Céline Lemercier

Mind wandering and driving: responsibility case-control study

Objective To assess the association between mind wandering (thinking unrelated to the task at hand) and the risk of being responsible for a motor vehicle crash. Design Responsibility case-control study. Setting Adult emergency department of a university hospital in France, April 2010 to August 2011. Participants 955 drivers injured in a motor vehicle crash. Main outcome measures Responsibility for the crash, mind wandering, external distraction, negative affect, alcohol use, psychotropic drug use, and sleep deprivation. Potential confounders were sociodemographic and crash characteristics. Results Intense mind wandering (highly disrupting/distracting content) was associated with responsibility for a traffic crash (17% (78 of 453 crashes in which the driver was thought to be responsible) v 9% (43 of 502 crashes in which the driver was not thought to be responsible); adjusted odds ratio 2.12, 95% confidence interval 1.37 to 3.28). Conclusions Mind wandering while driving, by decoupling attention from visual and auditory perceptions, can jeopardise the ability of the driver to incorporate information from the environment, thereby threatening safety on the roads.

Distraction and driving: results from a case-control responsibility study of traffic crash injured drivers interviewed at the emergency room

BACKGROUND Use of cellular phones has been shown to be associated with crashes but many external distractions remain to be studied. OBJECTIVE To assess the risk associated with diversion of attention due to unexpected events or secondary tasks at the wheel. DESIGN Responsibility case-control study. SETTING Adult emergency department of the Bordeaux University Hospital (France) from April 2010 to August 2011. PARTICIPANTS 955 injured drivers presenting as a result of motor vehicle crash. MAIN OUTCOME MEASURES The main outcome variable was responsibility for the crash. Exposures were external distraction, alcohol use, psychotropic medicine use, and sleep deprivation. Potential confounders were sociodemographic and crash characteristics. RESULTS Beyond classical risk factor found to be associated with responsibility, results showed that distracting events inside the vehicle (picking up an object), distraction due to driver activity (smoking) and distracting events occurring outside were associated with an increased probability of being at fault. These distraction-related factors accounted for 8% of injurious road crashes. LIMITATIONS Retrospective responsibility self-assessment. CONCLUSIONS Diverted attention may carry more risk than expected. Our results are supporting recent research efforts to detect periods of driving vulnerability related to inattention.

Sonification of in-vehicle interface reduces gaze movements under dual-task condition

In-car infotainment systems (ICIS) often degrade driving performances since they divert the drivers gaze from the driving scene. Sonification of hierarchical menus (such as those found in most ICIS) is examined in this paper as one possible solution to reduce gaze movements towards the visual display. In a dual-task experiment in the laboratory, 46 participants were requested to prioritize a primary task (a continuous target detection task) and to simultaneously navigate in a realistic mock-up of an ICIS, either sonified or not. Results indicated that sonification significantly increased the time spent looking at the primary task, and significantly decreased the number and the duration of gaze saccades towards the ICIS. In other words, the sonified ICIS could be used nearly exclusively by ear. On the other hand, the reaction times in the primary task were increased in both silent and sonified conditions. This study suggests that sonification of secondary tasks while driving could improve the drivers visual attention of the driving scene.

Incidental learning of incongruent items in a manual version of the Stroop task.

Two experiments refine the incidental learning hypothesis of incongruent items during color-naming. In Exp. 1, the size of the incongruent item set was manipulated in a manual Stroop task. In Version 4, four different incongruent items were presented; in Version 8, eight different incongruent items were presented; and in Version 12, 12 different incongruent items were presented. Analysis showed color-naming response time was roughly equivalent for neutral and incongruent items in Version 4. Conversely, the Stroop effect not only was manifest but also was equivalent in Versions 8 and 12. In Exp. 2, the role of the phonological loop in the Stroop effect was investigated using Version 4 of Exp. 1. The Experimental group repeated aloud the syllable “LA” during the Incongruent color-naming condition. Articulatory suppression resulted in a significant increase in Incongruent color-naming response time. Implications for the interpretation of Stroop data are discussed.

Knowing which day of the week it is: temporal structure and dynamics of memory.

The complementary role of static and dynamic information used when one needs to be located in time was studied. Static information refers to temporal knowledge about days of the week, and dynamic information reflects a sense of time, taking into account the present, the near past, and the future. Each day of an actual 7-day wk., 699 women and 620 men were asked to provide a “right” or “wrong” response to a statement such as “Today is T.,” where X was the name of one of the seven days of the week. Analysis suggested use of a structured temporal representation of the week: the weekend, a landmark, had an anchoring role. Also the dynamics of the content of working memory were indicated. The active “temporal window” participants hold in mind seems directed more towards the future than the past. Results are discussed within the more general context of time management.

Context-specific proportion congruent effects: Compound-cue contingency learning in disguise

Conflict between task-relevant and task-irrelevant stimulus information leads to impairment in response speed and accuracy. For instance, in the colour-word Stroop paradigm, participants respond slower and less accurately to the print colour of incongruent colour words (e.g., “red” printed in green) than to congruent colour words (e.g., “green” in green). Importantly, this congruency effect is diminished when the trials in an experiment are mostly incongruent, relative to mostly congruent, termed a proportion congruent effect. When distracting stimuli are mostly congruent in one context (e.g., location or font) but mostly incongruent in another context (e.g., another location or font), the congruency effect is still diminished in the mostly incongruent context, termed a context-specific proportion congruent (CSPC) effect. Both the standard proportion congruent and CSPC effects are typically interpreted in terms of conflict-driven attentional control, frequently termed conflict adaptation or conflict monitoring. However, in two experiments, we investigated contingency learning confounds in context-specific proportion congruent effects. In particular, two variants of a dissociation procedure are presented with the font variant of the CSPC procedure. In both, robust contingency learning effects were observed. No evidence for context-specific control was observed. In fact, results trended in the wrong direction. In all, the results suggest that CSPC effects may not be a useful way of studying attentional control.

Cognitive Characteristics of Strategic and Non-strategic Gamblers

Participation in strategic and non-strategic games is mostly explained in the literature by gender: men gamble on strategic games, while women gamble on non-strategic games. However, little is known about the underlying cognitive factors that could also distinguish strategic and non-strategic gamblers. We suggest that cognitive style and need for cognition also explain participation in gambling subtypes. From a dual-process perspective, cognitive style is the tendency to reject or accept the fast, automatic answer that comes immediately in response to a problem. Individuals that preferentially reject the automatic response use an analytic style, which suggest processing information in a slow way, with deep treatment. The intuitive style supposes a reliance on fast, automatic answers. The need for cognition provides a motivation to engage in effortful activities. One hundred and forty-nine gamblers (53 strategic and 96 non-strategic) answered the Cognitive Reflection Test, Need For Cognition Scale, and socio-demographic questions. A logistic regression was conducted to evaluate the influence of gender, cognitive style and need for cognition on participation in strategic and non-strategic games. Our results show that a model with both gender and cognitive variables is more accurate than a model with gender alone. Analytic (vs. intuitive) style, high (vs. low) need for cognition and being male (vs. female) are characteristics of strategic gamblers (vs. non-strategic gamblers). This study highlights the importance of considering the cognitive characteristics of strategic and non-strategic gamblers in order to develop preventive campaigns and treatments that fit the best profiles for gamblers.

Mood Self-Assessment in Children From the Age of 7

The evaluation of emotions is one of the main challenges facing theorists and applied psychology researchers. In children, in order to focus on subjective feelings, psychologists mainly use non-verbal scales that measure both the intensity and valence of the emotions felt. The use of these scales poses a main research questions: What is the children’s knowledge of the emotion presented? In order to properly assess the emotional state of a child, it is first necessary to measure the child’s understanding of the major characteristics of emotion. Secondly, it is important to assess the child’s ability to designate the primary emotion associated with a particular situation, and assess how these emotional situations alters their own assessment of their emotional state. This research aims to know if children from the age of seven to eleven can be emotionally induced and if this induction varies in the lifespan.

Promoting responsible gambling via prevention messages: insights from the evaluation of actual European messages

Abstract Prevention messages are short sentences supposed to broadcast preventive intentions. Three types of messages are noticeable: messages correcting erroneous beliefs, messages informing about the risks and messages promoting responsible gambling. While the results in the literature about messages promoting results are alerting, they are frequently used in European prevention campaigns. The present study relied on language and semantics models to evaluate the communicative and preventive values of 14 messages: 7 were actual European prevention messages and 7 messages were created for the study. Overall, 339 participants answered an online questionnaire in which they evaluated the communicative value of one of the messages and then ranked all the messages according to their preventive level. Results showed that messages informing about the risks and messages correcting erroneous beliefs have a higher level of communicative value than messages promoting responsible gambling. Indeed, the latter are judged as more ambiguous and as less preventive than the two other types of messages. As models of conversational pragmatics suggest that ambiguous messages convey at least two interpretations, the article discusses the possibility that individuals comprehend these messages as incentives to control their impulses (prevention) and incentives to control the game (promotion).