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Purpose and approach – We examine theoretically and experimentally how unequal abilities to contribute affect incentives and efficiency when players compete for membership in stratified groups based on the contributions they make. Players have either a low or a high endowment. Once assigned to a group based on their group contribution, players share equally in their group’s collective output. Depending on the parameters, the mechanism has several distinct equilibria that differ in efficiency.

Findings – Somewhat counter to conventional expectation our theoretical analysis indicates that as long as certain assumptions are satisfied, efficiency increases rather than decreases the more abilities to contribute differ. The analysis also suggests various follow-up experiments about equilibrium selection, tacit coordination, and the effect of unequal abilities in systems with endogenous grouping. We conduct an experiment that shows that subjects tacitly coordinate the mechanism’s asymmetric payoff-dominant equilibrium with precision; this precision is robust to a change in the structure and complexity of the game.

Implications – The results suggest that people respond to merit-based grouping in a natural way and that competitive contribution-based grouping encourages public contributions even when abilities to contribute differ, which is the case in all communities and societies.

Empirical studies show substantial variation across immigrants in the rate and direction of assimilation along various dimensions (e.g., cross-ethnic contact, language, identity). To explain this variation, past research has focused on identifying exogenous factors, such as discrimination, human capital, and settlement intention. In this chapter we argue that variation in immigrant outcomes emerges endogenously through positive interaction effects between dimensions of assimilation. We propose a new assimilation model in which processes of social influence and selection into congruent social environments give rise to multiple long-term equilibria. In this model, migrants who are already assimilated along many dimensions tend to also adapt along other dimensions, while less assimilated migrants become more strongly embedded in their ethnic group.

To test the assimilation model, we derive a number of hypotheses, which we evaluate using trend analysis and dynamic panel regression on data from the Longitudinal Survey of Immigrants to Canada.

The data mostly confirm the hypotheses, providing overall support for the assimilation model.

Our theory and findings suggest that immigrants would follow divergent assimilation trajectories even in the absence of a priori population heterogeneity in external factors.

The positive interaction effects between cultural and structural dimensions of assimilation suggest that mixed policies that promote integration while seeking to prevent loss of identity go against the natural tendency for cultural and structural assimilation to go hand in hand.

The present chapter proposes a novel model of immigrant assimilation and an empirical test.

Market transition theory has specified general mechanisms to explain change in the balance of power between political and economic actors in transition economies. These mechanisms drive the endogenous construction of informal institutions of a market society; moreover, it is within the context of an ongoing change in relative power that the formal institutions of the emerging market economy arise. The theory makes clear predictions on the declining value of political capital as a consequence of progressive marketization, which incrementally results in transformative change in the direction of more relative autonomy between the political and economic spheres, not dissimilar from established market economies (Kornai, 1995; Evans, 1995; Nee, 2000; Lindenberg, 2000; Ricketts, 2000). In sum, the predicted change in relative power between redistributors and producers explains not only bottom-up entrepreneurial activity, but also the emergence of a market economy in departures from state socialism.

This empirical study conceptualizes the institutional environment within which firms function in a transition economy as a number of dimensions, representing the externally set ‘rules of the game’ as perceived by senior managers. It then proposes a mediating model of the links between that environment and the commercial performance of enterprises in which incentive intensity is a key strategic choice, influenced by perceptions of the institutional setting and the influence of that choice is carried on to commercial performance by a set of managerial orientations. The model is tested using survey data from a sample of 959 Chinese enterprises.

This article summarizes and makes the case for the continued relevancy of the scholarly works of the late sociologist Norma Williams. Informed by the multicultural tradition in which Norma Williams and the author both inhabit, and drawing upon their autobiographical experiences as data, the article makes an argument for the relevancy, indeed desirability of multiculturalism (especially as an alternative to assimilation) for clarifying the multiple ways in which diversity and diverse claims promote basic human rights. Drawing extensively from the scholarly works of Herbert Blumer, we highlight how some of the assumptions upon which assimilationist arguments are constructed do not hold up empirically.

In the absence of well-developed, formal institutional frameworks, informal network-based strategies have been argued to be especially viable in emerging economies. However, some empirical research has challenged these earlier theoretical arguments. In light of new evidence, this chapter develops a contingency perspective differentiating firms' networks as strong ties and weak ties. It suggests that while strong-tie networks are typically found during the early phase of institutional transitions, weak-tie networks are more likely to be developed and leveraged during the late phase of transitions. The upshot is that as the performance benefits of strong ties decline during institutional transitions, emerging weak ties' impact on firm performance is likely to increase.

This chapter aims to review evidence of the relationships between dog ownership, dog walking and overall walking and the factors associated with dog walking. It reviews the evidence using a social ecological framework. The chapter finds that dog ownership and dog walking are associated with higher levels of walking. A number of social ecological factors are associated with dog walking. Motivation and social support provided by the dog to walk and a sense of responsibility to walk the dog are associated with higher levels of dog walking. Positive social pressure from family, friends, dog owners and veterinarians is also associated with higher levels of dog walking. Built and policy environmental characteristics influence dog walking, including dog-specific factors such as access to local attractive public open space with dog-supportive features (off-leash, dog waste bags, trash cans, signage), pet-friendly destinations (cafes, transit, workplaces, accommodation) and local laws that support dog walking. Large-scale intervention studies are required to determine the effect of increased dog walking on overall walking levels. Experimental study designs, such as natural and quasi-experiments, are needed to provide stronger evidence for causal associations between the built and policy environments and dog walking. Given the potential of dog walking to increase population-levels of walking, urban, park and recreational planners need to design neighbourhood environments that are supportive of dog walking and other physical activity. Advocacy for dog walking policy-relevant initiatives are needed to support dog walking friendly environments. Health promotion practitioners should make dog walking a key strategy in social marketing campaigns.

This chapter highlights the agency of Nigerian immigrant business owners in constructing their business-related social networks. Literature on immigrant business owners emphasizes their social network embeddedness as a key explanatory factor in their economic integration. I show here ways in which members of one immigrant group purposely shape these networks into the most advantageous form: impersonal/socially distant suppliers, personal/socially close employees, and impersonal/socially distant customers.

Data for the chapter come from 36 semistructured qualitative interviews conducted in New York City with Nigerian small business owners and participant observation in their businesses.

Nigerian immigrant business owners in New York tend over time to shift from business networks of primarily Nigerian or other socially close suppliers, employees, and customers, to networks of mainly socially close employees, and socially distant suppliers and customers.

The chapter’s concern is limited to Nigerian immigrant business owners in New York City. Others in other places may behave differently.

The literature on immigrant business owners is dominated by Asian and Latin American examples while this chapter features the experiences of Nigerian immigrants. It also presents a group that does not fit the widely accepted disadvantage hypothesis of immigrant self-employment. Finally, where many studies treat social networks as static structures, this chapter emphasizes the agency of immigrants in altering the composition of their networks to maximize their position in it.

Elmar Mock's extraordinary story began in a small village in Switzerland. Born in 1954, he was the son of an Austrian immigrant and a Swiss mother. School was difficult, as he struggled with dyslexia. Nevertheless, he graduated from engineering school, obtained a job with a Swiss manufacturer, ETA. By the age of 26, he had co-invented the Swatch. Following the accidental death of his brother, Stéphane, in 1985, he decided to leave his job and launch his own creativity and innovation consulting company, Creaholic, in 1986.

In 2014, Elmar retired from Creaholic and created with his second wife Hélène Mock née Kett, a second company: ‘Mock-Kett’. He has created more than 80 families of patents in various industries and has been involved in more than 600 projects. He is also a member of the advisory boards of some of the spin-offs incubated by Creaholic. He remains active as a speaker and international consultant with ‘Mock-Kett’, which promotes the motivational side of invention. He has received numerous awards and his book ‘The Innovation Factory’ has been published in three languages.

The case depicts a one-of-a-kind creative mindset and offers in-depth reflections on the concepts of creativity, innovation and intrapreneurship and their applications in organizations. ¹

The residents of Ambridge enjoy a varied and mostly nutritious diet ranging from a ploughman’s at The Bull to Jennifer Aldridge’s roast venison, with the occasional tofu and quinoa paella from Kate Madikane. For Helen Titchener (née Archer) an abrupt change in circumstances will have led to changes in her diet that could have endangered her health and that of her unborn baby. Helen was imprisoned from about eight months of pregnancy to about four months postpartum, encompassing a critical period in development of her baby. This chapter focusses on the case of Helen and her baby son Jack to explore the dietary requirements for pregnancy and breastfeeding and how these relate to diet in Ambridge and in prison.