to be processed). There are several ways of...
Article
Full-text available
The aim of this study was to compare the effect on interval discrimination of the presentation of disgusting mutilation images and the presentation of faces expressing disgust. In Experiments 1 and 2, participants had to say whether the second of two images was presented for a shorter or a longer duration than the first (intervals = 400 ms vs. 482...