Joint Action Research Articles

Motor coordination induces social identity-A novel paradigm for the investigation of the group performance-identity link.

Joint action theorizing implies that any coordinated behaviour that induces co-representation with a partner should increase social identification, especially when the associated actions require a high degree of coordination and are experienced as being performed effectively. The current research provides a first test of this new theoretical prediction for complementary (rather than synchronous) joint actions. In each of two pre-registered experiments establishing a novel paradigm, participants performed a digital joystick task with a joint performance goal with three different partners. The task varied in coordination requirements across partners. In Experiment 1, results showed that when task segments were discrete between partners, they identified less as a group than when they had to coordinate their behaviour. Surprisingly, although constant coordination increased co-representation relative to intermittent coordination, it did not correspondingly increase social identification. However, performance correlated positively with identification; as performance was worse when participants had to coordinate, this may explain the results. Experiment 2 showed that performance is causally linked to identification when coordination is necessary. Taken together, our results suggest that experiencing effective coordination leads to greater social identification. In general, paradigms capable of examining the perceptual and motor aspects of collective behaviour may offer a new perspective on social identification in general and the performance-identification link in particular.

A context-driven approach through stakeholder engagement to introduce a digital emergency obstetric and newborn care register into routine obstetric health care services in Bangladesh.

Emergency obstetric and newborn care (EmONC) in Bangladesh focusses on maternal health, whereby it addresses childbirth and postpartum complications to ensure women's health and well-being. It was transitioned to a digital platform to overcome challenges with the paper-based EmONC register and we conducted implementation research to assess the outcome. Here we outline the stakeholder engagement process integral to the implementation research process. We adopted a four-step stakeholder engagement model based on the identification, sensitisation, involvement, and engagement of stakeholders. The approach was informed by previous experience, desk reviews, and expert consultations to ensure comprehensive engagement with stakeholders at multiple levels. Led by the Maternal Health Programme of the Government of Bangladesh, we involved high-power and high-interest stakeholders in developing a joint action plan for digitisation of the paper-based EmONC register. Finally, we demonstrated this digital EmONC register in real-life settings to stakeholders at different levels. The successful demonstration process fostered government ownership and collaboration with multiple stakeholders, while laying the foundation for scalability and sustainability. Nevertheless, our experience highlighted that the stakeholder engagement process is context-driven, time-consuming, resource-intensive, iterative, and dynamic, and it requires involving stakeholders with varied expertise. Effective strategic planning, facilitation, and the allocation of sufficient time and resources are essential components for successful stakeholder engagement. Our experience demonstrates the potential of adopting the 'identification, sensitisation, involvement, and engagement' stakeholder engagement model. Success in implementing this model in diverse settings depends on leveraging knowledge gained during implementation, maintaining robust communication with stakeholders, and harnessing the patience and determination of the facilitating organisation.

An Analytical Approach for Naturalistic Cooperative and Competitive EEG-Hyperscanning Data: A Proof-of-Concept Study

Investigating the neural mechanisms underlying both cooperative and competitive joint actions may have a wide impact in many social contexts of human daily life. An effective pipeline of analysis for hyperscanning data recorded in a naturalistic context with a cooperative and competitive motor task has been missing. We propose an analytical pipeline for this type of joint action data, which was validated on electroencephalographic (EEG) signals recorded in a proof-of-concept study on two dyads playing cooperative and competitive table tennis. Functional connectivity maps were reconstructed using the corrected imaginary part of the phase locking value (ciPLV), an algorithm suitable in case of EEG signals recorded during turn-based competitive joint actions. Hyperbrain, within-, and between-brain functional connectivity maps were calculated in three frequency bands (i.e., theta, alpha, and beta) relevant during complex motor task execution and were characterized with graph theoretical measures and a clustering approach. The results of the proof-of-concept study are in line with recent findings on the main features of the functional networks sustaining cooperation and competition, hence demonstrating that the proposed pipeline is promising tool for the analysis of joint action EEG data recorded during cooperation and competition using a turn-based motor task.

Cybersecurity policy framework requirements for the establishment of highly interoperable and interconnected health data spaces

This paper examines cybersecurity policy framework requirements for establishing highly interoperable and interconnected health data spaces, with a focus on the European Health Data Space (EHDS) and its corresponding joint action Toward European Health Data Space (TEHDAS). It explores the challenges of ensuring data security within an increasingly digital and collaborative healthcare environment, emphasizing the need for robust policy management to protect sensitive health information across diverse healthcare systems and supply chains. Through an analysis of use cases and held expert workshops, the study identifies key requirements for enhancing cybersecurity measures, fostering cross-border data exchange, and ensuring compliance with regulatory standards. It illustrates the practical implications of cybersecurity policies in a real-world scenario, demonstrating how they can be applied to enhance data security and policy effectiveness.

Children with palliative care needs – the landscape of the nordic countries

BackgroundTo strengthen palliative care for children in the Nordic countries, an updated status of current needs, resources, clinical services, education, and research is necessary to align and consolidate future research. A Nordic research collaboration initiative for children with palliative care needs was assembled in 2023. Building on this initiative, this paper presents an overview of pediatric palliative care (PPC) in the Nordic countries’ (a) population characteristics, (b) care models and setting of care, (c) education and training, and (d) research.MethodsThe Nordic initiative researchers collaboratively gathered and assessed available data on the characteristics of PPC within Denmark, Finland, Greenland, Iceland, Norway, the Faroe Islands, Sweden, and Åland. Data were compiled in a matrix with population characteristics, models- and setting of care, education and training, and areas of research in a Nordic context. The findings are narratively and descriptively presented, providing an overview of Nordic PPC.ResultsIn total, the Nordic child population comprises around six million children (0–19 years), of which about 41.200 are estimated to be living with a life-limiting and/or life-threatening condition. Healthcare services are provided through various care models, ranging from specialized care to homecare settings. Overall, there remain few opportunities for education and training with some exceptions. Also, Nordic research within PPC has been shown to be a growing field although much remains to be done.ConclusionThis overview is the first outline of the current PPC in Nordic countries. Although some differences remain important to acknowledge, overall, the strengths and challenges faced within PPC in the Nordic countries are comparable and call for joint action to increase evidence, services, and education to better serve the children, families, and healthcare personnel within PPC. Despite the varying structural premises for PPC, research endeavors aiming to provide evidence in this field seem increasing, timely and relevant for the Nordic countries, as well as the international context.

The macroscopic and microscopic fatigue failure mechanisms of high-temperature thermally-damaged granite under cyclic impact loading

The rock surrounding wells for developing geothermal energy are in an extreme environment with high temperature and long-term dynamic disturbance. To study the influences of different temperatures and dynamic disturbances on the damage, mechanical properties, and fatigue failure mechanism of rocks, a series of microscopic thermal damage analysis and dynamic cyclic impact tests were conducted on granite specimens treated at 25 ∼ 900 °C. Results show that after being thermally treated to different extents, granite specimens are weakened in terms of the dynamic strength and deformation resistance under cyclic impact loading. As the temperature rises, the number of impacts bearable by specimens before failure decreases accordingly. Under the joint action of temperature and strain rate, 450 °C is found to be the threshold temperature for the significant reduction of dynamic strength of the rock. Under action of temperature and strain rate, the proportion of dissipated energy gradually reduces with rising temperature. Moreover, the dynamic failure mode of rock specimens at high temperatures gradually changes from splitting failure to crushing failure, the fractal dimension gradually increases, and the cumulative dissipated energy density decreases. Finally, the deterioration degree of elastic modulus was adopted to describe the progressive damage evolution of thermally-treated granite under cyclic impact loading. Furthermore, the fracture morphologies of rock specimens after failure were analyzed from the microscopic perspective to reveal the macroscopic and microscopic fatigue failure mechanisms of the rock under the coupling of temperature and strain rate.

Co-perceiving: Bringing the social into perception.

Humans and other animals possess the remarkable ability to effectively navigate a shared perceptual environment by discerning which objects and spaces are perceived by others and which remain private to themselves. Traditionally, this capacity has been encapsulated under the umbrella of joint attention or joint action. In this comprehensive review, we advocate for a broader and more mechanistic understanding of this phenomenon, termed co-perception. Co-perception encompasses the sensitivity to the perceptual engagement of others and the capability to differentiate between objects perceived privately and those perceived commonly with others. It represents a distinct concept from mere simultaneous individual perception. Moreover, discerning between private and common objects doesn't necessitate intricate mind-reading abilities or mutual coordination. The act of perceiving objects as either private or common provides a comprehensive account for social scenarios where individuals simply share the same context or may even engage in competition. This conceptual framework encourages a re-examination of classical paradigms that demonstrate social influences on perception. Furthermore, it suggests that the impacts of shared experiences extend beyond affective responses, also influencing perceptual processes. This article is categorized under: Psychology > Attention Philosophy > Foundations of Cognitive Science Philosophy > Psychological Capacities.

Revealing the coupling of multiple corrosion behaviors in the corrosion process of titanium-steel composites in marine environment

In this study, the corrosion behavior and corrosion mechanism of titanium-steel composite plate was studied through immersion tests in simulated marine solution. The result shows that the corrosion behavior of titanium-steel composite plate is coordinated by various corrosion behaviors in the near interface area and the far interface area. The corrosion behavior of carbon steel matrix in the far interface area of titanium-steel composite plate in simulated solution is the same as that of carbon steel, because it is far from the interface and is not accelerated by galvanic effect. The corrosion reactions started with localized corrosion induced by inclusions and the diffusion of aggressive ions, and then changed from localized to uniform corrosion. The carbon steel at the interface is accelerated by galvanic effect in the early stage, and the tiny defects at the interface can also be used as the basic point of corrosion initiation. In the later stage, the corrosion at the interface reached a certain level, and the corrosion at the interface turned into the joint action of galvanic corrosion and crevice corrosion. In the whole corrosion process, corrosion is more likely to occur due to stress concentration at the interface. Under the combined action of different corrosion behaviors, the corrosion rate at the interface of titanium-steel composite plate is faster than that at the far interface area.

Rural Women’s Response to Climate Change: An Exploratory Study of Women’s Grassroot Network in Odisha

The emergence of Feminist Political Ecological (FPE) position allows to rethink about social institutions like Self Help Groups (SHGs) as foundations for building green movements through everyday practice. The collective voice that has helped them emerge economically self-sufficient is reflected in their decision making, when the larger cause of climate change or environmental decision-making are involved. It is time that their actions permeating the ecology and environment gains credence and such coalitions provide ground as movements for achieving the larger collective agenda.   Idea of SHGs as social capital helped the marginalized women create different ‘gendered subjectivities’ and endowed them with a collective voice, be it conservation of their own ecological settings or confronting the social system. The case of Climate Credit Pilot Project and/or conservation of indigenous seed varieties in remote villages of Odisha bear testimony to women’s consciousness regarding climate mitigation initiatives and the meaningful actions associated with environmental justice. Such interventions show that the embedment of economic, social and cultural values of SHG groups align with their instinct for attaining a larger goal of environment protection through household and community level actions.   The gendered subjectivities including increased social consciousness among women, better access to new information, up-skilling has made them better and enlightened decision makers. The practice of joint or consensual action by SHG collectives enable them to address multi-scalar issues like climate change. However, the broader agenda of social and economic empowerment has to align with their decision making power relating to their immediate ecology and environment. In this context, the proposed study will probe emerging social consciousness of women on climate change issues, while examining their larger environmental responsibility in local situation, wherein the women remain at the receiving end. This is a field-based exploratory study of women from subsistence and indigenous communities of three districts in Odisha which interrogates the role of SHGs in creating a social space for women to engage with the question of environmental decision making. The study intends to analyse the field data in relation to environmental rights, responsibilities and knowledge of rural and Adivasi women within the institution of SHGs. It aims to formulate the concept, i.e., can SHGs be seen as co-linear spaces which needs to be strengthened as bearers of green movements at the local level as a response to the climate crisis.

A surgical technique for individual control of the muscles of the rabbit lower hindlimb.

Little is known regarding the precise muscle, bone and joint actions resulting from individual and simultaneous muscle activation(s) of the lower limb. An in situ experimental approach is described herein to control the muscles of the rabbit lower hindlimb, including the medial and lateral gastrocnemius, soleus, plantaris and tibialis anterior. The muscles were stimulated using nerve-cuff electrodes placed around the innervating nerves of each muscle. Animals were fixed in a stereotactic frame with the ankle angle set at 90deg. To demonstrate the efficacy of the experimental technique, isometric plantarflexion torque was measured at the 90deg ankle joint angle at a stimulation frequency of 100, 60 and 30 Hz. Individual muscle torque and the torque produced during simultaneous activation of all plantarflexor muscles are presented for four animals. These results demonstrate that the experimental approach was reliable, with insignificant variation in torque between repeated contractions. The experimental approach described herein provides the potential for measuring a diverse array of muscle properties, which is important to improve our understanding of musculoskeletal biomechanics.

User performance and engagement in multi-user gaming Environments: An experimental investigation through the group eye tracking (GET) paradigm

This study explores user performance and engagement in a multi-user gaming environment, using the Group Eye Tracking (GET) paradigm. Through a balloon-popping task, we investigate the interplay between individual and collective gaze behaviors under various social scenarios and gaze cue availabilities. Participants engaged in the game individually, collaboratively, and competitively, with or without access to peers’ gaze cues. Our findings show that reaction times vary significantly depending on the social context and the availability of gaze cues. Playing in groups generally increased engagement, flow, and positive experiences but also introduced more challenges and negative emotions, especially due to the competitive and coordination demands of group play. Introducing gaze cues notably affected the players by enhancing their immersion and skill perception while evoking mixed emotional reactions. Gaze reaction times systematically increased in group scenarios with gaze cues, underscoring the attentional dichotomy between target and gaze cue stimuli. We contrast these results with existing theories on joint action, providing insights into the complex social and perceptual dynamics in gaming. This study demonstrates how multi-user eye tracking can offer new possibilities in gaming, broadening our understanding of joint actions and presenting potential to enhance interactions in digital environments.

The functional distance-based approach: An application on long-term Metropolitan Development

Metropolitan development is a complex phenomenon depending on the joint action of multiple socioeconomic and territorial factors, which are generally quantified through indicators interacting across spatial and temporal scales. A comprehensive understanding of metropolitan development requires a detailed examination of the dependence structure within the development trajectories of both urban and suburban areas. Multidimensionality, non-linearity, and evolutionary components at the base of metropolitan development should be jointly considered when investigating the socioeconomic mechanisms underlying the long-term expansion of cities and their surrounding regions. In this multidimensional perspective, the Functional Data Analysis approach enables the simultaneous investigation of the level and evolution over time of multiple socioeconomic processes through summary functional measures, such as the modified hypograph index and the weighted integrated first derivative. Starting from these tools, a functional distance-based approach is proposed to study the relationship between urban and suburban areas from a twofold perspective: focusing on the entire set of metropolitan development indicators, and considering each dimension individually. This approach contributes to overpass the limitations of standard econometric approaches offering a multivariate measure of change in local systems experiencing complex development trajectories. The proposal is illustrated via a simulation study and a real data set.

Decrypting resilience: The spatiotemporal evolution and driving factors of ecological resilience in the Yangtze River Delta Urban Agglomeration

Can a system be reconstructed for greater resilience to complex disturbances? We provide answers to this question by demystifying ecological resilience (ER). We innovatively constructed a “resistant, absorptive, and restorative capacity” framework based on evolutionary resilience theory, the Dagum Gini coefficient, and the panel Tobit model to systematically determine what ER is and how to enhance it. The results indicate that during 2005–2021, minimal longitudinal changes with significant horizontal variations occurred in the ER of the Yangtze River Delta Urban Agglomeration (YRDUA). ER showed an “east strong, west weak” pattern, with average values from 0.124 to 0.665. The ER of Southern Jiangsu ranked high, while that of the seven cities in Anhui ranked low. The inequity of ER showed an initial increase followed by a fluctuating decreasing trend; the overall average Gini coefficient was 0.262. The intra-regional differences showed Zhejiang > Jiangsu > Anhui, with a contribution rate of 55.46%. Green patents and the proportion of cultivated land were the most significant positive and negative driving forces for ER, respectively. Additionally, when these factors worked together, they increased the explanatory power of ER, primarily via nonlinear enhancement. Urbanization rate and green patents enhanced the joint action of driving forces. The contribution of our study is to compensate for the lack of theoretical traceability in previous studies and provide an inspiring analytical framework for ER.

Joint Action of Trichoderma atroviride and a Vegetal Derived-Protein Hydrolysate Improves Performances of Woodland Strawberry in Italy

Woodland strawberry (Fragaria vesca L.) is an underutilized plant species that could benefit from the use of biostimulants to improve crop productivity and fruit quality. The scope of the present study was to appraise the influence of two biostimulants (Trichoderma atroviride and plant protein hydrolysate)—used either alone or combined—on the plant performance and economic profitability of two woodland strawberry genotypes (‘Alpine’ and ‘Regina delle Valli’). Overall, data showed that ‘Alpine’ had the highest productive performances, whereas ‘Regina delle Valli’ revealed the highest fruit qualitative traits. T. atroviride inoculation and V-PH application significantly boosted plant marketable yield (+20.5% for T. atroviride and +12.9% for V-PH), total sugars (+1.9% for Trichoderma and +1.4% for V-PH) and anthocyanins (+14.1% for T. atroviride and +9.8% for V-PH) compared to non-treated plants. Plants supplied with both biostimulants had a higher marketable yield (+34.8%), mean fruit weight (+6.0%), fruit dry matter (+13.8%), total sugars (+3.5%), ascorbic acid (+12.7%), flavonoid (+26.3%) and anthocyanins (+29.9%) compared to non-treated plants. Furthermore, our study revealed that the highest fruit polyphenol concentration was recorded in both genotypes treated with the combination of biostimulants and in ‘Regina delle Valli’ sprayed with V-PH, whereas the highest antioxidant activity was found in ‘Regina delle Valli’ fruit when plants were supplied with both biostimulants. Our study pointed out that the application of microbial and non-microbial biostimulants, especially in combination, might be a useful strategy for improving the performances of underutilized species and, therefore, encouraging their cultivation, valorization and economic profitability (+6208.3 EUR /ha when plants were exposed to both biostimulants).

Mapping Method of Human Arm Motion Based on Surface Electromyography Signals.

This paper investigates a method for precise mapping of human arm movements using sEMG signals. A multi-channel approach captures the sEMG signals, which, combined with the accurately calculated joint angles from an Inertial Measurement Unit, allows for action recognition and mapping through deep learning algorithms. Firstly, signal acquisition and processing were carried out, which involved acquiring data from various movements (hand gestures, single-degree-of-freedom joint movements, and continuous joint actions) and sensor placement. Then, interference signals were filtered out through filters, and the signals were preprocessed using normalization and moving averages to obtain sEMG signals with obvious features. Additionally, this paper constructs a hybrid network model, combining Convolutional Neural Networks and Artificial Neural Networks, and employs a multi-feature fusion algorithm to enhance the accuracy of gesture recognition. Furthermore, a nonlinear fitting between sEMG signals and joint angles was established based on a backpropagation neural network, incorporating momentum term and adaptive learning rate adjustments. Finally, based on the gesture recognition and joint angle prediction model, prosthetic arm control experiments were conducted, achieving highly accurate arm movement prediction and execution. This paper not only validates the potential application of sEMG signals in the precise control of robotic arms but also lays a solid foundation for the development of more intuitive and responsive prostheses and assistive devices.

The self-reinforcing nature of joint action

AbstractShared intention normally leads to joint action. It does this, it is commonly said, only because it is a characteristically stable phenomenon, a phenomenon that tends to persist from the time it is formed until the time it is fulfilled. However, the issue of what the stability of shared intention comes down to remains largely undertheorized. My aim in this paper is to remedy this shortcoming. I argue that shared intention is a source of moral and epistemic reasons, that responsiveness to such reasons on the part of each individual reinforces her own relevant attitudes, and that this enhances the stability of the shared intention as a whole. We thus discover an important self-reinforcing and stability-enhancing mechanism at the heart of shared intention and action. It follows from this proposal that the psychological commitment that an individual exhibits in joint action is normally a function not only of her own participatory intention, as often maintained, but also of her endorsement of the reasons created by her group’s shared intention to so act.

Viruses, resilience, and their health implications

Humanity is living a stage where different types of viruses have appeared, implying many problems at a social level, which is called upon to adapt to these adversities, so as not to have more relevant conditions than those that occurred with the appearance of COVID-19. The objective is Know the implications of these for human health and how to be resilient to them. The bibliographic review and the inductive-deductive method were used. The result was that humanity must reflect on joint actions to address the viral threat and draw up policies that help adapt to the change caused by them.

Excitatory/inhibitory motor balance reflects individual differences during joint action coordination.

Joint action (JA) is a continuous process of motor co-regulation based on the integration of contextual (top-down) and kinematic (bottom-up) cues from partners. The fine equilibrium between excitation and inhibition in sensorimotor circuits is, thus, central to such a dynamic process of action selection and execution. In a bimanual task adapted to become a unimanual JA task, the participant held a bottle (JA), while a confederate had to reach and unscrew either that bottle or another stabilized by a mechanical clamp (No_JA). Prior knowledge was manipulated in each trial such that the participant knew (K) or not (No_K) the target bottle in advance. Online transcranial magnetic stimulation (TMS) was administered at action-relevant landmarks to explore corticospinal excitability (CSE) and inhibition (cortical silent period [cSP]). CSE was modulated early on before the action started if prior information was available. In contrast, cSP modulation emerged later during the reaching action, regardless of prior information. These two indexes could thus reflect the concurrent elaboration of contextual priors (top-down) and the online sampling of partner's kinematic cues (bottom-up). Furthermore, participants selected either one of two possible behavioural strategies, preferring early or late force exertion on the bottle. One translates into a reduced risk of motor coordination failure and the other into reduced metabolic expenditure. Each strategy was characterised by a specific excitatory/inhibitory profile. In conclusion, the study of excitatory/inhibitory balance paves the way for the neurophysiological determination of individual differences in the combination of top-down and bottom-up processing during JA coordination.

Motor-related cortical oscillations distinguish one’s own from a partner’s contributions to a joint action

The ability to distinguish between one’s own and others’ actions is a requirement for successful joint action. Such a distinction might be supported by dissociable motor activity underlying each partner’s individual contributions to the joint action. However, little research has directly compared motor activity associated with one’s own vs. others’ actions during joint action. The current study investigated whether motor-related cortical oscillations distinguish between self- and partner-produced actions when partners take turns producing taps to meet a joint timing goal. Across two experiments, the degree of beta suppression differentiated one’s own from a partner’s actions, with more suppression occurring during one’s own actions than during a partner’s actions. Self-partner differences in mu suppression were also evident, particularly when partners produced actions in succession. Increased beta suppression was also observed during partners’ actions when they were followed by one’s own actions, suggesting that the coordination demands imposed by the joint action could affect the pattern of beta reactivity during a turn-taking joint action. Together, these findings demonstrate that dynamic patterns of motor activity underpin successful joint action and that periods of distinct motor activity are associated with one’s own contributions to a joint action.

A short-term rodent model for non-alcoholic steatohepatitis induced by a high-fat diet and carbon tetrachloride.

Several models of mice-fed high-fat diets have been used to trigger non-alcoholic steatohepatitis and some chemical substances, such as carbon tetrachloride. This study aimed to evaluate the joint action of a high-fat diet and CCl4 in developing a short-term non-alcoholic steatohepatitis model. C57BL6/J mice were divided into two groups: standard diet-fed (SD), the high-fat diet-fed (HFD) and HFD + fructose-fed and carbon tetrachloride (HFD+CCl4). Animals fed with HFD+CCl4 presented increased lipid deposition compared with both SD and HFD mice. Plasma cholesterol was increased in animals from the HFD+CCl4 group compared to the SD and HFD groups, without significant differences between the SD and HFD groups. Plasma triglycerides showed no significant difference between the groups. The HFD+CCl4 animals had increased collagen deposition in the liver compared with both SD and HFD groups. Hydroxyproline was also increased in the HFD+CCl4 group. Liver enzymes, alanine aminotransferase and aspartate aminotransferase, were increased in the HFD+CCl4 group, compared with SD and HFD groups. Also, CCl4 was able to trigger an inflammatory process in the liver of HFD-fed animals by promoting an increase of ~2 times in macrophage activity, ~6 times in F4/80 gene expression, and pro-inflammatory cytokines (IL-1b and TNFa), in addition to an increase in inflammatory pathway protein phosphorylation (IKKbp). HFD e HFD+CCl4 animals increased glucose intolerance compared with SD mice, associated with reduced insulin-stimulated AKT activity in the liver. Therefore, our study has shown that short-term HFD feeding associated with fructose and CCl4 can trigger non-alcoholic steatohepatitis and cause damage to glucose metabolism.