Search

Idea generation in interactive learning environments requires the consideration of the interactivity and materiality aspects of creativity. In educational robotics, idea generation is mediated through a technological object in a process allowing us to observe the three main components of divergent thinking: fluency, flexibility, and originality. Nevertheless, divergent thinking assessment has been mainly evaluated in the last decades through semantic idea generation tasks such the Alternative Uses Test (AUT), asking participants to write different uses for familiar objects. In our study, we aimed to analyze differences in the three divergent thinking components (fluency, flexibility, and originality) through the AUT as a semantic task and through an educational robotic task that engaged the participants in building their ideas interactively. Results show that the creative components are strongly correlated within but not between the two tasks, leading us to consider the differences in the creative processes engaged when generating ideas through building with robotic objects. The role of affordances in idea generation through educational robotics is discussed as an important difference to consider in the evaluation of creativity in interactive learning environments. [ABSTRACT FROM AUTHOR]

When participants engage twice in the same creative problem-solving task with educational robots, they have the possibility to repeat the same solution, allowing them to complete the task faster, or to show a creative intention and behavior, engaging them in developing a new solution. In this study, we aim to analyze the creative process considering the creative intention and the persistence in the creative process. For this purpose, we engaged 115 adults to perform twice the same problem-solving task using modular robotic cubes without specific instruction concerning the way to solve the task the second time. Creative intention is observed when the participant tests a new solution in the beginning of the second realization of the task, creative persistence behavior is show when participant stay engaged in a new plan although it requires time and efforts. Results show that participants' effective creative solution is related to their creative intention and the time engaged in the second occurrence of the educational robotic task (assessing the creative behavior persistence). These results suggest that the creative process leading to an effective creative solution in a repeated task requires an initial creative intention, but also a higher creative behavior persistence than engaging in a conservative behavior. [ABSTRACT FROM AUTHOR]

"Impairments in emotional information processing are frequently reported in attention deficit hyperactivity disorder (ADHD) at a voluntary, explicit level (e.g., emotion recognition) and at an involuntary, implicit level (e.g., emotional interference). Most of previous studies have used faces with emotional expressions, rarely examining other important sources of information usually co-occurring with faces in our every day experience. Here, we examined how the emotional content of an entire visual scene depicting real-world environments and situations is processed in ADHD. We systematically reviewed in PubMed, SCOPUS and ScienceDirect, using the PRISMA guidelines, empirical studies published in English until March 2019, about processing of visual scenes, with or without emotional content, in children and adolescents with ADHD. We included 17 studies among the 154 initially identified. Fifteen used scenes with emotional content (which was task-relevant in seven and irrelevant in eight studies) and two used scenes without emotional content. Even though the interpretation of the results differed according to the theoretical model of emotions of the study and the presence of comorbidity, differences in scene information processing between ADHD and typically developing children and adolescents were reported in all but one study. ADHD children and adolescents show difficulties in the processing of emotional information conveyed by visual scenes, which may stem from a stronger bottom-up impact of emotional stimuli in ADHD, increasing the emotional experience, and from core deficits of the disorder, decreasing the overall processing of the scene". [ABSTRACT FROM AUTHOR]

Visual categorization improves when object-context associations in scenes are semantically consistent, thus predictable from schemas stored in long-term memory. However, it is unclear whether this is due to differences in early perceptual processing, in matching of memory representations or in later stages of response selection. We tested these three concurrent explanations across five experiments. At each trial, participants had to categorize a scene context and an object briefly presented within the same image (Experiment 1), or separately in simultaneous images (Experiments 2–5). We analyzed unilateral (Experiments 1, 3) and bilateral presentations (Experiments 2, 4, 5), and presentations on the screen's horizontal midline (Experiments 1–2) and in the upper and lower visual fields (Experiments 3, 4). In all the experiments, we found a semantic consistency advantage for both context categorization and object categorization. This shows that the memory for object-context semantic associations is activated regardless of whether these two scene components are integrated in the same percept. Our study suggests that the facilitation effect of semantic consistency on categorization occurs at the stage of matching the percept with previous knowledge, supporting the object selection account and extending this framework to an object-context reciprocal influence on matching processes (object-context selection account). [ABSTRACT FROM AUTHOR]

Obesity and its related disorders have been associated with the presence in the blood of gut bacteria-derived lipopolysaccharides (LPS). However, the factors underlying this low-grade elevation in plasma LPS, so-called metabolic endotoxemia, are not fully elucidated. We aimed to investigate the effects of Western diet (WD) feeding on intestinal and hepatic LPS handling mechanisms in a rat model of dietinduced obesity (DIO). Rats were fed either a standard chow diet (C) or a Western Diet (WD, 45% fat) for 6 wk. They were either fed ad libitum or pair-fed to match the caloric intake of C rats for the first week, then fed ad libitum for the remaining 5 wk. Six-week WD feeding led to a mild obese phenotype with increased adiposity and elevated serum LPS-binding protein (LBP) levels relative to C rats, irrespective of initial energy intake. Serum LPS was not different between dietary groups but exhibited strong variability. Disrupted ileal mucus secretion and decreased ileal Reg3-γ and - β gene expression along with high ileal permeability to LPS were observed in WD compared with C-fed rats. Ileal and cecal intestinal alkaline phosphatase (IAP) activity as well as Verrucomicrobia and Bifidobacterium cecal levels were increased in WD-fed rats compared with C-fed rats. WD consumption did not impact mRNA levels of LPS-handling hepatic enzymes. Correlation analysis revealed that ileal passage of LPS, IAP activity, Proteobacteria levels and hepatic aoah gene expression correlated with serum LPS and LBP, suggesting that ileal mucosal defense impairment induced by WD feeding contribute to metabolic endotoxemia. [ABSTRACT FROM AUTHOR]

Only 400 km off the coast of East Africa, the island of Madagascar is one of the last large land masses to have been colonized by humans. While many questions surround the human occupation of Madagascar, recent studies raise the question of human impact on endemic biodiversity and landscape transformation. Previous genetic and linguistic analyses have shown that the Malagasy population has emerged from an admixture that happened during the last millennium, between Bantu-speaking African populations and Austronesian-speaking Asian populations. By studying the sharing of chromosome segments between individuals (IBD determination), local ancestry information, and simulated genetic data, we inferred that the Malagasy ancestral Asian population was isolated for more than 1,000 years with an effective size of just a few hundred individuals. This isolation ended around 1,000 years before present (BP) by admixture with a small African population. Around the admixture time, there was a rapid demographic expansion due to intrinsic population growth of the newly admixed population, which coincides with extensive changes in Madagascar's landscape and the extinction of all endemic large-bodied vertebrates. Therefore, our approach can provide new insights into past human demography and associated impacts on ecosystems. An Asian population of few hundred individuals was isolated for more than 1,000 years This isolation ended around 1,000 years ago by admixture with a small African population The newly admixed Malagasy population underwent a rapid demographic expansion The population growth coincides with extensive changes in Madagascar's landscape Based on genomic studies, Alva et al. show that the Malagasy ancestral Asian population was isolated for more than 1,000 years. This isolation ended around 1,000 years BP by admixture with a small African population. Around this time, there was a rapid demographic expansion growth, which coincides with extensive changes in Madagascar's landscape. [ABSTRACT FROM AUTHOR]

An amendment to this paper has been published and can be accessed via a link at the top of the paper. [ABSTRACT FROM AUTHOR]