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Remote learning and students' mental health during the Covid‑19 pandemic: A mixed‑method enquiry
No full textConceptions et postures (il)légitimées de la didactique des langues : démarche réflexive contextualisée
No full textDer Fingerabdruck auf dem Kassenbon
No full textTickets und Quittungen auf Thermopapieren tragen Fingerabdrücke und sind damit Beweismittel in der Kriminalistik. Allerdings ist Thermopapier ein problematischer Spurenträger: Viele der gängigen Methoden, mit denen die Spurensicherung Fingerabdrücke sichtbar macht, lösen in Thermopapier die Farbreaktion aus. Das Beweisstück färbt sich schwarz, der Aufdruck wird unleserlich, die Beweiskraft geht verloren. Dennoch lassen sich durch kontrollierte Wärmezufuhr latente Fingerabdrücke schonend entwickeln. Zudem können Schüler daran lernen, wie thermochrome Gemische funktionieren
Does the 6-minute walk test in hospitalized COPD patients exclusively correlate with lung function parameters or should psychological factors also be taken into account?
Get PDFThe 6-minute walk test is generally considered a standard test for the evaluation of short-term maximal physical performance. It has not been evaluated whether psychological factors, such as anxiety or depression, affect the performance or the results of the test. The main aim of this study was to investigate whether a correlation exists between psychological factors and the data from the 6-minute walking test. The study cohort consisted of 85 (♀ = 34 and ♂ = 51) 66 ± 10 (mean ± SD) year-old patients with chronic obstructive pulmonary disease (COPD) hospitalized for disease exacerbation. Forced Expiratory Volume in the first second (FEV1) (% predicted) as predictor for lung function, as well as anxiety and depression symptoms assessed using the Hospital Anxiety and Depression Scale (HADS) as psychological predictors were collected. Bivariate correlations and hierarchical linear regression models were used to analyse the correlations. Walking distance was on average 260m ± 107m and ranged from 64m to 480m. HADS was negatively correlated with 6-min walking distance (r = 0.441, p = .0009, r = -.523, p = 00006). Hierarchical linear regression showed that FEV1 alone explained 33%, and together with the psychological variables anxiety and depression explained 42% of the variance of results from the 6-minute walking test. These findings demonstrated that 11% of the data correlated with the psychological variables alone (p = .011). The effect size for lung function (f2 = .717) and psychological variables (f2 = .352) were high, whereas the socio-demographic variables sex, age, educational level and BMI could not explain any additional variance in our cohort. In conclusion, our study indicates that psychological factors such as symptoms of depression and anxiety are associated with lower physical functional performance in the 6-minute walking test. As such, these factors should also be assessed. Future research is needed to show if treatments of anxiety and depression can improve the walking distance in COPD patients
Is the fine motor–executive functions link stronger for new compared to repeated fine motor tasks?
Get PDFAlthough the motor–executive function (EF) link is actively being investigated, there remain open questions surrounding why some studies found associations between specific motor and specific EF tasks, while others did not. Furthermore, it is also yet unknown which factors impact the magnitude of the motor–EF link. Findings from neuroimaging studies have proposed that neural activity in networks that are important for motor and cognitive tasks is especially strong when a task is new. In the present behavioral study, we systematically investigated the impact that task novelty had on the motor–EF link. In our study, n = 124 kindergarten children aged five to six administered in a within-subject design three fine motor tasks of the Movement Assessment Battery for Children-2 (Posting Coins, Threading Beads, and Drawing Trail) twice in succession (new vs. repeated), and three EF tasks (adapted versions of a Flanker, a N-back, and the Advanced Dimensional Chance Card Sort task). Results not only replicated the fine motor–EF link, but also showed a significantly stronger association between EF and the new task compared to the repeated Drawing Trail task. However, for the time-based task of Posting Coins and Threading Beads, motor–EF associations did not differ between the new task and the repeated task. Future investigations of more than two repetitions will provide further insights into the assumption that the motor–EF link is mainly driven by the EF processes triggered when a task is new, demands attention, and requires fast and flexible adaptation
