2006 Dozier Award Winner / Agent-based models can provide paleoanthropologists with a view of behavioral dynamics and site formation processes as they unfold in digital caricatures of past societies and paleoenvironments. This paper argues that the agent-based methodology has the most to offer when used to conduct controlled, repeatable experiments within the context of behavioral laboratories. To illustrate the potential of this decidedly heuristic approach, I provide a case study of a simple agent-based model currently being used to investigate the evolution of Plio-Pleistocene hominin food sharing in East Africa. The results of this null model demonstrate that certain levels of ecological patchiness can facilitate the evolution of even simple food sharing strategies among equally simple hominin foragers. More generally, they demonstrate the potential that agent-based models possess for helping historical scientists act as their own informants as to what could have happened in the past.

abstract: Food-sharing is central to the human experience, involving biological and sociocultural functions. In small-scale societies, sharing food reduces variance in daily food-consumption, allowing effective risk-management, and creating networks of interdependence. It was hypothesized that trust and interdependence would be fostered between people who shared food. Recruiting 221 participants (51% Female, Mage = 19.31), sharing food was found to decrease trust and interdependence in a Trust Game with $3.00 and a Dictator Game with chocolates. Participants trusted the least and gave the fewest chocolates when sharing food. Contrary to lay beliefs about sharing food, breaking bread with strangers may hinder rather than foster trust and giving in situations where competition over limited resources is salient, or under one-shot scenarios where people are unlikely to see each other again in the future. / Dissertation/Thesis / Masters Thesis Psychology 2020

The sharing economy, which has been receiving significant attention from research due to its unprecedented growth in the recent past, is being seen as a potential driving force to transform and rethink society’s unsustainable approach to consumption. Especially, the concept of food sharing as part of the sharing economy is being considered as essential for a more sustainable world and thus aims at counteracting the unsustainable consumption behaviour of individuals. Even though the importance of food sharing concepts for society is undisputed, academia lags extensive research of this domain from a consumer perspective.  The aim of this study is to investigate the behavioural intention of consumers to engage and use digital, for profit food sharing platforms in a business to consumer setting to obtain an in-depth understanding of the key determinants by extending the Theory of Planned Behaviour. Additionally, a cross-cultural comparison has been undertaken to acknowledge the international importance of this field.  For the purpose of data collection, an online survey has been conducted. This yielded 4353 responses of which 2995 have been taken into account for the data analysis procedures in SPSS and SmartPLS. The software SmartPLS has been utilized to perform a partial least square structural equation modelling (PLS-SEM) assessing the measurement as well as structural model including the testing of the proposed hypotheses. Additionally, a multigroup analysis has been performed to investigate behavioural differences between cultures.  The empirical findings show that perceived usefulness and attitude are the strongest predictors of the behavioural intention followed by perceived behavioural control, economic benefit as well as subjective norm. Moreover, the attitude of consumers is strongly driven by sustainable considerations and the perceived trust of consumers towards digital food sharing platforms. Lastly, no statistically significant moderating effect could be identified with regards to culture.

This dissertation begins with a comprehensive review of the evolutionary biological debate over the evolution of altruism and a discussion of how various models of mechanism have influenced the models of circumstance that paleoanthropologists continue to use in reconstructing details about the level of cooperation displayed by early hominin societies. The remainder of the dissertation concerns itself with systematically exposing previously unquestioned assumptions to potential falsification as well as with exploring some new scenarios concerning the evolution and landscape archaeology of Plio-Pleistocene hominin food sharing, all via a null agent-based model called SHARE. This heuristic model was built to address two major questions: (1) What range of ecological and social conditions facilitates the evolution of food sharing in artificial Plio-Pleistocene hominin populations and (2) Is food sharing at central places necessary for the formation of the so-called "scatter and patches" archaeological landscapes that are characteristic of the Plio-Pleistocene record in East Africa? In answer to the first question, population-level genetic results collected from artificial societies of hominin agents demonstrate that the so-called transitional zone of ecological patchiness can facilitate the evolution of altruistic food sharing in mixed starting populations, even if foragers lack the ability to remember past interactions or to avoid social cheaters. In answer to the second question, ecological patchiness can affect the movements of simple foragers such that the artificial archaeological landscapes they create display the same spatial signature that characterizes observed Oldowan landscapes. That is, in ecological conditions marked by fragmented food resources, archaeological landscapes composed of both concentrated patches and diffuse scatters can form as a result of solitary foragers using simple routes that are in no way tethered to culturally-defined and culturally-maintained central places. In the end, SHARE provides new hypotheses about how ecological patchiness could have influenced both the evolution of altruistic food sharing and the structure of Lower Paleolithic archaeological landscapes. The latter can be tested in the field by looking at the relationship between artifact density and the paleoenvironmental characteristics of locales both in which artifacts are abundant and from which they are conspicuously absent.

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Food has a crucial role in our lives as a way of shaping identities, societies, and because it enables possibilities of bringing people together. Access to food has complex social, ecological, and economic implications that deserve to be examined through a new approach. Natural disasters and nutrition concerns can be taken as an opportunity to reflect on alternative ways of getting accessing food, especially in urban contexts. In case of a similar outbreak or emergency of unknown repercussions, will mainstream food supply function sufficiently and be affordable? The aim of this study is to contribute with increased knowledge and understanding on alternative ways of allocating food in an urban context, to contribute with a discussion on their current spatial arrangements and possible ways of planning for them. As opposed to the mainstream ways of allocating food, alternative organizations specialized in food do not have a permanent space that makes them visible to outsiders, hence hindering access to them. The study shows that urban dwellers can have fluid roles regarding how food is allocated in urban contexts. They can be makers and producers, not only consumers. Alternative food allocation is a phenomenon that entails assorted aspects such as trust, spatiality, and safety and availability of the redistributed food.

Today’s world is characterised by considerable inconsistency. In some parts of the world people are living in starvation and malnutrition, while in some other parts of the same world, about 1.3 billion tons of food is wasted every year. We do not know enough about what contributes to food waste. However, there seems to be an emergent pattern of behaviour around sharing food. This hermeneutic phenomenological research will explore how food sharing might reduce food waste in a cultural and community-based society like Saudi Arabia through the lived experiences of restaurants and food bank employees. Research data were collected through a face-to-face semi-structured interview method from 15 participants from selected restaurants and food bank in Riyadh. Using the theory of planned behaviour (TPB) as the theoretical lens, a conceptual framework was proposed to elicit underlying behavioural and cultural factors impeding food waste reduction and the inefficiency of food sharing. Using Paul Colaizzi’s approach, the collected interview data were reviewed, analysed, and seventeen themes were elicited for further discussion. The findings suggest that culture through an affluent way of life and the show-off lifestyle of hosts continue to contribute to more food wastage. The strictly business nature of restaurants operation leads to edible food fit for human consumption ending up in the garbage. The revised conceptual framework provides insight into the factors hindering food waste reduction and food sharing. With supporting regulations and policies, food leftovers can either be distributed to people in need or put to an alternative use.

This thesis addresses food insecurity from an Indigenous fisheries lens and presents a conceptual model by integrating three different but inter-related domains (ecological, cultural, and business) that impact Indigenous food security. Under the broader umbrella of fisheries and food security, the thesis addresses four objectives: (i) to investigate the co-existence of commercial and subsistence fisheries, (ii) to assess food security among commercial and subsistence fishing households, (iii) to explore the meaning of traditional food by engaging Indigenous youth with an objective to revitalize culture, and (iv) to examine the role of the fisherman’s co-operative as a social enterprise to address community economic development. The study was conducted over a period of 14 months (from September 2013 to December 2014) in Norway House Cree Nation, northern Manitoba, Canada. Community members are engaged in both subsistence and commercial fishing. The two kinds of fisheries co-exist, and potential problems of overlap are handled by temporal separation; spatial separation; formal mechanism of monitoring of net ownership; and informal communication for conflict resolution consistent with Cree values. The study found that extensive sharing of fish and other traditional foods by commercial fishers reached almost half of the total population in the community and contributed to improving food security. I used a participatory research approach to engage Indigenous youth to explore the meaning of traditional food. Participants produced a collaborative artwork on the theme of “what traditional food means to you?” This art work functioned as a boundary object, initiating discussion about food security planning in the community. Norway House Fisherman’s Co-op operates as a social enterprise mainly because of fish sharing and its role in business diversification for community economic development. The Chief and Band Council requested an exploration of ways to add value to their existing commercial fisheries. Based on the findings, further development can rely on: (i) better use of existing fish resources, such as the by-catch, (ii) fishing related economic development, such as value-added fish products, and (iii) use of options regarding regulatory bodies, such as eco-certification. / February 2017

<p>Tourism is typically a hedonic product, and its consumption promotes positive psychology and wellbeing. Industry practitioners and academics have long been advocating sustainable practices and experiences that promote the health and wellness benefits of tourism. Indeed, studies that support designing tourism experiences with positive social and wellness outcomes are needed to better leverage design factors in delivering, communicating, and sustaining the health-related benefits of the tourism experiences. Food is an integral part of the overall tourism experience and has important implications for tourists’ pleasure and wellbeing. Thus, it is important to identify the factors that contribute to a better wellness value of the tourist food experience. </p> <p>Using a multi-qualitative method, the first study explored the communal dining experiences of solo travelers. The results indicate that solo traveler communal dining is affected by many motivations (e.g., socialization and authenticity seeking) and constraints (e.g., safety and health concerns). Other factors that were found to affect communal dining include socio-demographic factors (age, gender, cultural background, previous experiences, and extroversion); other diners’ factors (e.g., attitudes and behaviors, perceived similarity, and cultural barriers); dining place-related factors (e.g., social environment, entertainment, and employees openness); and situation-related factors (food quality, environment safety, group composition, communal dining vibes, and dining time). This study found that communal dining triggers four experiential domains: sensory, intellectual, affective, and behavioral which could result in a transformative and wellness value for solo travelers. Under the right circumstances, communal dining triggers a process of self-change that results in personal and social transformations. </p> <p>Continuing to examine the social experiences of solo travelers, the second study empirically examined the impact of the emotional display of fellow diners on solo travelers’ affect and perceived interpersonal relations during communal dining. The scenario-based experiment showed that other diners' display of emotions influenced solo traveler's affect and rapport perceptions in communal dining. Additionally, fellow communal table diners’ characteristics including their ingroup status and perceived similarity can play a role in impacting solo travelers’ communal dining experience. The perceived similarity was found to act as a trigger or “catalyst” for communal dining experience formation for solo travelers. Further, a positive influence of affect and rapport on solo travelers’ subjective wellbeing was noted.</p> <p>The third study examined the phenomenon of tourist food sharing. The study used experimental design to empirically examine the impact of food sharing on tourists’ interpersonal relationship development, sense of authenticity, and subjective wellbeing. The two experiments showed that tourist food sharing improves interpersonal relationships, tourist perceptions of experience authenticity, and wellbeing. Two culturally divergent tourist groups were compared: U.S. tourists and Chinese tourists. The results showed that U.S. tourists evaluated food sharing higher regarding its impact on authenticity and wellbeing than their Chinese counterparts. </p>

The Hadza, residing near Lake Eyasi in northern Tanzania, represent one of the last remaining hunter-gatherer populations. Inhabiting the same area as our hominin ancestors and exploiting very similar resources, the Hadza maintain a foraging lifestyle characterised by a sexual division of labour. Studies of their foraging and food sharing habits serve as the foundation to numerous hypotheses of human behaviour and evolution. Data from the Hadza have featured heavily in debates on the sexual division of labour. These debates focus predominantly on men’s foraging, including how and why men provision. Women’s provisioning, on the other hand, is seldom explicitly examined and is often presumed to be constrained by reproduction. This thesis contributes to debates on the sexual division of labour by investigating how a woman’s reproductive status affects her foraging behaviours. Observational data on women’s foraging are investigated from 263 person/day follows (1,307 hours total) across 10 camps between 2004 and 2006. These data present the first quantitative documentation of forager women’s eating and sharing outside of camp. Interview data on women’s reproductive timeline are also analysed from in-depth interviews with 58 women from 9 camps in 2015. Spanning from menarche to menopause, these data offer the first quantitative and qualitative documentation of forager women’s menstruation. The results demonstrate that Hadza women eat and share over 800 kilocalories outside of camp per person/day. They regularly give and receive food, including gifts of honey from men. Breastfeeding women are more likely to give gifts and give more gifts than non-breastfeeding women. When they bring nurslings with them outside of camp, they forage less kilocalories per hour. Post-menopausal women eat less relative to what they forage, are less likely to receive gifts, rest less and forage more than pre-menopausal women. Although Hadza women describe their foraging workload as most difficult during late pregnancy, no significant differences in eating, sharing, resting or foraging are observed for pregnant women. Menstrual data from the Hadza reveal that menstruation is not only culturally relevant to the sexual division of labour, but it is also biologically relevant to current understandings of fertility. The majority (60%) of Hadza women report not doing their normal work during menstruation. They also report menstruation-related taboos for berry picking. The thesis presents an in-depth review of women’s menstruation, from the duration of menses to the menstrual cleaning process.