Carboxylate ester-based electrolytes for Na-ion batteries.

Sodium-ion batteries (SIBs) is a promising technology for next-generation energy storage. However, their performance is limited at low temperatures due to the inferior bulk and interfacial resistance of current electrolytes. Here we present a systematic study to evaluate carboxylate ester-based electrolytes for SIB applications, due to their favorable properties (i.e., low melting point, low viscosity and high dielectric constant). The effects of salt, concentration and solvent molecular structure were systematically examined and compared with those of carbonate-based electrolytes. By combining electrochemical tests with spectroscopic characterization, the performance of selective carboxylate ester-based electrolytes in hard carbon/Na and Na3V2(PO4)3/Na half-cells was evaluated. We found carboxylates enable high electrolyte conductivities, especially at low temperatures. However, carboxylates alone are inadequate to form a stable interphase due to their high reactivity, which can be addressed by choosing a suitable anion and facilitating anion-rich Na+ solvation by increasing salt concentration. Fundamental knowledge on the chemistry-property-performance correlation of this new family of electrolytes was obtained, and their benefits and pitfalls were thoroughly discussed. These discoveries and knowledge will shed light on the potential of carboxylate ester-based electrolytes and provide the foundation for further electrolyte engineering.

Corrigendum: Flattening the COVID-19 curve: Emotions mediate the effects of a persuasive message on preventive action.

[This corrects the article DOI: 10.3389/fpsyg.2022.1047241.].

The potential of biophysiology for understanding motivation, engagement and learning experiences.

BACKGROUND AND AIMS: Integrative models applied to human learning and performance emphasize the joint operation of biological, psychological, social, and educational processes to fully understand human functioning. Educational psychology researchers have typically emphasized psycho-educational and psycho-social factors in motivation, engagement and learning, but do not often consider the biophysiological factors. RESULTS: This Editorial and Special Issue advances current understanding on the role of biophysiological factors and processes in students' and teachers' motivation, engagement, and learning experiences, by showcasing recent educational research that included biophysiological measures and methods. CONCLUSIONS: As we discuss, conducting integrative biophysiological and psycho-educational research has potential to derive vital substantive, methodological, and applied insights that provide a rigorous basis for more effective educational theory, research, and practice.

Reading with induced worry: The role of physiological self-regulation and working memory updating in text comprehension.

BACKGROUND: An interplay of emotional and cognitive aspects underlies academic performance. We focused on the contribution of such interplay to text comprehension. AIMS: We investigated the effect of worry on comprehension and the role of two potential moderators of this effect: physiological self-regulation as resting heart rate variability (HRV) and working memory updating. SAMPLE: Eighty-two seventh graders were involved in a quasi-experimental design. METHODS: Students read an informational text in one of two reading conditions: to read for themselves to know more (n = 46; low-worry condition) or to gain the highest score in a ranking (n = 36; high-worry condition). Students' resting HRV was recorded while watching a video of a natural scenario. The executive function of working memory updating was also assessed. After reading, students completed a comprehension task. RESULTS: Findings revealed the moderating role of HRV in the relationship between induced worry and text comprehension. In the high-worry condition, students with higher resting HRV performed better than students who read under the same instructions but had lower HRV. In contrast, in the low-worry condition, students with higher resting HRV showed a lower performance as compared to students with lower HRV. Finally, working memory updating was positively related to text comprehension. CONCLUSIONS: Our findings indicate that the cognitive component of anxiety, that is, worry, plays a role in performing a fundamental learning activity like text comprehension. The importance of physiological self-regulation emerges clearly. In a condition of high worry, higher ability to regulate emotions and thoughts acts as a protective factor.

Flattening the COVID-19 curve: Emotions mediate the effects of a persuasive message on preventive action.

Introduction: Across four countries (Canada, USA, UK, and Italy), we explored the effects of persuasive messages on intended and actual preventive actions related to COVID-19, and the role of emotions as a potential mechanism for explaining these effects. Methods: One thousand seventy-eight participants first reported their level of concern and emotions about COVID-19 and then received a positive persuasive text, negative persuasive text, or no text. After reading, participants reported their emotions about the pandemic and their willingness to take preventive action. One week following, the same participants reported the frequency with which they engaged in preventive action and behaviors that increased the risk of contracting COVID-19. Results: Results revealed that the positive persuasive text significantly increased individuals' willingness to and actual engagement in preventive action and reduced risky behaviors 1 week following the intervention compared to the control condition. Moreover, significant differences were found between the positive persuasive text condition and negative persuasive text condition whereby individuals who read the positive text were more willing and actually engaged in more preventive action compared to those who read the negative text. No differences were found, however, at the 1-week follow-up for social distancing and isolation behaviors. Results also revealed that specific discrete emotions mediated relations between the effects of the texts and preventive action (both willing and actual). Discussion: This research highlights the power of educational interventions to prompt behavioral change and has implications for pandemic-related interventions, government policy on health promotion messages, and future research.

Lessons in a Green School Environment and in the Classroom: Effects on Students' Cognitive Functioning and Affect.

The positive impact of short-term exposure to nature during a green recess in a school day is documented in the literature. In this study we investigated cognitive, academic, and affective effects of a single contact with nature during a regular school lesson in the greenness, compared to an usual classroom lesson, on young students in second and third grades (N = 65). In a within-subjects design, for the cognitive effects we examined children's (a) selective and sustained attention and (b) math calculation performance in common school tasks. For affective effects we considered (c) their positive and negative mood and (d) the perception of environmental restorativeness. Findings revealed that after a single lesson taught in the green school garden, children had greater selective attention and math calculation performance in two tasks than after a similar lesson in the classroom environment. Moreover, children with higher self-reported emotional difficulties showed greater selective attention and reported a statistically significant increase in positive affect and a tendency to a significant decrease in negative affect after the lesson in the greenness than in the classroom. Students also perceived the green space as more restorative than the classroom environment. Results are discussed against theories on the benefits of exposure to natural environments, highlighting the theoretical and practical significance of the study.

Children's Attentional Processes in Outdoor and Indoor Environments: The Role of Physiological Self-Regulation.

Previous research has documented that exposure to green spaces has the beneficial effects of attention restoration and stress reduction. This study investigated the effects of indoor (classroom) and outdoor (green school garden) environments on attentional processes in interaction with emotion and physiological self-regulation. Children in third and fourth grades (n = 42) completed a school-related emotional Stroop task assessing the effects of outdoor and indoor classroom backgrounds when facing positive and negative stimuli. Children's attentional patterns in a task completed in both environments were also assessed. Heart rate variability was registered at rest as an index of physiological self-regulation. The results revealed that children were less distracted from negative emotional materials when presented with outdoor compared with indoor background stimuli. Greater selective attention and sustained attention were shown in the green than in the classroom environment. Moreover, sustained attention varied in relation to physiological self-regulation but only when performing the task indoor.

Do medium and Context Matter when learning from multiple complementary Digital texts and videos?

Students more than ever learn from online sources, such as digital texts or videos. Little research has compared processes and outcomes across these two mediums. Using a between-participants experimental design, this study investigated whether medium (texts vs. videos) and context (less authoritative vs. more authoritative), independently and in concert, affected students' engagement, integrated understanding, and calibration. The two mediums presented identical information on the topic of social media, which was distributed across two complementary texts in the text condition and across two complementary videos in the video condition. In the less authoritative context, the two information sources (texts or videos) were posted by a friend on Facebook; in the more authoritative context, the same information sources (texts or videos) were posted by a professor on Moodle. Results showed a main effect of medium on behavioral engagement in terms of processing time, as students used longer time watching the two videos than reading the two digital texts. No other main medium or context effects were statistically significant; nor were there any interaction effects of medium with context on any of the outcome variables. The findings are discussed in light of the alternative hypotheses that guided the study and the directions it suggests for future research. Supplementary Information: The online version contains supplementary material available at 10.1007/s11251-022-09591-8.

Control and value appraisals and online multiple-text comprehension in primary school: The mediating role of boredom and the moderating role of word-reading fluency.

BACKGROUND: Online multiple-text comprehension is a key skill of the 21st Century, yet the study of its relations with boredom in young students has been disregarded. Boredom is an achievement emotion expected to be predicted negatively by antecedents like control and value appraisals and to be associated to a negative performance. Notwithstanding its documented domain-specificity, scarce attention has been paid to investigating these relations with primary-school students in the reading domain, and specifically for online multiple-text comprehension, and to how such relations are moderated by basic cognitive abilities. AIMS: Considering separately two settings (homework, test), we studied the mediation of boredom in the relation between control-value appraisals and online multiple-text comprehension in primary-school students, focusing on the moderating role of word-reading fluency. SAMPLE: Participants were 334 fourth and fifth graders. METHODS: We evaluated students' reading-related self-efficacy and task-value, reading-related boredom for homework and tests, word-reading fluency, and online multiple-text comprehension. RESULTS: Path analyses revealed negative relations between control-value appraisals and boredom for homework and tests, and between boredom and online multiple-text comprehension for tests only. For the latter, word-reading fluency moderated the relation between appraisals, boredom, and comprehension: Boredom negatively related to comprehension only for students with high word-reading fluency. CONCLUSIONS: Findings are discussed focusing on antecedents of online multiple-text comprehension as a literacy skill critical in the 21st Century. We underlined their implications for learning in general and specifically for the current educational changes due to the COVID-19 pandemic.

Physiological responses to a school task: The role of student-teacher relationships and students' emotional appraisal.

BACKGROUND: To be successful, students must learn to deal with socially and cognitively demanding tasks. Much remains unknown about the effects of previous classroom experiences and of students' emotional appraisal of a task on their physiological adaptive responses to it. AIMS: To investigate how children's physiological response to a social and cognitive task would be directly and interactively influenced by the perceived student-teacher relationship and by children's emotional appraisal of what reaction they expect to have while completing the task. METHODS: One hundred and sixteen second and third graders took part in the study. Children completed a cognitive and social stress task. Before the task, they were interviewed on their emotional appraisal of the task and on student-teacher relationships. Children's cardiac activity was registered at rest and during the task to measure physiological activation (heart rate) and self-regulation (heart rate variability). RESULTS: Heart rate variability during the task was positively correlated with the appraised emotional valence of the task and of being observed while doing it. Regression analyses showed that children's physiological self-regulation during the task was affected by the interaction between student-teacher relationships and appraised emotional valence of being observed. Only among children who had experienced negative student-teacher relationships, an active physiological self-regulation was observed in response to the task when they expected it to be positive compared to when they perceived it as negative. CONCLUSIONS: Children's emotional appraisal of tasks and the quality of student-teacher relationships are important to promote a functional physiological response of self-regulation that underlies academic functioning and well-being at school.

Going beyond children's single-text comprehension: The role of fundamental and higher-level skills in 4th graders' multiple-document comprehension.

BACKGROUND: Children's comprehension of single texts relies on both foundational and higher-level skills. These are also assumed to support multiple-document comprehension, but their relative importance has not been examined, to date. Multiple-document comprehension additionally requires the identification and use of information about each document's source. AIMS: This study examined multiple-document comprehension in primary school-aged children. It sought to determine the relative importance of skills proposed to be common to both single-text and multiple-document comprehension (word reading fluency, verbal working memory, comprehension monitoring) and specific to the latter (source use). Single-text comprehension and prior topic knowledge were considered as moderator and control. SAMPLE: Participants were 94 children in the fourth year (mean age = 9; 7 years; 52% females). METHODS: Children read three documents on each of two topics (chocolate and video games). Multiple-document comprehension and source use were assessed through short essays. Independent measures of the fundamental and higher-level skills were used. RESULTS: There was a significant direct and indirect influence of word reading fluency on comprehension of multiple documents on videogames and also an indirect influence of comprehension monitoring. Indirect influences of word reading fluency and comprehension monitoring on multiple-document comprehension for both topics were also apparent. Verbal working memory was not a unique predictor. When source information was identified, it was included to support the argument in the composition. CONCLUSIONS: Efficient word reading, comprehension monitoring, and single-text comprehension are important for multiple-document comprehension in young readers. Implications of these findings and differences between the two document sets are discussed.

The interplay of reading-related emotions and updating in reading comprehension performance.

BACKGROUND: Reading comprehension can be considered the main learning activity. All learning experiences are infused with emotions; however, to date, few studies have focused on the role of emotional aspects in reading comprehension performance. The impact of emotions on academic achievement is thought to be mediated or moderated by cognitive aspects. Among them, working memory updating is an executive function that plays a crucial role in reading comprehension. AIMS: This study aimed to investigate the relationships between reading-related emotions and reading comprehension performance. We also consider the role that updating may play in these relationships. SAMPLE: Two hundred and eight 8th graders were involved in four sessions. METHOD: Students completed measures of achievement emotions specifically related to reading comprehension activity, updating, and reading comprehension performance. Gender and general cognitive ability were also considered as control variables. Mixed-effects models were used for statistical analyses. According to the Akaike information criterion (AIC; Akaike, 1974), we selected the most plausible model among a set of candidate models fitted to the same data. RESULTS: Results showed that activating-negative emotions (i.e., anxiety, anger, and shame), deactivating-negative emotions (i.e., boredom and hopelessness), and updating are related with reading comprehension performance. Moreover, the interaction between activating-negative emotions and updating also emerged. When activating-negative emotions interact with low and moderate updating, students' reading comprehension performance gets worse. CONCLUSIONS: The study indicates the moderating role of a main cognitive ability in the link between reading-related emotions and reading comprehension performance. Strategies can be taught to improve students' ability to self-regulate negative emotions and to update information in working memory.

Advanced theory of mind uniquely contributes to children's multiple-text comprehension.

This study examined the contribution of advanced theory of mind (AToM), operationalized as second- or higher-order recursive mentalistic reasoning, to multiple-text comprehension in fourth and fifth graders (N = 184). The role of AToM was analyzed by taking into account children's individual characteristics (i.e., age, gender, prior topic knowledge, word reading fluency, vocabulary knowledge, and single-text comprehension) and task features (i.e., contrast between positions on the topic of two sets of texts). Mixed models analysis revealed that AToM uniquely contributed to comprehension of multiple texts over and above the individual and task variables. In addition, the contribution of AToM to the comprehension of multiple texts did not significantly differ for the two tasks despite differences in contrast between positions on the topic. Results indicate that children's ability to consider different perspectives and mental states is a relevant unique predictor of multiple-text comprehension.

Parents' Perceptions of Student Academic Motivation During the COVID-19 Lockdown: A Cross-Country Comparison.

The COVID-19 outbreak has ravaged all societal domains, including education. Home confinement, school closures, and distance learning impacted students, teachers, and parents' lives worldwide. In this study, we aimed to examine the impact of COVID-19-related restrictions on Italian and Portuguese students' academic motivation as well as investigate the possible buffering role of extracurricular activities. Following a retrospective pretest-posttest design, 567 parents (n Italy = 173, n Portugal = 394) reported on their children's academic motivation and participation in extracurricular activities (grades 1 to 9). We used a multi-group latent change score model to compare Italian and Portuguese students': (1) pre-COVID mean motivation scores; (2) rate of change in motivation; (3) individual variation in the rate of change in motivation; and (4) dependence of the rate of change on initial motivation scores. Estimates of latent change score models showed a decrease in students' motivation both in Italy and in Portugal, although more pronounced in Italian students. Results also indicated that the decrease in students' participation in extracurricular activities was associated with changes in academic motivation (i.e., students with a lower decrease in participation in extracurricular activities had also a lower decrease in motivation). Furthermore, students' age was significantly associated with changes in motivation (i.e., older students had lower decrease). No significant associations were found for students' gender nor for parents' education. This study provides an important contribution to the study of students' academic motivation during home confinement, school closures, and distance learning as restrictive measures adopted to contain a worldwide health emergency. We contend that teachers need to adopt motivation-enhancing practices as means to prevent the decline in academic motivation during exceptional situations.

Profiles of vagal withdrawal to challenging interactions: Links with preschoolers' conceptual shifting ability.

The current study investigated profiles of vagal withdrawal in response to a challenging task in preschoolers. Also, the association between those profiles and conceptual shifting ability was assessed. Electrocardiogram of 43 four-year-olds was registered during a sequence of games including a win phase and a lose phase, while conceptual shifting ability was assessed via a standardized test. Cluster analyses revealed three profiles of cardiac vagal response to the task. Children in the first cluster displayed significant vagal withdrawal, children in the second cluster showed nonsignificant vagal withdrawal, while children in the third group displayed vagal augmentation to the challenge. These profiles differentiated preschoolers' conceptual shifting ability. Specifically, children with vagal withdrawal had the best performance in categorization and flexibility tasks and committed fewer perseverative errors compared to children who showed blunted vagal withdrawal or vagal augmentation to the challenge. Implications for theory and practice are discussed.

First-graders' allocation of attentional resources in an emotional Stroop task: The role of heart period variability and classroom climate.

BACKGROUND: Children's ability to remain focused on a task despite the presence of emotionally salient distractors in the environment is crucial for successful learning and academic performance. AIMS: This study investigated first-graders' allocation of attentional resources in the presence of distracting emotional, school-related social interaction stimuli. Moreover, we examined whether such attentional processes were influenced by students' self-regulation, as indexed by heart period variability, observed classroom climate, or their interaction. SAMPLE: Seventy-two-first graders took part in the study. METHODS: To assess allocation of attentional resources, students' reaction times on an emotional Stroop task were registered by recording response times to colour frames placed around pictures of distracting emotional, school-related social interaction stimuli (i.e., emotional interference index). Moreover, heart period variability was measured by recording children's electrocardiogram at rest during an individual session, whereas classroom climate was observed during class activities by a trained researcher. RESULTS: Images representing negative social interactions required greater attentional resources than images depicting positive ones. Heart period variability and classroom climate were each significantly and independently associated with the emotional interference index. A significant interaction also emerged, indicating that among children experiencing a negative classroom climate, those who had a higher basal heart period variability (higher self-regulation) were less distracted by negative emotional material and remained more focused on a task compared to those with lower heart period variability (lower self-regulation). CONCLUSIONS: Negative interactions require greater attentional resources than positive scenes. Moreover, with a negative classroom climate, higher basal heart period variability is a protective factor. Implications for theory and practice are discussed.

Attentional Bias for Academic Stressors and Classroom Climate Predict Adolescents' Grades and Socioemotional Functioning.

Using a dot-probe detection task, this longitudinal study investigated whether adolescents show an attentional bias for academic stressors at the beginning of the school year (T1), and if such allocation of attention interacts with classroom climate (CC) to predict grades and socioemotional functioning at the end of the term (T2). Among 133 eighth-graders, the majority showed a perceptual bias toward academic threats. Regression analyses indicated that a greater bias at T1 predicted lower grades and more socioemotional problems at T2, and that CC moderated these relationships. Students perceiving low CC and displaying greater attentional bias reported lower grades and more socioemotional problems. Teachers may promote a positive CC to prevent the negative effects of a biased attention on youths' school adjustment.

The role of cardiac vagal tone and inhibitory control in pre-schoolers' listening comprehension.

This study investigated the role of basal cardiac activity and inhibitory control at the beginning of the school year in predicting oral comprehension at the end of the year in pre-schoolers. Forty-three, 4-year-olds participated in the study. At the beginning of the school year children's electrocardiogram at rest was registered followed by the assessment of inhibitory control as well as verbal working memory and verbal ability. At the end of the year all children were administered a listening comprehension ability measure. A stepwise regression showed a significant effect of basal cardiac vagal tone in predicting listening comprehension together with inhibitory control and verbal ability. These results are among the first to show the predictive role of basal cardiac vagal tone and inhibitory control in pre-schoolers' oral text comprehension, and offer new insight into the association between autonomic regulation of the heart, inhibitory control, and cognitive activity at a young age.

Effects of perceived school well-being and negative emotionality on students' attentional bias for academic stressors.

BACKGROUND: Previous research indicates that children can display different attention allocation patterns in response to threat. However, data are lacking on the possible existence of an attentional bias in response to academic stressors, and whether variables related to school well-being (SWB) and students' individual characteristics may influence such attentional patterns. AIM: We aimed to investigate whether students show an attentional bias for school-related stressors. We sought to identify groups of students who differ in their perceived SWB, and to test whether they display different attention allocation patterns. We also examined whether negative emotionality moderates the expected association between students' SWB and attentional bias. METHODS: Eighth-grade students completed a dot-probe detection task to register attentional patterns towards or away from an academic threatening word. SWB in terms of school anxiety, school-based stress, and perceived class climate was also assessed via self-reports. In addition, participants reported on their negative emotionality. RESULTS: The results indicated that students showed an attentional bias towards words describing academic stressors. Cluster analyses allowed the identification of two groups of students with high versus low SWB. Regression analysis indicated that those with low SWB were more likely to show a greater bias and that negative emotionality moderated this relationship. Specifically, within the context of low SWB, students with high negative emotionality were more prone to biased attention towards school-related stressors compared with students with low negative emotionality. CONCLUSIONS: The present data indicate a perceptual bias for the detection of academic threats. Within the school practice, teachers should promote SWB and devote specific attention to students with high negative emotionality to reduce a biased allocation of attention in response to school-related stressors.