Current Theories Research Articles

Asymmetry of the Distribution of Vertical Velocities of the Extratropical Atmosphere in Theory, Models, and Reanalysis

Abstract The vertical velocity distribution in the atmosphere is asymmetric with stronger upward than downward motion. This asymmetry is important for the distribution of precipitation and its extremes and for an effective static stability that has been used to represent the effects of latent heating on extratropical eddies. Idealized GCM simulations show that the asymmetry increases as the climate warms, but current moist dynamical theories based around small-amplitude modes greatly overestimate the increase in asymmetry with warming found in the simulations. Here, we first analyze the changes in asymmetry with warming using numerical inversions of a moist quasigeostrophic omega equation applied to output from the idealized GCM. The inversions show that increases in the asymmetry with warming in the GCM simulations are primarily related to decreases in moist static stability on the left-hand side of the moist omega equation, whereas the dynamical forcing on the right-hand side of the omega equation is unskewed and contributes little to the asymmetry of the vertical velocity distribution. By contrast, increases in asymmetry with warming for small-amplitude modes are related to changes in both moist static stability and dynamical forcing leading to enhanced asymmetry in warm climates. We distill these insights into a toy model of the moist omega equation that is solved for a given moist static stability and wavenumber of the dynamical forcing. In comparison to modal theory, the toy model better reproduces the slow increase of the asymmetry with climate warming in the idealized GCM simulations and over the seasonal cycle from winter to summer in reanalysis. Significance Statement Upward velocities are stronger than downward velocities in the atmosphere, and this asymmetry is important for the distribution of precipitation because precipitation is linked to upward motion. An important and open question is what sets this asymmetry and how much it increases as the climate warms. Past work has shown that current theories greatly overestimate the increase in asymmetry with warming in idealized simulations. In this work, we develop a more complete theory and show that it is able to better reproduce the slow increase of the asymmetry with warming that is found over the seasonal cycle from winter to summer and in idealized simulations of warming climates.

Scripting success: a systematic literature review of the process genre approach for writing in Asian education

The problem and the aim of the study. In the 21st century, the process genre approach has gained prominence among various writing methodologies. Numerous scholars have scrutinized its impact on writing within diverse educational settings. However, the extensive body of research makes it challenging to distil current theories, dependent variables, instruments and teaching methods for writing in Asian education. By doing so, it aims to uncover contemporary theories, effective practices, and relevant pedagogical techniques, contributing valuable insights to enhance writing education in this context. Research methods. The primary methodology employed in this study is the systematic literature review method, renowned for its rigorous approach to gathering, evaluating, and synthesizing existing research. The process initiates with comprehensive data searching across authoritative academic databases renowned for their scholarly rigour and reliability from 2019 to 2023, specifically Scopus, Wiley, Taylor and Francis, Emerald and Sage. A deliberate preference for these databases over more expansive platforms like Google Scholar underscores the commitment to selecting high-quality and peer-reviewed articles. The review process encompasses several stages, commencing with the meticulous screening of titles and abstracts to ascertain alignment with predefined inclusion and exclusion criteria. Subsequently, the selected articles undergo a thorough examination, enabling a nuanced analysis of their content. The culmination of this methodological rigour culminates in a comprehensive report that distils key findings, ultimately contributing substantively to the scholarly discourse in Asian education writing instruction. Results. Within the confines of this systematic literature review, the researchers have successfully identified and meticulously scrutinised a total of nine pertinent theoretical frameworks that are intricately intertwined with the approach to PG writing. Furthermore, it has been ascertained that a total of 19 scholars have employed 12 distinct dependent variables in their respective research endeavours. The analysis conducted in this study has also yielded a comprehensive categorisation of instruments, which encompasses six distinct categories. This categorisation provides valuable insights into the various methodological approaches that have been utilised by scholars in their research on the topic of PG writing. By means of a rigorous examination of pedagogical and compositional methodologies, this synthesis has unveiled overarching foundational principles, encompassing preparation, modelling, planning, joint construction, independent construction, and revision, thereby encapsulating the comprehensive terrain of PG writing research. Conclusion. In summary, this systematic literature review serves as a highly valuable and indispensable tool for forthcoming scholars who are venturing into the realm of research pertaining to PG studies. The comprehensive findings encapsulate a wide range of interconnected theories and frameworks, a multitude of dependent variables examined, a variety of instruments employed, and intricate observations regarding teaching methodologies employed in the domain of PG writing research. The compilation of essential elements presented herein serves as a valuable resource for scholars seeking to engage in PG writing research. It facilitates the seamless identification and addressing of research gaps, while offering a comprehensive overview of the current research trends within this particular domain.

Multithermal apparent damping of slow waves due to strands with a Gaussian temperature distribution

Context. Slow waves in solar coronal loops are strongly damped, but the current theory of damping by thermal conduction cannot explain some observational features. Aims. We investigated the propagation of slow waves in a coronal loop built up from strands of different temperatures. Methods. We considered the loop to have a multithermal, Gaussian temperature distribution. The different propagation speeds in different strands led to a multithermal apparent damping of the wave, similar to observational phase mixing. We used an analytical model to predict the damping length and propagation speed for the slow waves, including in imaging with filter telescopes. Results. We compared the damping length due to this multithermal apparent damping with damping due to thermal conduction and found that the multithermal apparent damping is more important for shorter period slow waves. We quantified the influence of instrument filters on the wave’s propagation speed and damping. This allowed us to compare our analytical theory to forward models of numerical simulations. Conclusions. We find that our analytical model matches the numerical simulations very well. Moreover, we offer an outlook for using the slow wave properties to infer the loop’s thermal properties.

Cultural variability in finger representations / Variabilidad cultural en las representaciones con dedos

Finger representations are used to count or show quantities. How fingers are lifted to count and the type of representation that we use to communicate quantities have been the focus of studies that have aimed at providing evidence of dominant patterns across cultures. In the current study, we go beyond those studies and investigate intracultural variability. Specifically, whether finger counting habits and finger montring patterns are similar in children and adults. To this aim, a total of 3,210 Spaniard participants took part in this study (637 children and 2,573 adults). All of them were assessed regarding handedness, the way in which they counted with their fingers from 1 to 10 (finger counting) and how they show quantities with their fingers (finger montring). The results showed certain consistency; however, there was substantial variability within each group. Findings are interpreted within the context of current theories reinforcing the relevance of finger patterns to support the understanding of the meaning of numbers.

Range expansion is both slower and more variable with rapid evolution across a spatial gradient in temperature.

Rapid evolution in colonising populations can alter our ability to predict future range expansions. Recent theory suggests that the dynamics of replicate range expansions are less variable, and hence more predictable, with increased selection at the expanding range front. Here, we test whether selection from environmental gradients across space produces more consistent range expansion speeds, using the experimental evolution of replicate duckweed populations colonising landscapes with and without a temperature gradient. We found that the range expansion across a temperature gradient was slower on average, with range-front populations displaying higher population densities, and genetic signatures and trait changes consistent with directional selection. Despite this, we found that with a spatial gradient range expansion speed became more variable and less consistent among replicates over time. Our results therefore challenge current theory, highlighting that chance can still shape the genetic response to selection to influence our ability to predict range expansion speeds.

A Single Case Study in Management of Pakshaghat with Ayurveda

In the Sharira, Vata is seen as the controller of all things. Vatavyadhi is the term for the influence of vitiated vata on the Dusyas, which permeate the whole body or a portion of it and give rise to various sorts of illness. One of the significant illnesses that fits this description is pakshaghata, also referred to as hemiplegia. One Vataj Nanatmaja Vyadhi who is regarded as a Mahavatavyadhi is Pakshaghata. There is a correlation between pakshaghata and hemiplegia, a condition caused by a cerebrovascular accident or stroke. Hemiplegia, which results in both mental and physical instability. In the world’s population, there are around 9 instances per 1000 people. A stroke is described as an abrupt onset of vascular mechanism-related neurologic impairment. 15% are initial hemorrhages, and 85% are ischemic. The World Health Organization estimates that 15 million stroke victims globally experience a stroke each year, of whom 5 million die and another 5 million become permanently incapacitated. According to current scientific theory, brain injuries that are too severe for treatment to reverse can result in lifelong neurological impairment. As a result, the prognosis for the illness is dismal, leaving the crippled individual dependent. The current research aims to provide baseline data for student physicians to cope with this terrible condition by identifying the etiopathogenesis, clinical aspects, and therapy of the disease from Ayurvedic classics.

Invisible Policy Brokers: The Political Roles of Interpreters in Educational Policy Negotiations With Language Minoritized Mothers

Educational interpreters are not neutral mediators of messages. In education, they are policy brokers whose translations can reflect their own social identities and often align with larger social power dynamics, including deficit perspectives of racialized multilingual people. In U.S. schools, language minoritized parents have the right to make decisions about their children’s education; yet current theory does not account for their power to shape educational policies—or the political roles of interpreters who represent their negotiations. I propose a theory of interpreters as invisible policy brokers and identity mediators. I employ an approach that centers the questions and agency of newly arrived, predominantly Spanish-speaking mothers in a Midwest school district with growing demographics of language minoritized students.

Finite strain elastic visco-plastic consolidation model for layered soils with vertical drain considering self-weight loading and nonlinear creep

Prefabricated vertical drains (PVDs) combined with vacuum and/or surcharge loading have been widely adopted to improve the strength of soft soils. Precise consolidation analysis is the theoretical basis for the design of preloading method with PVD. Current consolidation theories for layered soils with PVD seldom consider the influence of large strain, nonlinear creep, and self-weight loading simultaneously. This paper, thus, presents a finite strain elastic visco-plastic consolidation model, called RCS-EVP, for radial consolidation of layered soils with PVD. RCS-EVP is developed based on the piecewise-linear method. It takes into account nonlinear creep with limit creep strain, variable boundary conditions, anisotropy of soil hydraulic conductivity, and variable compressibility and hydraulic conductivity during the consolidation under self-weight, time-dependent surcharge and/or vacuum loading. The performance of RCS-EVP is evaluated by comparing with the results from finite element simulations and a laboratory physical model test. The variations of settlement and pore pressure of a soft soil ground improved by vacuum preloading with PVD are estimated using RCS-EVP. The results indicate that RCS-EVP provides good estimates of long-term consolidation of layered soils with PVD under both laboratory and in-situ conditions.

Community mobilisation approaches to preventing adolescent multiple risk behaviour: a realist review

BackgroundAdolescent multiple risk behaviour (MRB) is a global health issue. Most interventions have focused on the proximal causes of adolescent MRB such as peer or family influence, with systematic reviews reporting mixed evidence of effectiveness. There is increasing recognition that community mobilisation approaches could be beneficial for adolescent health. There are gaps in the current literature, theory and implementation that would benefit from a realist approach. We use a theory-driven evidence synthesis to assess how and why community mobilisation interventions work/do not work to prevent adolescent MRB and in what contexts.MethodsThis realist review used a six-stage iterative process, guided by the RAMESES framework. We systematically searched PubMed, MEDLINE, PsycINFO, Web of Science, CINAHL and Sociological s, from their inception to 2021. Studies were screened for relevance to the programme theory, assessed for rigour and included based on a priori criteria. Two independent reviewers selected, screened and extracted data from included studies. A realist logic of analysis was used to develop context-mechanism-outcome configurations that contributed to our programme theory.FindingsWe reviewed 35 documents describing 22 separate community mobilisation intervention studies. Most studies (n = 17) had a quality assessment score of three or four (out of four). We analysed the studies in relation to three middle range theories. To uphold our theory that these interventions work by creating a social environment where adolescents are less likely to engage in MRB, interventions should: (1) embed a framework of guiding principles throughout the community, (2) establish community readiness with population data and (3) ensure a diverse coalition with the support of intervention champions. Mechanisms such as empowerment through coalition ownership over the delivery of the intervention, cohesion across the community and motivation to work collaboratively to improve adolescent health are triggered to achieve social environment shifts. However, certain contexts (e.g. limited funding) restrict intervention success as these mechanisms are not fired.ConclusionsFor community mobilisation interventions to reduce adolescent MRB, the coalitions within them must seek to alter the social environment in which these behaviours occur. Mechanisms including empowerment, cohesion and motivation lead to this shift, but only under certain contexts.Systematic review registrationPROSPERO CRD42020205342

Resonance theory of vibrational polariton chemistry at the normal incidence

Abstract We present a theory that explains the resonance effect of the vibrational strong coupling (VSC) modified reaction rate constant at the normal incidence of a Fabry–Pérot (FP) cavity. This analytic theory is based on a mechanistic hypothesis that cavity modes promote the transition from the ground state to the vibrational excited state of the reactant, which is the rate-limiting step of the reaction. This mechanism for a single molecule coupled to a single-mode cavity has been confirmed by numerically exact simulations in our recent work in [J. Chem. Phys. 159, 084104 (2023)]. Using Fermi’s golden rule (FGR), we formulate this rate constant for many molecules coupled to many cavity modes inside a FP microcavity. The theory provides a possible explanation for the resonance condition of the observed VSC effect and a plausible explanation of why only at the normal incident angle there is the resonance effect, whereas, for an oblique incidence, there is no apparent VSC effect for the rate constant even though both cases generate Rabi splitting and forming polariton states. On the other hand, the current theory cannot explain the collective effect when a large number of molecules are collectively coupled to the cavity, and future work is required to build a complete microscopic theory to explain all observed phenomena in VSC.

Optogenetic stimulation of the locus coeruleus enhances appetitive extinction in rats

Extinction is a specific example of learning where a previously reinforced stimulus or response is no longer reinforced, and the previously learned behaviour is no longer necessary and must be modified. Current theories suggest extinction is not the erasure of the original learning but involves new learning that acts to suppress the original behaviour. Evidence for this can be found when the original behaviour recovers following the passage of time (spontaneous recovery) or reintroduction of the reinforcement (i.e. reinstatement). Recent studies have shown that pharmacological manipulation of noradrenaline (NA) or its receptors can influence appetitive extinction; however, the role and source of endogenous NA in these effects are unknown. Here, we examined the role of the locus coeruleus (LC) in appetitive extinction. Specifically, we tested whether optogenetic stimulation of LC neurons during extinction of a food-seeking behaviour would enhance extinction evidenced by reduced spontaneous recovery in future tests. LC stimulation during extinction trials did not change the rate of extinction but did serve to reduce subsequent spontaneous recovery, suggesting that stimulation of the LC can augment reward-related extinction. Optogenetic inhibition of the LC during extinction trials reduced responding during the trials where it was applied, but no long-lasting changes in the retention of extinction were observed. Since not all LC cells expressed halorhodopsin, it is possible that more complete LC inhibition or pathway-specific targeting would be more effective at suppressing extinction learning. These results provide further insight into the neural basis of appetitive extinction, and in particular the role of the LC. A deeper understanding of the physiological bases of extinction can aid development of more effective extinction-based therapies.

Optogenetic stimulation of the locus coeruleus enhances appetitive extinction in rats.

Extinction is a specific example of learning where a previously reinforced stimulus or response is no longer reinforced, and the previously learned behaviour is no longer necessary and must be modified. Current theories suggest extinction is not the erasure of the original learning but involves new learning that acts to suppress the original behaviour. Evidence for this can be found when the original behaviour recovers following the passage of time (spontaneous recovery) or reintroduction of the reinforcement (i.e. reinstatement). Recent studies have shown that pharmacological manipulation of noradrenaline (NA) or its receptors can influence appetitive extinction; however, the role and source of endogenous NA in these effects are unknown. Here, we examined the role of the locus coeruleus (LC) in appetitive extinction. Specifically, we tested whether optogenetic stimulation of LC neurons during extinction of a food-seeking behaviour would enhance extinction evidenced by reduced spontaneous recovery in future tests. LC stimulation during extinction trials did not change the rate of extinction but did serve to reduce subsequent spontaneous recovery, suggesting that stimulation of the LC can augment reward-related extinction. Optogenetic inhibition of the LC during extinction trials reduced responding during the trials where it was applied, but no long-lasting changes in the retention of extinction were observed. Since not all LC cells expressed halorhodopsin, it is possible that more complete LC inhibition or pathway-specific targeting would be more effective at suppressing extinction learning. These results provide further insight into the neural basis of appetitive extinction, and in particular the role of the LC. A deeper understanding of the physiological bases of extinction can aid development of more effective extinction-based therapies.

Cognitive Illusion, Lucid Dreaming, and the Psychology of Metaphor in Tibetan Buddhist Dzogchen Contemplative Practices

A classic set of eight similes of illusion (sgyu ma’i dpe brgyad) are employed recurrently throughout Indian and Tibetan Buddhist literature to illustrate the operations of cognition, its correlative perceptions, and experiences that emerge. To illustrate a Buddhist psychology of metaphor, the fourteenth century Tibetan scholar and synthesizer of the Dzogchen (rdzogs chen) or Great Perfection system, Longchen Rabjam Drimé Ödzer (1308-1363), composed his poetic text, Being at Ease with Illusion. This work on illusion is the third volume in Longchenpa’s Trilogy of Being at Ease (Ngal gso skor gsum) in which he presents a series of Dzogchen instructions on how to settle totally at ease. To complement each volume in his trilogy, Longchenpa composed auxiliary contemplative guidance instructions on their meaning (don khrid). This article contextualizes Longchenpa’s meditation manual on Being at Ease with Illusion, a translation of which is included in the appendix. Special attention is given to Dzogchen practices of lucid dreaming and working with cognitive illusions to spotlight underlying contemplative dynamics and correlative psychological effects. To analogically map these Tibetan language instructions in translation, this article interprets Buddhist psychological understandings of cognitive and perceptual processes in dialogue with current theories in the cognitive sciences.

The path from root input to mineral-associated soil carbon is dictated by habitat-specific microbial traits and soil moisture

Soil microorganisms help transform plant inputs into mineral-associated soil organic carbon (SOC) – the largest and slowest-cycling pool of organic carbon on land. However, the microbial traits that influence this process are widely debated. While current theory and biogeochemical models have settled on carbon-use efficiency (CUE) and growth rate as positive predictors of mineral-associated SOC, empirical tests are sparse, with contradictory observations. Using 13C-labeling of an annual grass (Avena barbata) under two moisture regimes, we found that microbial traits associated with formation of 13C-mineral-associated SOC varied by soil habitat, as did active microbial taxa and SOC chemical composition. In the rhizosphere, bacterial-dominated communities with fast growth, high biomass, and high extracellular polymeric substance (EPS) production were positively associated with 13C-mineral-associated SOC. In contrast, the detritusphere held communities dominated by fungi and more filamentous bacteria, and with greater exoenzyme activity; there, 13C-mineral-associated SOC was associated with slower microbial growth and lower microbial biomass. CUE was a negative predictor of 13C-mineral-associated SOC in both habitats. Using 13C-quantitative stable isotope probing, we found that the majority of 13C assimilation in the rhizosphere and detritusphere at week 12 of the experiment was performed by very few bacterial and fungal taxa (3–5% of the total taxa that assimilated 13C). Several complementary chemical analyses (13C-NMR, FTICR-MS, and STXM-NEXAFS) suggested that SOC in the rhizosphere had a more oxidized chemical signature, while SOC in the detritusphere had a less oxidized, more lignin-like chemical signature. Our findings challenge current theory by demonstrating that microbial traits linked with mineral-associated SOC are not universal, but vary with soil habitat and moisture conditions, and are shaped by a small number of active taxa. Emerging SOC models that explicitly reflect these interactions may better predict SOC storage, since climate change causes shifts in soil moisture regimes and the ratio of living versus decaying roots.

A new conceptual model for anorexia nervosa: A role for connective tissue?

The etiology of anorexia nervosa (AN) remains to be fully elucidated, and current theories also fail to account for the direct effect of starvation on the health of the organs and tissues, specifically the connective tissue present in most organs of the body. Individuals with hereditary disorders of connective tissue manifest with clinical symptoms that overlap with AN, as the abnormal connective tissue also contributes to many of the other extra-articular manifestations of these hereditary disorders. This article hypothesizes that a similar pathophysiology may also contribute to the clinical presentation of AN. Therefore, a better understanding is needed to elucidate: (1) the relationship between abnormal connective tissue and AN, (2) the impact of starvation toward the development of abnormal connective tissue and how this manifests clinically, (3) the etiology of autonomic nervous system changes contributing to the dysautonomia in AN, and (4) how the sensory signals sent from potentially abnormal connective tissue to the central nervous system impact interoception in AN. A conceptual model incorporating abnormal connective tissue is provided. PUBLIC SIGNIFICANCE: The etiology of AN remains poorly understood and current theories fail to account for the direct impact of starvation on the health of the organs and tissues of the body. There is significant clinical overlap between AN and hereditary connective tissue disorders. This paper attempts to provide a new conceptual model for AN in which abnormal connective tissue contributes to the underlying pathogenesis.

Astringency perception in a red wine context – a review

Astringency is not considered one of the modern gustatory tastes. The understanding of astringency perception has evolved considerably over the past eighty years, but the exact mechanism is still undefined. This review aims to identify the current theory of astringency perception in the context of red wine. While astringency perception is a complicated mechanism that is not yet well understood, much research has focused on it. The studies discussed up to now have been done using red wine or wine-derived polyphenols. In a red wine context, astringency is driven by polyphenol concentration, galloylation and degree of polymerisation. Compounds that do not bind protein but are still strong astringent agonists are present in red wine. Among them, the role of polysaccharides and oligosaccharides is not clear, as these compounds are difficult to purify in quantities large enough for use in sensory studies. The literature strongly points to astringency being a compound perception. There is a stage of early protein binding, possibly as a “neutralising” effect for small amounts of dietary tannins with little actual perception, building into a more pronounced effect as tannin concentrations increase. A loss of lubrication in the oral cavity might announce the overpowering salivary protein capacity resulting from tannin concentrations, with direct detection of some astringent compounds once protein in the salivary fluid and the salivary pellicle are depleted.

Changes in pupil size track self-control failure.

People are more likely to perform poorly on a self-control task following a previous task requiring self-control (ego-depletion), but the mechanism for this effect remains unclear. We used pupillometry to test the role of attentional effort in ego-depletion. We hypothesized that an elevated pupil diameter (PD)-a common physiological measure of effort-during an initial task requiring self-control should be negatively associated with performance on a subsequent control task. To test this hypothesis, participants were first assigned to either a high- or low-demand attention task (manipulation; a standard ego-depletion paradigm), after which all participants completed the same Stroop task. We then separately extracted both sustained (low-frequency) and phasic (high-frequency) changes in PD from both tasks to evaluate possible associations with lapses of cognitive control on the Stroop task. We first show that in the initial task, sustained PD was larger among participants who were assigned to the demanding attention condition. Furthermore, ego-depletion effects were serially mediated by PD: an elevated PD response emerged rapidly among the experimental group during the manipulation, persisted as an elevated baseline response during the Stroop task, and predicted worse accuracy on incongruent trials, revealing a potential indirect pathway to ego-depletion via sustained attention. Secondary analyses revealed another, independent and direct pathway via high levels of transient attentional control: participants who exhibited large phasic responses during the manipulation tended to perform worse on the subsequent Stroop task. We conclude by exploring the neuroscientific implications of these results within the context of current theories of self-control.

Disease: An ill-founded concept at odds with the principle of patient-centred medicine.

Despite the at least decades long record of philosophical recognition and interest, the intricacy of the deceptively familiar appearing concepts of 'disease', 'disorder', 'disability', and so forth, has only recently begun showing itself with clarity in the popular discourse wherein its newly emerging prominence stems from the liberties and restrictions contingent upon it. Whether a person is deemed to be afflicted by a disease or a disorder governs their ability to access health care, be it free at the point of use or provided by an insurer; it also influences the treatment of individuals by the judicial system and employers; it even affects one's own perception of self. All existing philosophical definitions of disease struggle with coherency, causing much confusion and strife, and leading to inconsistencies in real-world practice. Hence, there is a real need for an alternative. In the present article I analyse the variety of contemporary views of disease, showing them all to be inadequate and lacking in firm philosophical foundations, and failing to meet the desideratum of patient-driven care. Illuminated by the insights emanating from the said analysis, I introduce a novel approach with firm ethical foundations, which foundations are rooted in sentience, that is the subjective experience of sentient beings. I argue that the notion of disease is at best superfluous, and likely even harmful in the provision of compassionate and patient-centred care. Using a series of presently contentious cases illustrate the power of the proposed framework which is capable of providing actionable and humane solutions to problems that leave the current theories confounded.

Rethinking identity theory in light of the in-Christ identity in the African context

In social identity theory, the in-Christ identity is understood as primarily a socially directed process in which people categorise themselves relative to other groups. Intergroup behaviour would cause them to discriminate against the so-called ‘outgroup’, favouring the so-called ‘ingroup’. Although social identity complexity theory has moved beyond single ingroup-outgroup categorisation, it is a question if social identity theories can fully account for the in-Christ identity, especially within an African context. In African religious identity, identity is linked to both the community and the ruling deities, which are perceived to be real entities that intervene in human affairs and identity, presupposing a supernaturalistic epistemology.Contribution: In this contribution, the naturalistic epistemological underpinnings of social identity theories are reconsidered in light of a supernatural aspect that is argued to be constitutive of the 1st century in-Christ identity as well as the African Christian identity. Amid current approaches to the in-Christ identity, which is mainly a Pauline concept, some of the main Pauline texts that have bearing on the in-Christ identity are revisited in light of current theories and epistemologies on identity.

Effects of a homework implementation method (MITCA) on self-regulation of learning

AbstractThe MITCA method (Homework Implementation Method) was developed with the purpose of turning homework into an educational resource capable of improving students' self-regulated learning and school engagement. In this paper, following current theoretical frameworks, we evaluate the effect of the MITCA method on students' self-regulated learning. In general, MITCA includes the assignment of diverse, concrete and valued by the students tasks which are completed on a weekly basis. We analyze the differences in self-regulation strategies in a sample of 533 fifth (n = 270) and sixth graders (n = 262) with an age range of 10–12 years old (47.5% boys and 52.5% girls), who were about equally distributed to an experimental and a control group. Trained teachers used MITCA to prescribe homework in the experimental group for twelve weeks. The students of the experimental group reported significantly higher time management and environmental management. However, there were no significant differences observed in other aspects of self-regulation, and the experimental group did not perceive a deficit in these areas. Our results indicate the effectiveness of MITCA on students’ self-regulation of learning and discussed in light of current theories and evidence in the field.