A one-boundary drift-diffusion model for time to collision estimation in a simple driving task

ABSTRACT

Driving is a complex everyday task. Every year a huge number of driving accidents around the world causes serious physical and mental injuries and deaths. The correct estimation of the remaining time to reach the other vehicles on the road, known as time to collision (TTC), is an important factor to avoid accidents. In this study, we aimed to use a drift-diffusion model (DDM) to better understand the participants’ estimation of TTC in two driving experiments. Both experiments were the same, except that in one of them participants were asked to finish the experiment as fast as they could, while in the other experiment there was no time constraint. DDM fitted the data from all participants well in both experiments according to the chi-square goodness of fit criterion. Also, results showed that time pressure increases subjects’ estimated TTC, the rate of accumulation of sensory information and the response threshold.     

Parenting Style,Basic Psychological Needs,and Emotional Creativity: A Path Analysis

This study examined the relationship between parental styles and emotional creativity and investigated the mediating role of the fulfillment of basic psychological needs in this relationship. The population included 3372 undergraduate students, among whom, 375 (177 females and 198 males) were selected by multi-stage cluster sampling method. The respondents filled in three questionnaires as follows: 1) the Emotional Creativity Inventory (ECI), 2) the Parents as Social Context Questionnaire (PSCQ), and 3) the Basic Psychological Needs Scale (BPNS). A path analysis showed that the components of parenting style could predict students’ emotional creativity. In detail, the warmth and structure styles of parenting positively and the coercion and chaos styles of parenting negatively predict emotional creativity of students. The dimensions of autonomy and competence (of satisfying the basic psychological needs) had a mediating role between parenting style and emotional creativity. These results showed the importance of factors (parenting style and basic psychological needs) influencing emotional creativity of students. A greater focus on satisfying the dimensions of basic psychological needs (i.e. autonomy and competence) and proper parenting style (i.e. warmth and structure styles) could lead to a higher level of creativity among students.     

Assessing changes in brain electrical activity and functional connectivity while overtaking a vehicle

ABSTRACT

Driving is a daily requirement and an indispensable activity for many people. However, still little is known about how driving is supported by the brain. We used electroencephalography to study the changes in brain activity and its functional connectivity in a simulated driving task. We focused on overtaking and studied this activity in three phases: before overtake, during overtake, and after overtake. Our results showed that mu power in motor and sensorimotor areas decreased during overtake and again increased after overtake. On the other hand, beta oscillations in frontal areas were at their highest level in the “before overtake” phase. It can be interpreted that the “before overtake” was the most attention-demanding phase. In addition, we found that the connectivity between right and left prefrontal regions and right and left occipital regions in alpha (and mu) band power was significantly stronger in the “during overtake” compared to the other two conditions.