Children's and adolescents' perception of the authenticity of smiles

Recently, Thibault and colleagues described the Duchenne marker as a cultural dialect for the perception of smile authenticity. The current study had the goal to follow up on this finding and to investigate the cues that French Canadian children use to evaluate the authenticity of smiles from members of three ethnic groups. The authenticity of six smiles differing in intensity and presence of orbicularis oculi (Duchenne marker) was rated by 1206 children from 4 to 17 years of age. No differences were found as a function of encoder group. All children perceived medium Duchenne smiles as more authentic than equally intense medium non-Duchenne smiles. Furthermore, results suggest a decrease in the reliance on intensity across the age span. Younger children use the intensity marker along the whole continuum to infer authenticity. In contrast, older children (14- to 17-year-olds) rated all smiles that did not contain the Duchenne marker as roughly equally low in authenticity.     

How does horizontal and vertical navigation influence spatial memory of multifloored environments?

Although a number of studies have been devoted to 2-D navigation, relatively little is known about how the brain encodes and recalls navigation in complex multifloored environments. Previous studies have proposed that humans preferentially memorize buildings by a set of horizontal 2-D representations. Yet this might stem from the fact that environments were also explored by floors. Here, we have investigated the effect of spatial learning on memory of a virtual multifloored building. Two groups of 28 participants watched a computer movie that showed either a route along floors one at a time or travel between floors by simulated lifts, consisting in both cases of a 2-D trajectory in the vertical plane. To test recognition, the participants viewed a camera movement that either replicated a segment of the learning route (familiar segment) or did not (novel segment—i.e., shortcuts). Overall, floor recognition was not reliably superior to column recognition, but learning along a floor route produced a better spatial memory performance than did learning along a column route. Moreover, the participants processed familiar segments more accurately than novel ones, not only after floor learning, but crucially, also after column learning, suggesting a key role of the observation mode on the exploitation of spatial memory.     

Persistent coordination patterns in a complex task after 10 years delay: Subtitle: How validate the old saying “Once you have learned how to ride a bicycle,you never forget!”

Motor learning studies have for a long time focused on performance variables (in terms of speed or accuracy) in assessing learning, transfer and retention of motor skills. We argue, however, that learning essentially resides in changes in coordination variables (in terms of qualitative organization of behavior) and that relevant tests for assessing the effectiveness of learning and retention should consider these variables. The aim of this experiment was to test the retention of a complex motor skill, after a long-term delay. Ten years ago, five participants were involved in an experiment during which they practiced for 39 sessions of ten 1-min trials on a ski-simulator. All participants volunteered for a retention test, ten years after, for one session of ten 1-min trials. Analyses focused on the oscillations of the platform of the simulator. Performance was assessed in terms of amplitude and frequency. Coordination was accounted for by an analysis of dynamical properties of the motion of the platform, and especially the nature of the damping function that was exploited for sustaining the limit cycle dynamics. Results showed a significant decrement in performance variables. In contrast, all participants adopted from the first trial onwards the coordination mode they learned 10 years ago. These results confirm the strong persistence of coordination modes, once acquired and stabilized in the behavioral repertoire. They also support the importance of coordination variables for a valid assessment of learning and retention.     

How the Learning Path and the Very Structure of a Multifloored Environment Influence Human Spatial Memory

Few studies have explored how humans memorize landmarks in complex multifloored buildings. They have observed that participants memorize an environment either by floors or by vertical columns, influenced by the learning path. However, the influence of the building’s actual structure is not yet known. In order to investigate this influence, we conducted an experiment using an object-in-place protocol in a cylindrical building to contrast with previous experiments which used rectilinear environments. Two groups of 15 participants were taken on a tour with a first person perspective through a virtual cylindrical three-floored building. They followed either a route discovering floors one at a time, or a route discovering columns (by simulated lifts across floors). They then underwent a series of trials, in which they viewed a camera movement reproducing either a segment of the learning path (familiar trials), or performing a shortcut relative to the learning trajectory (novel trials). We observed that regardless of the learning path, participants better memorized the building by floors, and only participants who had discovered the building by columns also memorized it by columns. This expands on previous results obtained in a rectilinear building, where the learning path favoured the memory of its horizontal and vertical layout. Taken together, these results suggest that both learning mode and an environment’s structure influence the spatial memory of complex multifloored buildings.     

Procedural Fairness, Managers' Self-Esteem, and Managerial Behaviors Following a Layoff

The present research examined the predictors and consequences associated with managers' reactions to job layoffs. Whereas previous research suggests that procedural unfairness lowers self-esteem, we hypothesized that, in a downsizing context, the relationship between procedural unfairness and lower self-esteem would be more pronounced among managers than nonmanagers. The results of Study 1 supported the hypothesis and showed that the findings were attributable to managers' greater organizational commitment. Study 2 showed that managers who perceived procedures to be less fair were less likely to report practicing the behaviors needed from effective managers in times of change. Moreover, the relationship between procedural unfairness and managers' behaviors was mediated by their self-esteem. Subordinates of managers who engaged in less effective managerial behaviors, in turn, had more negative perceptions of their immediate work environments. Copyright 2000 Academic Press.     

Why individuals want money is what matters: Using self-determination theory to explain the differential relationship between motives for making money and employee psychological health

Researchers have debated for years whether money can lead to happiness. Indeed, the findings to date are contradictory in regard to the impact of individuals’ motives for making money on their psychological well-being. This study aimed to reconcile these findings and show that certain motives for making money can be beneficial to individuals’ psychological health, while others can be detrimental, not only by reducing well-being, but also by increasing ill-being. Based on self-determination theory, basic psychological needs (autonomy, competence, and relatedness) were hypothesized to be the psychological mechanism explaining these differential effects. More precisely, need satisfaction and need frustration were hypothesized to mediate the relationship between employees’ money motives and psychological health (well-being and ill-being). Our findings suggest that self-integrated motives for making money lead to greater well-being and lesser ill-being by positively predicting need satisfaction and negatively predicting need frustration. On the other hand, non-integrated motives for making money appear to result in lesser well-being and greater ill-being by being negatively associated with need satisfaction and positively associated with need frustration. Together, these findings suggest that money motives can have differential effects on employees’ psychological health depending on whether these underlying reasons are need-satisfying or need-frustrating life goals.     

Applying self-determination theory to understand the motivational impact of cash rewards: New evidence from lab experiments

We investigated, based on self-determination theory (SDT), the impact of the functional meaning of monetary rewards on individuals' motivation and performance and further tested the role of the psychological needs as the underlying mechanism. In two experimental studies, we show that when presented in an autonomy-supportive way, rewards lead participants to experience greater intrinsic motivation, which leads them to perform better, than when monetary rewards are presented in a controlling way. This is mediated by greater psychological need satisfaction, indicating that through greater feelings of competence, autonomy, and relatedness, individuals experience greater intrinsic motivation for the task at hand. Our findings suggest that rewards can have a distinct effect on individuals' motivation and performance depending on whether they take on an autonomy-supportive or controlling meaning, thus providing empirical evidence for the theoretical and practical implications of SDT's concept of functional meaning of rewards. By highlighting the importance of this concept, this research contributes to our understanding of the effectiveness of such rewards in the workplace, suggesting that they can foster employee motivation and performance if organisations present them to employees in an autonomy-supportive way to convey an informational meaning and positively contribute to their psychological need stisfaction.     

Psychological Factors Associated with a Better Quality of Life Following Head-Up Tilt Testing

Quality of life (QoL) is reduced in patients with recurrent vasovagal (VVS) or unexplained syncope (US). Little is known concerning the natural evolution of QoL following diagnosis. Psychological factors contributing to QoL improvement, such as psychological distress and self-efficacy remain to be explored. The objective of this study is to examine whether QoL changes 2 months and 6 months following head-up tilt (HUT) testing as well as to determine whether psychological factors are predictive of changes in QoL. Seventy-three patients undergoing HUT for recurrent syncope were interviewed 1 month before as well as 2 months and 6 months following HUT, using semi-structured interviews and questionnaires. Pre-HUT QoL was significantly worse than at the 2-month (p = 0.000) and 6-month follow-ups (p = 0.000). Psychological distress at baseline was associated with worse QoL 2 months post-HUT (Beta = .280; p = .024), independently of socio-demographic and clinical factors. Improved self-efficacy at follow-up predicted improvements in QoL (Beta = −.186; p = .023). Two and 6 months post-HUT, QoL is mproved in patients with recurrent syncope. Better QoL is predicted by low psychological distress and a heightened sense of self-efficacy following HUT. Strategies for enhancing self-efficacy and reducing psychological distress could be an efficient way to promote QoL in patients suffering from recurrent syncope.