Working memory limits are best defined in terms of the complexity of the relations that can be processed in parallel. Complexity is defined as the number of related dimensions or sources of variation. A unary relation has one argument and one source of variation; its argument can be instantiated in only one way at a time. A binary relation has two arguments, two sources of variation, and two instantiations, and so on. Dimensionality is related to the number of chunks, because (...) both attributes on dimensions and chunks are independent units of information of arbitrary size. Studies of working memory limits suggest that there is a soft limit corresponding to the parallel processing of one quaternary relation. More complex concepts are processed by or In segmentation, tasks are broken into components that do not exceed processing capacity and can be processed serially. In conceptual chunking, representations are to reduce their dimensionality and hence their processing load, but at the cost of making some relational information inaccessible. Neural net models of relational representations show that relations with more arguments have a higher computational cost that coincides with experimental findings on higher processing loads in humans. Relational complexity is related to processing load in reasoning and sentence comprehension and can distinguish between the capacities of higher species. The complexity of relations processed by children increases with age. Implications for neural net models and theories of cognition and cognitive development are discussed. (shrink)

Cowan's review shows that a short-term memory limit of four items is consistent with a wide range of phenomena in the field. However, he does not explain that limit, whereas an existing theory does offer an explanation for capacity limitations. Furthermore, processing capacity limits cannot be reduced to storage limits as Cowan claims.

Halford et al. have sharpened the concept of processing capacity as applied to various complex tasks. This commentary examines the apparent contradiction between capacity theories and theories in which it is processing speed, rather than capacity, that presumably limits cognitive performance. It explains how capacity and speed often are interrelated and suggests how one might examine whether capacity or speed is the more elementary in processing.

Halford et al. are not redefining capacity in the sense of limit on resources but in the sense of limits on what resources can do. Furthermore, the necessity of using resource theory as a theoretical frame is questionable.

We present an account of processing capacity in the ACT-R theory. At the symbolic level, the number of chunks in the current goal provides a measure of relational complexity. At the subsymbolic level, limits on spreading activation, measured by the attentional parameter W, provide a theory of processing capacity, which has been applied to performance, learning, and individual differences data.

Measurements of the dimensionality of chaotic attractors obtained on behavioral data represent the task complexity and also could be hypothesized to reflect the number of synchronized neural groups involved in the generation of the data. The changes in dimensionality for different experimental conditions suggest that limited processing capacity, task complexity, demand, and synchrony in neural firing might be closely related.

A temporal account of the mental capacities for processing information may not be relevant in a context where the goal is to search for storage capacity expressed in chunks. However, if mental capacity and information processing is the question, the time issue can be rehabilitated. A very different temporal viewpoint on capacity limit is proposed in this commentary.

Chimpanzee/human technological differences are vast, reflect multiple interacting behavioral processes, and may result from the increased information-processing and hierarchical mental constructional capacities of the human brain. Therefore, advanced social, technical, and communicative capacities probably evolved together in concert with increasing brain size. Interpretations of these evolutionary and species differences as continuities or discontinuities reflect differing scientific perspectives.

The Mental Capacity Act 2005 gives statutory force to the common law principle that all adults are assumed to have capacity to make decisions unless proven otherwise. In accord with best practice, this principle places the evidential burden on researchers rather than participants and requires researchers to take account of short-term and transient understandings common among some research populations. The aim of this paper is to explore some of the implications of the MCA 2005 for researchers working with (...) 'vulnerable' populations in health and social care settings. The Cyclical Consent Model is described and offered as a process by which researchers might develop good practice when engaged in research involving vulnerable people. (shrink)

The current study verified the association between cognitive process such as attention, executive functioning, and legal capacity in patients with bipolar disorder. The sample consisted of 72 participants, assorted to episodic patients, euthymic patients, and healthy controls. We used the following neuropsychological measures: subtests of the Wechsler Abbreviated Intelligence Scale : vocabulary and matrix reasoning; Continuous Performance Test ; Five Digit Test ; and Rey–Osterrieth Complex Figure. Euthymic patients expressed slower processing speed compared to HC. They tended to (...) make more errors with slightly worse discrimination, suggesting more impulsiveness. On the contrary, episodic patients showed worse discrimination, committed more omissions, were more inconsistent with regard to response speed, showed more difficulties in organizing their actions, and were more rigid. The results suggest that bipolar patients in episode express more cognitive impairments that can compromise the quality of legal capacity. These results highlight the need for more protective support for episodic BD patients regarding legal capacity. (shrink)

Early in the COVID-19 pandemic there was widespread concern that healthcare systems would be overwhelmed, and specifically, that there would be insufficient critical care capacity in terms of beds, ventilators or staff to care for patients. In the UK, this was avoided by a threefold approach involving widespread, rapid expansion of critical care capacity, reduction of healthcare demand from non-COVID-19 sources by temporarily pausing much of normal healthcare delivery, and by governmental and societal responses that reduced demand through (...) national lockdown. Despite high-level documents designed to help manage limited critical care capacity, none provided sufficient operational direction to enable use at the bedside in situations requiring triage. We present and describe the development of a structured process for fair allocation of critical care resources in the setting of insufficient capacity. The document combines a wide variety of factors known to impact on outcome from critical illness, integrated with broad-based clinical judgement to enable structured, explicit, transparent decision-making founded on robust ethical principles. It aims to improve communication and allocate resources fairly, while avoiding triage decisions based on a single disease, comorbidity, patient age or degree of frailty. It is designed to support and document decision-making. The document has not been needed to date, nor adopted as hospital policy. However, as the pandemic evolves, the resumption of necessary non-COVID-19 healthcare and economic activity mean capacity issues and the potential need for triage may yet return. The document is presented as a starting point for stakeholder feedback and discussion. (shrink)

Few studies in sub-Saharan Africa evaluate Institutional Review Boards (IRBs) capacity. The study aims to explore the composition of IRBs, training, and challenges experienced in the ethics review processes by members of research institutions and universities in Addis Ababa, Ethiopia. Our findings indicate that most IRBs members were trained on research ethics and good clinical practice. However, majority perceived the trainings as basic. IRB members faced several challenges including: investigators wanting rapid review; time pressure; investigators not following checklists; limited (...) expertise in reviewing clinical trials, studies on genetics, and traditional medicine; lack of IRB offices for administrative work; competing tasks; limited staffing and the lack of a standardized review system. There is need for advanced training on research ethics to meet the evolving research needs. In addition, investments in IRBs are needed in terms of funding, and physical and human resources in Addis Ababa and Ethiopia in general. (shrink)

Few studies in sub-Saharan Africa evaluate Institutional Review Boards (IRBs) capacity. The study aims to explore the composition of IRBs, training, and challenges experienced in the ethics review processes by members of research institutions and universities in Addis Ababa, Ethiopia. Our findings indicate that most IRBs members were trained on research ethics and good clinical practice. However, majority perceived the trainings as basic. IRB members faced several challenges including: investigators wanting rapid review; time pressure; investigators not following checklists; limited (...) expertise in reviewing clinical trials, studies on genetics, and traditional medicine; lack of IRB offices for administrative work; competing tasks; limited staffing and the lack of a standardized review system. There is need for advanced training on research ethics to meet the evolving research needs. In addition, investments in IRBs are needed in terms of funding, and physical and human resources in Addis Ababa and Ethiopia in general. (shrink)

We are grateful to Paul S. Appelbaum and Wayne Martin for their thoughtful remarks on our paper. Among the various aspects that we might address and refute in return, we have decided to focus on just two issues that we believe have potential to advance the debate. According to Appelbaum, the “assessment of an intuitive process is being predicated on a patient having the ability to reflect on determinants of which he may be completely unaware.” In this passage, he points (...) to an apparently “self-evident paradox.” Also, Martin is skeptical about the assessment of intuitive reasoning ability. We agree that relying entirely on unarticulated gut feelings is problematic in terms of... (shrink)

In this commentary on Anneli Jefferson’s Are Mental Disorders Brain Disorders? I endorse her capacitarian approach to responsibility but suggest that the effects of at least some mental/brain disorders on the agent’s psychology show that we cannot neatly separate the epistemic condition from the control condition when assessing agential capacity. I then discuss the labeling issue in the context of rival attributionist accounts of responsibility which hold that agents are responsible if their actions are attributable to them. The incorporation (...) of mental disorders into identity through social processes may open agents with mental or brain disorders open to unfair blame. However, we cannot fully understand the effects of the disorders on agential capacity without closely attending to the social environment that shapes the way the disorder is conceived, enacted, perceived, and responded to over time. (shrink)

Most studies on refugee populations are organized around trauma-related issues and focus on explaining pathological factors. Few studies are anchored in general developmental psychology with the aim of exploring normal age-specific developmental tasks and how the special circumstances associated with forced migration can influence how developmental tasks are negotiated. This study is part of a larger mixed method study seeking to identify resilience-promoting and resilience-inhibiting factors, on individual and contextual levels, among asylum seekers and refugees on the move and settled (...) in reception centers in Norway. A strategic sample of 20 adolescent and young adult refugees/asylum seekers during flight in Serbia and after arrival in Norway was chosen from a sample of 178 refugees interviewed in depth in Serbia and at receptions centers in Norway. The sample reflects the focus of this paper, which is to explore adolescent and young adult refugees/asylum seekers’ psychological and social needs and resources during flight to and after arrival in the host country, including how developmental tasks are negotiated. Through qualitative analysis, experiences associated with the developmental changes the participants experienced before, during, and after flight are contextualized. Their sense of self, their relationships with their families and their perceptions of their situation as adolescents or young adults in a highly unpredictable situation are presented in the light of relevant theory and findings from similar refugee studies. All the participants have fled from dangerous and intolerable situations in their home countries. They describe extreme dangers during flight in contexts that are unpredictable and where they feel lonely and unsupported. Most have unmet psychosocial needs and have received little support or help for their mental health issues during flight or after arrival in Norway. Suggestions for interventions and resilience-promoting actions are given based on the findings of the study. (shrink)

To address the prevalence and complexities of sustainable development challenges around the world, organizations in the business, government, and non-profit sectors are increasingly collaborating via multi-stakeholder partnerships. Because complex problems can be neither understood nor addressed by a single organization, it is necessary to bring together the knowledge and resources of many stakeholders. Yet, how these partnerships coordinate their collaborative activities to achieve mutual and organization-specific goals is not well understood. This study takes an organization design perspective of collaborative decision-making (...) processes to explore how they impact the effectiveness of multi-stakeholder partnerships. We compare the decision-making processes of 94 sustainability-focused multi-stakeholder partnerships and find that collaborative decision-making has an indirect and positive impact on partnership capacity through systems that keep partners informed, coordinate partner interactions, and facilitate ongoing learning. The implications of this study for multi-stakeholder partnership research and practice are that partnership capacity is contingent on the design of decision-making processes, as well as internal mechanisms that coordinate and monitor collaborative activities. (shrink)

Miller (1956) summarized evidence that people can remember about seven chunks in short-term memory (STM) tasks. However, that number was meant more as a rough estimate and a rhetorical device than as a real capacity limit. Others have since suggested that there is a more precise capacity limit, but that it is only three to five chunks. The present target article brings together a wide variety of data on capacity limits suggesting that the smaller capacity limit (...) is real. Capacity limits will be useful in analyses of information processing only if the boundary conditions for observing them can be carefully described. Four basic conditions in which chunks can be identified and capacity limits can accordingly be observed are: (1) when information overload limits chunks to individual stimulus items, (2) when other steps are taken specifically to block the recoding of stimulus items into larger chunks, (3) in performance discontinuities caused by the capacity limit, and (4) in various indirect effects of the capacity limit. Under these conditions, rehearsal and long-term memory cannot be used to combine stimulus items into chunks of an unknown size; nor can storage mechanisms that are not capacity-limited, such as sensory memory, allow the capacity-limited storage mechanism to be refilled during recall. A single, central capacity limit averaging about four chunks is implicated along with other, noncapacity-limited sources. The pure STM capacity limit expressed in chunks is distinguished from compound STM limits obtained when the number of separately held chunks is unclear. Reasons why pure capacity estimates fall within a narrow range are discussed and a capacity limit for the focus of attention is proposed. Key Words: attention; enumeration; information chunks; memory capacity; processing capacity; processing channels; serial recall; short-term memory; storage capacity; verbal recall; working memory capacity. (shrink)

Therapeutic privilege is a defence that may be available to doctors who fail to disclose to the patient relevant information when seeking informed consent for treatment if they have a reasonable belief that providing that information would likely cause the patient concerned serious physical or mental harm. In a landmark judgement, the Singapore Court of Appeal introduced a novel interpretation of TP, identifying circumstances in which it might be used with patients who did not strictly lack capacity but might (...) be inclined to refuse recommended treatments. In this paper, we explore the conceptual and practical challenges of this novel interpretation of TP. We propose that more emphasis should be placed on forms of shared and supported decision-making that foster the autonomy of patients with compromised mental capacity while being mindful of the need to safeguard their well-being. The kind of privilege that doctors might need to invoke is one of time and supportive expertise to ensure a flexible, responsive approach calibrated to the individual patients’ needs. The provision of such service would extinguish the need for the novel TP proposed by the Singapore Court of Appeal. (shrink)

This article compares situated cognition to contemporary Neo-Aristotelian approaches to the mind. The article distinguishes two components in this paradigm: an Aristotelian essentialism which is alien to situated cognition and a Wittgensteinian “capacity approach” to the mind which is not just congenial to it but provides important conceptual and argumentative resources in defending social cognition against orthodox cognitive science. It focuses on a central tenet of that orthodoxy. According to what I call “encephalocentrism,” cognition is primarily or even exclusively (...) a computational process occurring inside the brain. Neo-Aristotelians accuse this claim of committing a “homuncular” or “mereological fallacy”. The article explains why the label “fallacy” is misleading, reconstructs the argument to the effect that encephalocentric applications of psychological predicates to the brain and its parts amount to a category mistake, and defends this argument against objections by Dennett, Searle, and Figdor. At the same time it criticizes the Neo-Aristotelian denial that the brain is the organ of cognition. It ends by suggesting ways in which the capacity approach and situated cognition might be combined to provide a realistic and ecologically sound picture of cognition as a suite of powers that flesh-and-blood animals exercise within their physical and social environments. (shrink)

Numerous experiments have examined whether moving stimuli capture spatial attention but none have sought to determine whether visual features of looming and receding objects are extracted in a capacity-free manner. The current experiment used the task-choice procedure originated by Besner and Care to examine this possibility. Stimuli were presented in 3D space by manipulating retinal disparity. Results indicate that features of an object are extracted in a capacity-free manner for both looming and receding objects for participants who consciously (...) perceive motion but not for participants who do not consciously perceive motion. These results suggest that the cognitive system is biased to process potentially animate objects, perhaps because of the evolutionary advantage this cognitive ability may provide. (shrink)

Are universities able to operate as strategic actors? An organisational sociology based approach supported by a comparative field research project identifies three types of social, cultural and cognitive processes that play a decisive role in building and implementing local capabilities required to mobilise a strategic capacity. The paper identifies how much these processes are present in the four ideal-types of universities defined by crossing their reputation and their metrics-based performance. Such a meso deterministic perspective suggests that universities may position (...) themselves as proactive actors or principals, and not just as agents of national reforms and political demands. Nevertheless, their ability to do it varies according to their type. The paper also explores the implications of such findings for institutional leadership and steering policymakers. (shrink)

Problems arise when applying the current procedural conceptualization of decision-making capacity to paediatric healthcare: Its emphasis on content-neutrality and rational cognition as well as its implicit assumption that capacity is an ability that resides within a person jeopardizes children’s position in decision-making. The purpose of the paper is to challenge this dominant account of capacity and provide an alternative for how capacity should be understood in paediatric care. First, the influence of developmental psychologist Jean Piaget upon (...) the notion of capacity is discussed, followed by an examination of Vygostky’s contextualist view on children’s development, which emphasizes social interactions and learning for decision-making capacity. In drawing parallels between autonomy and capacity, substantive approaches to relational autonomy are presented that underline the importance of the content of a decision. The authors then provide a relational reconceptualization of capacity that leads the focus away from the individual to include important social others such as parents and physicians. Within this new approach, the outcome of adults’ decision-making processes is accepted as a guiding factor for a good decision for the child. If the child makes a choice that is not approved by adults, the new conceptualization emphasizes mutual exchange and engagement by both parties. (shrink)

The authors of the feature article argue against implied consent in all episiotomy cases, but allow that opt-out consent might be appropriate in limited circumstances.1 However, they do not indicate how clinicians should assess whether the pregnant person is capable of consenting in this way during an obstetric emergency. This commentary will focus on how capacity should be determined during these circumstances, suggest next steps for clinicians if capacity is deemed uncertain or absent, and discuss the appropriate role (...) for opt-out consent in labour. Previous studies investigating the extent to which pregnant persons retain decision-making capacity during labour have shown poor recall, a component of capacity, about consent processes during obstetric emergency procedures in 14%–49% of cases.1 2 As the feature article acknowledges, this does not mean that pregnant persons should be assumed to lack decision-making capacity during labour. Although pain, labour intensity, exhaustion and medications can make consenting processes during labour more difficult and it is possible that these factors will result in the impaired ability of the pregnant person to make informed and voluntary decisions about treatment options, this possibility of impaired capacity should not be taken as the expected outcome nor should it be used as an excuse to skip consenting procedures.1 2 The default to treat labouring patients as able to make their own decisions still stands, although signs that a person lacks …. (shrink)

A needs assessment survey of ethics review committees (ERCs) across Africa was conducted in order to establish their major needs and areas of weaknesses in terms of ethical review capacity. The response rate was 84% (31 of 37 targeted committees), and committees surveyed were located in 18 African countries. The majority of the responding committees (61%) have been in existence between 5 and 10 years; approximately 74% of the respondents were institutional committees, with the remainder being either national (6/31) (...) or regional (2/31). In terms of the ethical review process, nine of the 31 committees that responded did not have standard operating procedures (SOPs), and seven of the 22 that did have SOPs had never revised them after their initial development (an average period of three years). Of the 31 committees, 10 operated without any ethical guidelines. Many of the committees (13/30) met once per month, and the number of proposals reviewed annually varied, ranging from five to over 100. All respondents relied on paper-based data management and archiving systems. Overall, the survey identified the major constraints on ERCs as lack of office equipment, outdated or lack of SOPs, lack of electronic data management systems, inadequate resources, lack of or insufficient expertise on the committees, and poor recognition of the importance of the role of the committees. Consequently, the authors are addressing the identified needs and weaknesses through the Bill and Melinda Gates Foundation-funded capacity building project. The impact of the intervention project will be assessed during and at the end of the four-year longitudinal project. (shrink)

Examples of patients with anorexia nervosa, depression or borderline personality disorder who have decision-making capacity as currently operationalized, but refuse treatment, are discussed. It appears counterintuitive to respect their treatment refusal because their wish seems to be fuelled by their illness and the consequences of their refusal of treatment are severe. Some proposed solutions have focused on broadening the criteria for decision-making capacity, either in general or for specific patient groups, but these adjustments might discriminate against particular groups (...) of patients and render the process less transparent. Other solutions focus on preferences expressed when patients are not ill, but this information is often not available. The reason for such difficulties with assessing decision-making capacity is that the underlying psychological processes of normal decision-making are not well known and one cannot differentiate between unwise decisions caused by an illness or other factors. The proposed alternative, set out in this paper, is to allow compulsory treatment of patients with decision-making capacity in cases of an emergency, if the refusal is potentially life threatening, but only for a time-limited period. The argument is also made for investigating hindsight agreement, in particular after compulsory measures. -/- . (shrink)

Alzheimer's disease and other forms of dementia are among the fastest growing health problems in America. Dementia incidence tends to increase with age, and the elderly are the fastest growing segment of the population. Medical and social sciences research on dementia involving demented patients is both ongoing and necessary. However, as noted in a report of the Office for Human Subjects Research, “while research with intellectually impaired people generates valuable … data, it also provides significant ethical challenges.

The authors propose the integrity capacity construct with its four dimensions (process, judgment, development and system dimensions) as a framework for analyzing and resolving behavioral, moral and legal complexity in business ethics' issues at the individual and collective levels. They claim that moral progress in business comes about through the increase in stakeholders who regularly handle moral complexity by demonstrating process, judgment, developmental and system integrity capacity domestically and globally.

Business ethics education aims to enable students to become conscious of their own values and develop the capacity to voice such values and make value-consistent decisions. However, a student’s personal values and the capacity to act on them tend to change after graduation. In this study, we discuss how moral learning is different in real work life compared to a business school setting, and we explain why graduates may downplay or abandon their values after graduation. We launch the (...) concept of dynamic moral capacity (DMC), defined as the metacognitive routines for processing moral decision outcomes, motivated by humility goals. We suggest that future courses in business ethics develop DMC to avoid value drift and negative moral learning over time after graduation. Finally, we discuss how DMC can be included in the instructional framework of giving voice to values and thus increase its impact on moral learning after graduation. (shrink)

Although various models of ethical decision making have implicitly called upon constructs governed by working memory capacity , a study examining this relationship specifically has not been conducted. Using a sense making framework of EDM, we examined the relationship between WMC and various sensemaking processes contributing to EDM. Participants completed an online assessment comprised of a demographic survey, intelligence test, various EDM measures, and the Automated Operation Span task to determine WMC. Results indicated that WMC accounted for unique variance (...) above and beyond ethics education, exposure to ethical issues, and intelligence in several sensemaking processes. Additionally, a marginally significant effect of WMC was also found with reference to EDM. Individual differences in WMC appear likely to play an important role in the ethical decision-making process, and future researchers may wish to consider their potential influences. (shrink)