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This chapter contains sections titled: A Permanent Collection? The Phenomenology of Determining a Changing Object in a Moving Subject Visible Freedom: Nineteenth‐Century German Aesthetic Theories and Legacies Transformation A Lasting Impression.

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Patients with psychiatric illness feel the brunt of the intersection of many of our society's and our health care system's disparities, and the vulnerability of this population during the Covid‐19 pandemic cannot be overstated. Patients with psychiatric illness often suffer from the stigma of mental illness and receive poor medical care. Many patients with severe and persistent mental illness face additional barriers, including poverty, marginal housing, and food insecurity. Patients who require psychiatric hospitalization now face the risk of transmission of (...) Covid‐19 due to the inherent difficulties of social distancing within a psychiatric hospital. Patients whose freedom and self‐determination have been temporarily overruled as they receive involuntary psychiatric treatment deserve a setting that maintains their health and safety. While tele‐mental health has been rapidly expanded to provide new ways to access psychiatric treatment, some patients may have limitations in technological literacy or access to devices. The social isolation, economic fallout, and potential traumatization related to the current pandemic will disproportionately affect this vulnerable population, and society's duties to them must be considered. (shrink)

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The coronavirus pandemic has necessitated extraordinary human resilience in order to preserve and prolong life and social order. Risks to health and even life are being confronted by workers in health and social care, as well as those in roles previously never defined as “frontline,” such as individuals working in community supply chain sectors. The strategy adopted by the United Kingdom government in facing the challenges of the pandemic was markedly different from other countries. The present study set out to (...) examine what variables were associated with resilience, burnout, and wellbeing in all sectors of frontline workers, and whether or not these differed between the UK and Republic of Ireland. Individuals were eligible if they were a frontline worker in the UK or RoI during the pandemic. Part of a larger, longitudinal study, the participants completed an online survey to assess various aspects of their daily and working lives, along with their attitudes toward their government’s handling of the crisis, and measurement of psychological variables associated with heroism. A total of 1,305 participants provided sufficient data for analysis. UK-based workers reported lower wellbeing than the RoI-based participants. In multivariate models, both psychological and pandemic-related variables were associated with levels of resilience, burnout, and wellbeing in these workers, but which pandemic-related variables were associated with outcomes differed depending on the country. The judgment of lower timeliness in their government’s response to the pandemic appeared to be a key driver of each outcome for the UK-based frontline workers. These findings provide initial evidence that the different strategies adopted by each country may be associated with the overall wellbeing of frontline workers, with higher detriment observed in the UK. The judgment of the relatively slow response of the UK government to instigate their pandemic measures appears to be associated with lower resilience, higher burnout, and lower wellbeing in frontline workers in the UK. (shrink)

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Women currently earn 77 cents for every dollar earned by men. Explanations abound for why, exactly, this wage gap exists. One of the more potent justifications attributes this pay differential to the unequal effects of marriage on the sexes: the marital asymmetry hypothesis. However, even when marital status is accounted for, a small but significant residual gap remains. This article argues that this is the result of social factors. Entrenched societal sexism causes all of us to harbor unconscious bias about (...) the capabilities and proper gender roles of women. This bias, in turn, leads us to discount work completed by females, especially in professional environments. Employers are not immune from this effect, and the undervaluation of female ability affects hiring practices, leading to the residual wage gap. (shrink)

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Volume 20, Issue 10, October 2020, Page 67-69.

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The context of Covid-19 has offered an unusual cultural landscape for examining how workers view their own position relative to others, and how individuals respond to prolonged exposure to workplace stress across different sectors and cultures. Through our recent work tracking the well-being of frontline workers in the UK and Ireland, we have uncovered additional psychological factors that have not been accounted for in previous models of occupational stress or burnout. In recent months, frontline workers have worked to protect the (...) community from the threat of SARS-CoV-2 and, simultaneously, have evaluated their perceptions of collective efforts of others as either congruent or incongruent with collective goals : we call this novel aspect solidarity appraisal. These frontline workers have been hailed as heroes, which we argue has led to the creation of an implicit psychological contract between frontline workers and the public. Here, the heroes are willing to “go above and beyond” for the greater good, with the expectation that we do our part by adhering to public health guidelines. Where frontline workers perceive incongruence between the words and actions of others in working toward collective goals this drives negative affect and subsequent burnout. In this perspective article, we evaluate the cultural context of the pandemic in the UK and Ireland and suggest important socio-cultural factors that contribute to perceptions of solidarity, and how this may relate to burnout and worker welfare during and beyond the pandemic context. (shrink)

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The past decades have seen a rise in religious and secular responses to inequality that seek to offer those who are relatively wealthy an opportunity to personally engage with impoverished people and places. This article examines three cases of elite white South Africans who intentionally immersed themselves in poor urban environments. In dialogue with the anthropology of ethics, I argue that immersion was seen as an experimental tool for transforming the self and cultivating virtues of empathy and responsibility towards others. (...) In this way, immersion acted as a technology of the self, linking care of the self to care of others. Yet such experimentation was not without risk. Though imagined as a tool that could promote care of the self and care of others, immersion carries with it the potential to reinforce power divides and/or solicit negative moral judgment. (shrink)

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Friesen et al. (2023) describe barriers to research in patient populations that have been historically labeled as vulnerable and, as a result, are under-represented in research due to the Instituti...

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In Criminalizing Sex, Stuart Green wisely eschews any attempt to fully analyse the problem of ‘sex-by-deception’ in a single chapter, instead offering a ‘basic framework’ for determining whether an expansion of the law of ‘rape by deceit’ might be justified. In this article, I offer a revision to that framework. Green begins from an account of rape centred on the right to (negative) sexual autonomy and seeks to reject an expansionist account under which any deceptions and mistakes could vitiate consent (...) to sexual activity. Sharing these starting points, I argue, pace Green, that variations in the harmfulness and wrongfulness of different deceptions cannot ground content-based restrictions on consent-vitiating deceptions. I argue that whilst different kinds of deceptive practices might wrong V to a greater or lesser extent, these variations lead to content-neutral, form-based restrictions on consent-vitiating deceptions. Moreover, whilst variations in the harms of D’s conduct are unlikely to ground a coherent set of content-sensitive restrictions on consent-vitiating deceptions, the harms of criminalisation differ depending on the content of the deception in question and this might lead to content-based restrictions on liability. However, an analysis of the variable costs of criminalisation is not obviously connected to the moral concept of consent-validity. Accordingly, whilst I suspect that both form and content-based restrictions on consent-vitiating deceptions are warranted in this area, the justification for the latter is unlikely to lie within an analysis of consent-validity itself, or the varied harmfulness and wrongfulness of D’s own conduct. (shrink)

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Gender and social inclusion efforts in agricultural development are focused on making uptake of agricultural technologies more equitable. Yet research looking at how gender relations influence technology uptake often assumes that men and women within a household make farm management decisions as individuals. Relatively little is understood about the dynamics of agricultural decision-making within dual-adult households where individuals’ management choices are likely influenced by others in the household. This study used vignettes to examine decision-making related to maize plot management in (...) 698 dual-adult households in rural Kenya. The results indicated a high degree of joint management of maize plots (55%), although some management decisions—notably those related to purchased inputs—were slightly more likely to be controlled by men, while other decisions—including those related to hiring of labor and maize end uses—were more likely to be made by women. The prevalence of joint decision-making underscores the importance of ensuring that both men’s and women’s priorities and needs are reflected in design and marketing of interventions to support maize production, including those related to seed systems, farmer capacity building, and input delivery. (shrink)

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Background Achieving meaningful consent can be challenging, particularly in contexts of diminished literacy, yet is a vital part of participant protection in global health research. Method We explored the challenges and potential solutions of achieving meaningful consent through a qualitative study in a predominantly hill tribe ethnic minority population in northern Thailand, a culturally distinctive population with low literacy. Semi-structured interviews were conducted with 37 respondents who had participated in scrub typhus clinical research, their family members, researchers and other key (...) informants. A thematic analysis was conducted. Results Our analysis identified four interrelated themes surrounding participants’ ability to give consent: varying degrees of research understanding, limitations of using informal translators, issues impacting decisions to join research, and voluntariness of consent. Suggestions for achieving more meaningful consent included the use of formal translators and community engagement with research populations. Conclusions Participant’s agency in decision making to join research should be supported, but research information needs to be communicated to potential participants in a way that they can understand. We found that improved understanding about the study and its potential benefits and harms goes beyond literacy or translation and requires attention to social and cultural factors. (shrink)

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The purpose of this article is to offer an alternative, more nuanced analysis of the labelling of frontline workers as heroes than originally proposed. Here, we argue that the hero narrative in itself need not be problematic, but highlight a number of wider factors that have led to the initial rise in support for labelling frontline workers as heroes. Through our related work, we have gathered similar stories from frontline workers where they feel betrayed, let down or otherwise short-changed by (...) the hero label, and we have sought to make sense of this through understanding more about how the hero label is used rather than what it means. In this article, we propose a way forward where there is greater discussion around the hero label in this context where individuals can be heroes but still struggle, still fail and still feel vulnerable, and where heroism is viewed as a state of interdependence between heroic actor and the wider group. It is true that heroes can inspire, lead, guide and build morale and camaraderie, but collective responsibility is held with us all. We can draw hope and energy from our heroes, but we must dig deep and be proactive, particularly in the face of adversity. In doing so, we support the heroes to lead from the front and ensure that even though we cannot physically help; we are not making their situation worse. (shrink)

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The goal of the target article is to facilitate understanding of patient ambivalence, a pervasive phenomenon within human decision-making. The authors state that patients often...

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The idea of a profound urban–rural divide has shaped analysis of the 2016 U.S. presidential election results. Here, through examples from agri-food systems, we consider the limitations of the urban–rural divide framework in light of the assumptions and intentions that underpin it. We explore the ideas and imaginaries that shape urban and rural categories, consider how material realities are and are not translated into U.S. rural development, farm, and nutrition policies, and examine the blending of rural and urban identities through (...) processes of rural deagrarianization and urban reagrarianization. We do not argue that an urban–rural divide does not exist, as studies and public opinion polls illustrate both measured and perceived differences in many aspects of the lived experiences that shape our individual and collective actions. Ultimately, we suggest that the urban–rural divide concept obscures the diversity and dynamism of experiences each category encompasses. Additionally, it ignores the connections and commonalities that demand integrative solutions to challenges in agri-food systems, and draw attention to the power relations that shape resource access and use within and across urban and rural spaces. (shrink)

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Reduced Environmental Stimulation Therapy (REST) alters the balance of sensory input to the nervous system by systematically attenuating sensory signals from visual, auditory, thermal, tactile, vestibular, and proprioceptive channels. Previous research from our group has shown that REST via floatation acutely reduces anxiety and blood pressure while simultaneously heightening interoceptive awareness in clinically anxious populations. Anorexia nervosa (AN) is an eating disorder characterized by elevated anxiety, distorted body representation, and abnormal interoception, raising the question of whether REST might positively impact (...) these symptoms. However, this approach has never been studied in eating disorders and it is unknown whether exposure to REST might worsen AN symptoms. To examine these possibilities we conducted an open-label study to investigate the safety and tolerability of REST in AN. We also explored the impact of REST on affective symptoms, body image disturbance, and interoception. Twenty-one partially weight-restored AN outpatients completed a protocol involving four sequential sessions of REST: reclining in a zero-gravity chair, floating in an open pool, and two sessions of floating in an enclosed pool. All sessions were 90 minutes, approximately one week apart. We measured orthostatic blood pressure before and immediately after each session (primary outcome), in addition to collecting blood pressure readings every 10 minutes during the session using a wireless waterproof system as a secondary outcome measure. Each participant's affective state, awareness of interoceptive sensations, and body image was assessed before and after every session (exploratory outcomes). There was no evidence of orthostatic hypotension following floating, and no adverse events (primary outcome). Secondary analyses revealed that REST induced statistically significant reductions in blood pressure, anxiety and negative affect, heightened awareness of cardiorespiratory but not gastrointestinal sensations, and reduced body image dissatisfaction. The findings from this initial trial suggest that individuals with AN can safely tolerate the physical effects of REST via floatation. Future randomized controlled trials will need to investigate whether these initial observations of improved anxiety, interoception, and body image disturbance can be effectively extended to acutely ill AN populations. (shrink)

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When faced with transgressions in their peer groups, children must navigate a series of situational cues (e.g., type of transgression, transgressor gender, transgressor intentionality) to evaluate the moral status of transgressions and to inform their subsequent behavior toward the transgressors. There is little research on which cues children prioritize when presented together, how reliance on these cues may be affected by certain biases (e.g., gender norms), or how the prioritization of these cues may change with age. To explore these questions, (...) 138 5- to 7-year-olds (younger children) and 8- to 10-year-olds (older children) evaluated a series of boy and girl characters who partook in physical or relational aggression with ambiguous or purposeful intent. Children were asked to provide sociomoral evaluations (i.e., acceptability, punishment, and intention attribution judgments) and social preferences. Transgressor gender only impacted children’s social preferences. Conversely, aggression form and transgressor intent shifted children’s sociomoral judgments: they were harsher toward physical transgressors with purposeful intent over those with ambiguous intent but made similar evaluations for relational transgressors regardless of intentionality. The present results suggest that gender is perhaps not uniformly relevant to children across all contexts, as other cues were prioritized for children’s sociomoral judgments. Since children likely have less familiarity with relational aggression compared to physical aggression, it follows that intent would only shift judgments about physical transgressors. This research provides insight about how children simultaneously navigate multiple cues in aggression contexts, which is likely reflective of their real-world experiences. (shrink)

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Individuals with autism spectrum disorder (ASD) demonstrate poor social functioning, which may be related to atypical emotional face processing. Altered functional connectivity among brain regions, particularly involving limbic structures may be implicated. The current magnetoencephalography (MEG) study investigated whole-brain functional connectivity of eight a priori identified brain regions during the implicit presentation of happy and angry faces in 20 7 to 10-year-old children with ASD and 22 typically developing controls. Findings revealed a network of increased alpha-band phase synchronization during the (...) first 400 ms of happy face processing in children with ASD compared to controls. This network of increased alpha-band phase synchronization involved the left fusiform gyrus, right insula, and frontal regions critical for emotional face processing. In addition, greater connectivity strength of the left fusiform gyrus (maximal 85 to 208 ms) and right insula (maximal 73 to 270 ms) following happy face presentation in children with ASD compared to typically developing controls was found. These findings reflect altered neuronal communication in children with ASD only to happy faces during implicit emotional face processing. (shrink)

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In evaluative conditioning, a neutral conditional stimulus (CS) acquires the valence of a pleasant or unpleasant unconditional stimulus (US) after the CS and US are paired (acquisition). Valence acquired by the CS can generalise to other stimuli from the same category. Presenting the CS alone can reduce evaluative conditioning (extinction), but evaluations can return after the US is presented alone (reinstatement). The current research investigated whether extinction and reinstatement generalise to other category members (generalisation stimuli, GS). In Experiment 1, evaluations (...) generalised in acquisition after conditioning with one category exemplar, but GS evaluations were unaffected by extinction and reinstatement. In Experiment 2, we aimed to enhance generalisation by presenting multiple category exemplars during conditioning. This strengthened the generalisation of evaluations in extinction but not reinstatement. In Experiment 3, conditioning with multiple exemplars caused explicit and implicit evaluations (measured using an affective priming task) to generalise in acquisition but not in extinction or reinstatement. The acquisition and extinction of US expectancy generalised in all experiments, but the reinstatement generalised in Experiment 3 only. Overall, we found partial evidence of evaluative generalisation during extinction (but not reinstatement) and demonstrated that the extinction and reinstatement of US expectancy generalises in evaluative conditioning. (shrink)

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The utility of an “ecologically rational” recognition‐based decision rule in multichoice decision problems is analyzed, varying the type of judgment required (greater or lesser). The maximum size and range of a counterintuitive advantage associated with recognition‐based judgment (the “less‐is‐more effect”) is identified for a range of cue validity values. Greater ranges of the less‐is‐more effect occur when participants are asked which is the greatest of m choices (m > 2) than which is the least. Less‐is‐more effects also have greater range (...) for larger values of m. This implies that the classic two‐alternative forced choice task, as studied by, may not be the most appropriate test case for less‐is‐more effects. (shrink)

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Conceptual generalisation occurs when conditional responses generalise to novel stimuli from the same category. Past research demonstrates that physiological fear responses generalise across categories, however, conceptual generalisation of stimulus valence evaluations during fear conditioning has not been examined. We investigated whether conceptual generalisation, as indexed by electrodermal responses and stimulus evaluations, would occur, and differ after training with single or multiple conditional stimuli (CSs). Stimuli from two of four categories (vegetables, farm animals, clothing, and office supplies) were used as the (...) CS+ (followed by an electric stimulus) or CS- (presented alone). Generalisation was assessed by presenting novel stimuli from the CS categories after acquisition, extinction, and reinstatement. One category exemplar was used as the CS+ and CS- in the single group, whereas three exemplars were used as the CS+ and CS- in the multiple group. Electrodermal responses generalised in acquisition and extinction but did not differ between groups. In the multiple group, CS evaluations generalised in acquisition and extinction, whereas generalisation was not evident in the single group. Training with multiple CSs also resulted in the extinction of stimulus valence. The current findings have implications for future research examining the generalisation of valence and for exposure-based treatments of anxiety. (shrink)

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Questions about the nature of the relationship between language and extralinguistic cognition are old, but only recently has a new view emerged that allows for the systematic investigation of claims about linguistic structure, based on how it is understood or utilized outside of the language system. Our paper represents a case study for this interaction in the domain of event semantics. We adopt a transparency thesis about the relationship between linguistic structure and extralinguistic cognition, investigating whether different lexico-syntactic structures can (...) differentially recruit the visual causal percept. A prominent analysis of causative verbs like move suggests reference to two distinct events and a causal relationship between them, whereas non-causative verbs like push do not so refer. In our study, we present English speakers with simple scenes that either do or do not support the perception of a causal link, and manipulate (between subjects) a one-sentence instruction for the evaluation of the scene. Preliminary results suggest that competent speakers of English are more likely to judge causative constructions than non-causative constructions as true of a scene where causal features are present in the scene. Implications for a new approach to the investigation of linguistic meanings and future directions are discussed. (shrink)

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What mechanisms underlie children’s language production? Structural priming—the repetition of sentence structure across utterances—is an important measure of the developing production system. We propose its mechanism in children is the same as may underlie analogical reasoning: structure-mapping. Under this view, structural priming is the result of making an analogy between utterances, such that children map semantic and syntactic structure from previous to future utterances. Because the ability to map relationally complex structures develops with age, younger children are less successful than (...) older children at mapping both semantic and syntactic relations. Consistent with this account, 4-year-old children showed priming only of semantic relations when surface similarity across utterances was limited, whereas 5-year-olds showed priming of both semantic and syntactic structure regardless of shared surface similarity. The priming of semantic structure without syntactic structure is uniquely predicted by the structure-mapping account because others have interpreted structural priming as a reflection of developing syntactic knowledge. (shrink)

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The tendency to neglect base-rates in judgment under uncertainty may be as Barbey & Sloman (B&S) suggest, but it is neither inevitable (as they document; see also Koehler 1996) nor unique. Here we would like to point out another line of evidence connecting ecological rationality to dual processes, the failure of individuals to appropriately judge cumulative probability.

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ArgumentWe examine the criteria used to validate the use of nonhuman organisms in North-American alcohol addiction research from the 1950s to the present day. We argue that this field, where the similarities between behaviors in humans and non-humans are particularly difficult to assess, has addressed questions of model validity by transforming the situatedness of non-human organisms into an experimental tool. We demonstrate that model validity does not hinge on the standardization of one type of organism in isolation, as often the (...) case with genetic model organisms. Rather, organisms are viewed as necessarily situated: they cannot be understood as a model for human behavior in isolation from their environmental conditions. Hence the environment itself is standardized as part of the modeling process; and model validity is assessed with reference to the environmental conditions under which organisms are studied. (shrink)

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Conversation is supported by the beliefs that people have in common and the perceptual experience that they share. The visual context of a conversation has two aspects: the information that is available to each conversant, and their beliefs about what is present for each other. In our experiment, we separated these factors for the first time and examined their impact on a spontaneous conversation. We manipulated the fact that a visual scene was shared or not and the belief that a (...) visual scene was shared or not. Participants watched videos of actors talking about a controversial topic, then discussed their own views while looking at either a blank screen or the actors. Each believed (correctly or not) that their partner was either looking at a blank screen or the same images. We recorded conversants’ eye movements, quantified how they were coordinated, and analyzed their speech patterns. Gaze coordination has been shown to be causally related to the knowledge people share before a conversation, and the information they later recall. Here, we found that both the presence of the visual scene, and beliefs about its presence for another, influenced language use and gaze coordination. (shrink)

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Generalisation in evaluative conditioning occurs when the valence acquired by a conditional stimulus (CS), after repeated pairing with an unconditional stimulus (US), spreads to stimuli that are similar to the CS (generalisation stimuli, GS). CS evaluations can be updated via CS instructions that conflict with prior conditioning (negative conditioning + positive instruction). We examined whether CS instructions can update GS evaluations after conditioning. We used alien stimuli where one alien (CSp) from a fictional group was paired with pleasant US images (...) and another alien (CSu) from a different group was paired with unpleasant US images. The other members from the two groups were used as GSs. After conditioning, participants received negative CSp instructions and positive CSu instructions. In Experiment 1, explicit and implicit GS evaluations were measured before and after the instructions. In Experiment 2, we used a between-participants design where one group received positive/negative CS instructions while a control group received neutral instructions. In both experiments, the positive/negative CS instructions caused a reversal of explicit GS evaluations and an elimination of implicit GS evaluations. The findings suggest that generalised evaluations can change after CS instructions which may have implications for interventions aimed at reducing negative group attitudes. (shrink)

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Penn et al. argue that the complexity of relational learning is beyond animals. We discuss a model that demonstrates relational learning need not involve complex processes. Novel stimuli are compared to previous experiences stored in memory. As learning shifts attention from featural to relational cues, the comparison process becomes more analogical in nature, successfully accounting for performance across species and development.

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It is increasingly clear that chromatin is not just a device for packing DNA within the nucleus but also a dynamic material that changes as cellular environments alter. The precise control of chromatin modification in response to developmental and environmental cues determines the correct spatial and temporal expression of genes. Here, we review exciting discoveries that reveal chromatin participation in many facets of plant development. These include: chromatin modification from embryonic and meristematic development to flowering and seed formation, the involvement (...) of DNA methylation and chromatin in controlling invasive DNA and in maintenance of epigenetic states, and the function of chromatin modifying and remodeling complexes such as SWI/SNF and histone acetylases and deacetylases in gene control. Given the role chromatin structure plays in every facet of plant development, chromatin research will undoubtedly be integral in both basic and applied plant biology. BioEssays 24:234–243, 2002. © 2002 Wiley Periodicals, Inc.; DOI 10.1002/bies.10055. (shrink)

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Sentence comprehension involves maintaining and continuously integrating linguistic information and, thus, makes demands on working memory. Past research has demonstrated that semantic WM, but not phonological WM, is critical for integrating word meanings across some distance and resolving semantic interference in sentence comprehension. Here, we examined the relation between phonological and semantic WM and the comprehension of center-embedded relative clause sentences, often argued to make heavy demands on WM. Additionally, we examined the relation between phonological and semantic WM and the (...) comprehension of transitive and dative active and passive sentences, which may also draw on WM resources depending on the number of propositions that must be maintained and the difficulty of processing passive clauses. In a large sample of individuals with aphasia, we assessed whether comprehension performance on more complex vs. simpler active-passive or embedded relative clause sentences would be predicted by semantic but not phonological WM when controlling for single word comprehension. For performance on the active-passive comprehension task, we found that semantic WM, but not phonological WM, predicted comprehension of dative sentences when controlling for comprehension of transitive sentences. We also found that phonological WM, but not semantic WM, predicted mean comprehension for reversible active-passive sentences when controlling for trials with lexical distractors. On the relative clause comprehension task, consistent with prior results, we found that semantic WM, but not phonological WM, predicted comprehension of object relative clause sentences and relative clause sentences with a passive construction. However, both phonological WM and semantic WM predicted mean comprehension across all relative clause types for reversible trials when controlling for trials with lexical distractors. While we found evidence of semantic WM’s role in comprehension, we also observed unpredicted relations between phonological WM and comprehension in some conditions. Post-hoc analyses provided preliminary evidence that phonological WM maintains a backup phonological representation of the sentence that may be accessed when sentence comprehension processing is less efficient. Future work should investigate possible roles that phonological WM may play across sentence types. (shrink)

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Domestic violence is endemic across Latin America. It is legitimated by patriarchal Christian theologies and widespread gender inequality. Drawing on the work of women theologians and activists working in Argentina, Uruguay and elsewhere, this article explores women's networks of resistance against violence. These include public and legal acknowledgement of domestic violence; the transmission of life-affirming values; pastoral support in the denouncement of violence; and the development of open and fluid household structures.

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