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Institute
Recent research on the dynamics between attentional and memory processes have outlined the idea that applying control in a conflicting situation directly leads to enhanced episodic memory of the processed information. However, in spite of a small subset of studies supporting this claim, the majority of the evidence in the field seems to support the opposite pattern. In this study, we used a face–word Stroop task to enforce different control modes either from trial to trial or in an item-specific manner. Both manipulations of congruency proved to be effective in making participants’ responses to conflicting stimuli more efficient over time by applying a trial-specific control mode. However, these manipulations had no impact on memory performance on a surprise recognition memory test. To our knowledge, this is the first attempt at measuring the memory consequences of the application of specific control modes at the trial level. The results reported here call for caution and possibly reconceptualization of the relationship between cognitive control and memory.
Measuring teaching cross-culturally - the issue of measurement invariance and sources of bias
(2021)
Im Kontext der Globalisierung nimmt das Interesse daran, Unterricht vergleichend zwischen Bildungssystemen der ganzen Welt zu untersuchen, kontinuierlich zu (Paine et al., 2016). Unterricht ist einer der stärksten Prädiktoren für Lernergebnisse von Schülerinnen und Schülern (Hattie, 2009). Folglich bieten internationale Vergleiche die einmalige Möglichkeit von besonders erfolgreichen Bildungssystemen zu lernen und geben Auskunft über die Generalisierbarkeit beziehungsweise über die kulturellen Variationen von Unterricht und dessen Wirksamkeit. Gleichzeitig sind sie richtungsweisend für bildungspolitische Entscheidungen (Klieme, 2020). Zur Erfassung von Unterrichtsmerkmalen aus der Perspektive der beteiligten Lehrkräfte und Schülerinnen und Schüler werden häufig Fragebögen in internationalen Schulleistungsstudien eingesetzt. Erste empirische Befunde weisen jedoch daraufhin, dass die Fragebogenskalen oftmals nicht messinvariant sind (z.B. Desa, 2014; He & Kubacka, 2015; Nilsen & Gustafsson, 2016). Das bedeutet, dass Unterschiede in den Messwerten zwischen Bildungssystemen nicht automatisch genuine Unterschiede im gemessenen Konstrukt, wie beispielsweise Unterschiede in der Klassenführung, reflektieren. Stattdessen entstehen diese teilweise durch nicht intendierte kulturelle Variationen im Antwortprozess (Bias), beispielsweise durch kulturelle Unterschiede in der Bedeutung der Items zur Messung von Klassenführung oder durch kulturspezifische Antworttendenzen (van de Vijver & Leung, 1997). Eine fehlende Messinvarianz hat folgenreiche Konsequenzen, da valide (Mittelwerts-)Vergleiche von Unterrichtsmerkmalen zwischen Bildungssystemen nicht möglich sind und somit die umfangreichen Datensätze internationaler Studien nicht ausgeschöpft werden können (Davidov et al., 2018a). Dennoch mangelt es in der international vergleichenden Bildungsforschung bisher an empirischen Studien, die mit fortgeschrittenen Analysemethoden die Messinvarianz von Unterrichtsmerkmalen prüfen, sowie an empirisch-fundierten Erkenntnissen zu den Ursachen der oftmals fehlenden Invarianz. Mit einer Kombination aus quantitativen und qualitativen Methoden widmet sich die vorliegende Dissertation in drei Beiträgen der Aufarbeitung dieser Forschungslücke. Sie konzentriert sich auf Fragebogenskalen zur Messung von zwei generischen Unterrichtsmerkmalen aus der Perspektive von Schülerinnen und Schülern, der Unterrichtsqualität mit den Dimensionen Klassenführung, konstruktive Unterstützung und kognitive Aktivierung und den Unterrichtsmethoden mit den Dimensionen lehrerzentrierte und schülerzentrierte Methoden und Methoden des Assessments.
Beitrag I prüft die Messinvarianz von PISA Skalen zur Erfassung der drei Basisdimensionen der Unterrichtsqualität zwischen 15 Bildungssystemen. Zusätzlich wird untersucht, ob die kulturelle Ähnlichkeit (operationalisiert als ähnliche oder identische Sprache) der Bildungssysteme einen Einfluss auf das Ausmaß der Messinvarianz besitzt. Da die Modellannahmen der häufig eingesetzten konfirmatorischen Faktorenanalyse zunehmend als zu strikt für Messinvarianzprüfungen im interkulturellen Kontext kritisiert werden (Rutkowski & Svetina, 2014), wird mit Alignment (Asparouhov & Muthén, 2014) eine flexiblere und angemessenere Methode verwendet. Dennoch erreichen die drei Basisdimensionen nur metrische (identische Faktorenladungen) und nicht skalare Invarianz (identische Intercepts) zwischen den 15 Bildungssystemen. Folglich sind valide Vergleiche von Mittelwertsunterschieden in der Unterrichtsqualität zwischen den 15 Bildungssystemen nicht möglich. Innerhalb der fünf Cluster, bestehend aus jeweils drei Bildungssystemen mit ähnlicher oder identischer Sprache, wird im Gegensatz dazu skalare Invarianz bestätigt. Die Ergebnisse aus Beitrag I legen nahe, dass die untersuchten Fragebogenskalen zur Messung von Unterrichtsqualität unterschiedlich zwischen Bildungssystemen funktionieren. Eine höhere Vergleichbarkeit scheint jedoch mit einer kulturellen und sprachlichen Ähnlichkeit der Befragten einherzugehen. Wird diese Ähnlichkeit bei der Analyse berücksichtigt, sind valide Vergleiche von Mittelwertsunterschieden für eine Teilmenge an Bildungssystemen mit invarianter Messung möglich.
Beitrag II knüpft an Ergebnisse aus Beitrag I an und untersucht potenzielle Ursachen der fehlenden Invarianz. Der Fokus liegt auf kulturellen Variationen im Antwortprozess, die zu einer eingeschränkten Datenvergleichbarkeit führen können (z.B. Schwarz et al., 2010). Beitrag II konzentriert sich auf die erste und zweite Stufe des Antwortprozesses, der Item-Interpretation und der Assoziation des Item-Inhaltes mit persönlichen Erfahrungen (Tourangeau, 1984). Mit Hilfe von kognitiven Interviews wird untersucht, wie Schülerinnen und Schüler aus China (Shanghai) und Deutschland PISA Items zur Messung konstruktiver Unterstützung interpretieren und welche Unterrichtserfahrungen sie mit den Items assoziieren. Die Ergebnisse der strukturierenden qualitativen Inhaltanalyse nach Kuckartz (2018) zeigen zwar, dass sowohl chinesische als auch deutsche Schülerinnen und Schüler die Items mehrheitlich mit Unterrichtsmethoden assoziieren, die zur Kompetenzunterstützung beitragen (beispielsweise Methoden zur Beseitigung von Verständnisproblemen). Es zeigen sich jedoch auch deutliche interpretative Variationen, sowohl für statistisch nicht messinvariante (nicht vergleichbare) Items als auch für messinvariante (vergleichbare) Items. Diese können zum einen auf Eigenschaften der Messung zurückgeführt werden. Hierzu zählt eine unterschiedliche Übersetzung des Terms Lernen (in Deutschland Lernfortschritt in China Lernstand). Zudem finden sich Hinweise, dass komplexe und uneindeutige Itemformulierungen mehr Spielraum für kulturspezifische Interpretationen zulassen. Die zweite Ursache der interpretativen Variationen ist ein unterschiedliches Verständnis von konstruktiver Unterstützung, das durch kulturelle Unterschiede in der Unterrichtsgestaltung und -zielsetzung erklärt werden kann (Leung, 2001). Neben der Kompetenzunterstützung assoziieren die deutschen Schülerinnen und Schüler die Items mehrheitlich mit Methoden zur Unterstützung ihrer Autonomie und ihres sozial-emotionalen Erlebens im Unterricht, wohingegen die chinesischen Schülerinnen und Schüler die Items mehrheitlich mit Methoden zur Unterstützung ihrer akademischen Produktivität (z.B. ihrer Aufmerksamkeit) assoziieren. Die Ergebnisse aus Beitrag II legen nahe, dass die Interpretation von Fragebogenitems variieren kann, je nach dem in welchem kulturellen Kontext die Frage gestellt wird. Sie betonen zudem, dass quantitative und qualitative Methoden miteinander kombiniert werden sollten, um verlässliche Information über die interkulturelle Vergleichbarkeit von Fragebogenitems zu erhalten ...
Motor imagery is conceptualized as an internal simulation that uses motor-related parts of the brain as its substrate. Many studies have investigated this sharing of common neural resources between the two modalities of motor imagery and motor execution. They have shown overlapping but not identical activation patterns that thereby result in a modality-specific neural signature. However, it is not clear how far this neural signature depends on whether the imagined action has previously been practiced physically or only imagined. The present study aims to disentangle whether the neural imprint of an imagined manual pointing sequence within cortical and subcortical motor areas is determined by the nature of this prior practice modality. Each participant practiced two sequences physically, practiced two other sequences mentally, and did a behavioural pre-test without any further practice on a third pair of sequences. After a two-week practice intervention, participants underwent fMRI scans while imagining all six sequences. Behavioural data demonstrated practice-related effects as well as very good compliance with instructions. Functional MRI data confirmed the previously known motor imagery network. Crucially, we found that mental and physical practice left a modality-specific footprint during mental motor imagery. In particular, activation within the right posterior cerebellum was stronger when the imagined sequence had previously been practiced physically. We conclude that cerebellar activity is shaped specifically by the nature of the prior practice modality.
Background: Diet and physical activity (PA) have a major impact on physical and mental health. However, there is a lack of effective strategies for sustaining these health-protective behaviors. A shift to a microtemporal, within-person approach is needed to capture dynamic processes underlying eating behavior and PA, as they change rapidly across minutes or hours and differ among individuals. However, a tool that captures these microtemporal, within-person processes in daily life is currently not present.
Objective: The APPetite-mobile-app is developed for the ecological momentary assessment of microtemporal, within-person processes of complex dietary intake, objectively recorded PA, and related factors. This study aims to evaluate the feasibility and usability of the APPetite-mobile-app and the validity of the incorporated APPetite-food record.
Methods: The APPetite-mobile-app captures dietary intake event-contingently through a food record, captures PA continuously through accelerometers, and captures related factors (eg, stress) signal-contingently through 8 prompts per day. Empirical data on feasibility (n=157), usability (n=84), and validity (n=44) were collected within the Eat2beNICE-APPetite-study. Feasibility and usability were examined in healthy participants and psychiatric patients. The relative validity of the APPetite-food record was assessed with a subgroup of healthy participants by using a counterbalanced crossover design. The reference method was a 24-hour recall. In addition, the energy intake was compared with the total energy expenditure estimated from accelerometry.
Results: Good feasibility, with compliance rates above 80% for prompts and the accelerometer, as well as reasonable average response and recording durations (prompt: 2.04 min; food record per day: 17.66 min) and latencies (prompts: 3.16 min; food record: 58.35 min) were found. Usability was rated as moderate, with a score of 61.9 of 100 on the System Usability Scale. The evaluation of validity identified large differences in energy and macronutrient intake between the two methods at the group and individual levels. The APPetite-food record captured higher dietary intakes, indicating a lower level of underreporting, compared with the 24-hour recall. Energy intake was assessed fairly accurately by the APPetite-food record at the group level on 2 of 3 days when compared with total energy expenditure. The comparison with mean total energy expenditure (2417.8 kcal, SD 410) showed that the 24-hour recall (1909.2 kcal, SD 478.8) underestimated habitual energy intake to a larger degree than the APPetite-food record (2146.4 kcal, SD 574.5).
Conclusions: The APPetite-mobile-app is a promising tool for capturing microtemporal, within-person processes of diet, PA, and related factors in real time or near real time and is, to the best of our knowledge, the first of its kind. First evidence supports the good feasibility and moderate usability of the APPetite-mobile-app and the validity of the APPetite-food record. Future findings in this context will build the foundation for the development of personalized lifestyle modification interventions, such as just-in-time adaptive interventions.
The COVID-19 pandemic has called worldwide for strong governmental measures to contain its spread, associated with considerable psychological distress. This study aimed at screening a convenience sample in Germany during lockdown for perceived vulnerability to disease, knowledge about COVID-19, symptoms of depression and anxiety, and behavioral responses. In an online survey, 1358 participants completed the perceived vulnerability to disease scale (PVD), the Patient Health Questionnaire (PHQ-4), and questionnaires on knowledge about COVID-19 and self-perceived change in behaviors in response to COVID-19. Lower and upper quartiles of the PVD were used to classify individuals into low and high PVD. A confirmatory factor analysis supported three factors representing risk, preventive and adaptive behavior as behavioral responses to COVID-19 lockdown. A structural equation model showed that the score of the knowledge scale significantly predicted the self-reported increase in adaptive and preventive behavior. The score in the PVD-subscale Perceived Infectability predicted a self-reported increase in preventive behavior, whereas the Germ Aversion score predicted a self-reported increase in preventive and a decrease in risk behavior. The score in PHQ-4 predicted a higher score in the perceived infectability and germ aversion subscales, and a self-reported decrease in adaptive behavior. Low-, medium- and high-PVD groups reported distinct patterns of behavior, knowledge, and mental health symptoms. This study shows that perceived vulnerability to disease is closely linked to preventive behaviors and may enhance adaptation to COVID-19 pandemic.
This systematic review investigated how successful children/adolescents with poor literacy skills learn a foreign language compared with their peers with typical literacy skills. Moreover, we explored whether specific characteristics related to participants, foreign language instruction, and assessment moderated scores on foreign language tests in this population. Overall, 16 studies with a total of 968 participants (poor reader/spellers: n = 404; control participants: n = 564) met eligibility criteria. Only studies focusing on English as a foreign language were available. Available data allowed for meta-analyses on 10 different measures of foreign language attainment. In addition to standard mean differences (SMDs), we computed natural logarithms of the ratio of coefficients of variation (CVRs) to capture individual variability between participant groups. Significant between-study heterogeneity, which could not be explained by moderator analyses, limited the interpretation of results. Although children/adolescents with poor literacy skills on average showed lower scores on foreign language phonological awareness, letter knowledge, and reading comprehension measures, their performance varied significantly more than that of control participants. Thus, it remains unclear to what extent group differences between the foreign language scores of children/adolescents with poor and typical literacy skills are representative of individual poor readers/spellers. Taken together, our results indicate that foreign language skills in children/adolescents with poor literacy skills are highly variable. We discuss the limitations of past research that can guide future steps toward a better understanding of individual differences in foreign language attainment of children/adolescents with poor literacy skills.
Previous research has demonstrated the efficacy of psychological interventions to foster resilience. However, little is known about whether the cultural context in which resilience interventions are implemented affects their efficacy on mental health. Studies performed in Western (k = 175) and Eastern countries (k = 46) regarding different aspects of interventions (setting, mode of delivery, target population, underlying theoretical approach, duration, control group design) and their efficacy on resilience, anxiety, depressive symptoms, quality of life, perceived stress, and social support were compared. Interventions in Eastern countries were longer in duration and tended to be more often conducted in group settings with a focus on family caregivers. We found evidence for larger effect sizes of resilience interventions in Eastern countries for improving resilience (standardized mean difference [SMD] = 0.48, 95% confidence interval [CI] 0.28 to 0.67; p < 0.0001; 43 studies; 6248 participants; I2 = 97.4%). Intercultural differences should receive more attention in resilience intervention research. Future studies could directly compare interventions in different cultural contexts to explain possible underlying causes for differences in their efficacy on mental health outcomes.
Children often perform worse than adults on tasks that require focused attention. While this is commonly regarded as a sign of incomplete cognitive development, a broader attentional focus could also endow children with the ability to find novel solutions to a given task. To test this idea, we investigated children’s ability to discover and use novel aspects of the environment that allowed them to improve their decision-making strategy. Participants were given a simple choice task in which the possibility of strategy improvement was neither mentioned by instructions nor encouraged by explicit error feedback. Among 47 children (8—10 years of age) who were instructed to perform the choice task across two experiments, 27.5% showed a full strategy change. This closely matched the proportion of adults who had the same insight (28.2% of n = 39). The amount of erroneous choices, working memory capacity and inhibitory control, in contrast, indicated substantial disadvantages of children in task execution and cognitive control. A task difficulty manipulation did not affect the results. The stark contrast between age-differences in different aspects of cognitive performance might offer a unique opportunity for educators in fostering learning in children.
Beneficial acute effects of resistance exercise on cognitive functions may be modified by exercise intensity or by habitual physical activity. Twenty-six participants (9 female and 17 male; 25.5 ± 3.4 years) completed four resistance exercise interventions in a randomized order on separate days (≥48 h washout). The intensities were set at 60%, 75%, and 90% of the one repetition maximum (1RM). Three interventions had matched workloads (equal resistance*nrepetitions). One intervention applied 75% of the 1RM and a 50% reduced workload (resistance*nrepetitions = 50%). Cognitive attention (Trail Making Test A—TMTA), task switching (Trail Making Test B—TMTB), and working memory (Digit Reading Spans Backward) were assessed before and immediately after exercise. Habitual activity was assessed as MET hours per week using the International Physical Activity Questionnaire. TMTB time to completion was significantly shorter after exercise with an intensity of 60% 1RM and 75% 1RM and 100% workload. Friedman test indicated a significant effect of exercise intensity in favor of 60% 1RM. TMTA performance was significantly shorter after exercise with an intensity of 60% 1RM, 90% 1RM, and 75% 1RM (50% workload). Habitual activity with vigorous intensity correlated positively with the baseline TMTB and Digit Span Forward performance but not with pre- to post-intervention changes. Task switching, based on working memory, mental flexibility, and inhibition, was beneficially influenced by acute exercise with moderate intensity whereas attention performance was increased after exercise with moderate and vigorous intensity. The effect of regular activity had no impact on acute exercise effects.