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Background The d2‐R test is a cancellation test developed in Germany to measure concentration and attention. This study examined the validity of the d2‐R test for Japanese adolescents in comparison with German standardized data. Methods Japanese junior high school students (n = 121; 61 girls, 60 boys) participated in this study. The students’ performance scores in the d2‐R test were compared with their daily attentiveness and hyperactivity/impulsiveness assessments conducted by the teachers. The assessments were evaluated using the attention deficit–hyperactivity disorder rating scale, fourth edition (ADHD‐RS)‐IV. The comparison with German counterparts was also made. Results Students who were rated as less attentive and more hyperactive/impulsive performed more slowly and committed more errors in the d2‐R test. Although there were no sex differences in any of the d2‐R parameters, male students were rated higher than female students in all of the ADHD‐RS‐IV scores. Japanese adolescents outscored German counterparts on speed, concentration, and carefulness. Conclusion The concurrent validity of the d2‐R test is confirmed. It is an appropriate index to measure the sustained and focused attention of Japanese adolescents. The present research merits attention as the first investigation of the d2‐R test conducted for Japanese adolescents.

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The professional stress is a physical and emotional harmful reaction. In fact, it presents a major public health problem in Morocco. Our work is directed to study the differences between the various groups of professional and nonprofessional drivers in terms of stress reactions, noise nuisance and implication in the production accidents. The present study is transversal descriptive type based on a questionnaire and neuropsychological tests conducted by 60 nonprofessional drivers and 60 taxi drivers in Kenitra. Two scales evaluated the stress: the Resistance Test of Stress (TRS) and the Perceived Stress Scale (PSS). According to this last scale, 63.5% of the taxi drivers were considered as stressed. These drivers have the following specific components: mood trouble, sleep trouble, pressure of time, work boredom, stress sensation and tiredness at the end of driving. 65% of drivers take a pause after 5 to 6 hours of work. According to the Test of Resistance at the Stress, the taxi driver's populations are more homogeneous but are less likely to resist stress compared to their nonprofessionals counterparts. Indeed to work on the professional stress requires a qualitative and quantitative approach phenomenon allowing a more complete vision. This study sheds new light on the understanding of stress at work by using new measurement and evaluation methods such as TRS, with an aim to reduce or to eliminate the number of road accident.