How Universal Is The Big Five? Testing The Five-Factor Model Of Personality Variation Among Forager-Farmers In The Bolivian Amazon,
2013
University of California, Santa Barbara
How Universal Is The Big Five? Testing The Five-Factor Model Of Personality Variation Among Forager-Farmers In The Bolivian Amazon, Michael Gurven, Christopher Von Rueden, Maxim Massenkoff, Hillard Kaplan, Marino Lero Vie
ESI Publications
The five-factor model (FFM) of personality variation has been replicated across a range of human societies, suggesting the FFM is a human universal. However, most studies of the FFM have been restricted to literate, urban populations, which are uncharacteristic of the majority of human evolutionary history. We present the first test of the FFM in a largely illiterate, indigenous society. Tsimane forager–horticulturalist men and women of Bolivia (n = 632) completed a translation of the 44-item Big Five Inventory (Benet-Martínez & John, 1998), a widely used metric of the FFM. We failed to find robust support for the FFM, based …
Faith, Science And Religion,
2013
Chapman University
Cognitive Systems For Revenge And Forgiveness,
2013
University of Miami
Cognitive Systems For Revenge And Forgiveness, Michael E. Mccullough, Robert Kurzban, Benjamin A. Tabak
ESI Publications
Minimizing the costs that others impose upon oneself and upon those in whom one has a fitness stake, such as kin and allies, is a key adaptive problem for many organisms. Our ancestors regularly faced such adaptive problems (including homicide, bodily harm, theft, mate poaching, cuckoldry, reputational damage, sexual aggression, and the infliction of these costs on one's offspring, mates, coalition partners, or friends). One solution to this problem is to impose retaliatory costs on an aggressor so that the aggressor and other observers will lower their estimates of the net benefits to be gained from exploiting the retaliator in …
Guanxi, Networks And Economic Development: The Impact Of Cultural Connections,
2013
University of South Florida
Guanxi, Networks And Economic Development: The Impact Of Cultural Connections, Patricia Anne Weeks
USF Tampa Graduate Theses and Dissertations
The purpose of this study is to explore the mechanics of guanxi in an organizational setting, focusing on the use of interpersonal relationships within Chinese firms to discover how firms initiate, build and use guanxi networks. Two richly detailed case studies document changes that take place over time in two distinct networks with respect to key actors and their contacts. This research also investigates patterns of social structure that emerge over time in these two distinct cases looking at brokerage relationships, network density, and dyadic redundancy in three waves at six month intervals. The cases are dissimilar in all aspects …
When Parity Promotes Peace: Resolving Conflict Between Asymmetric Agents,
2013
Chapman University
When Parity Promotes Peace: Resolving Conflict Between Asymmetric Agents, Erik O. Kimbrough, Roman M. Sheremeta, Timothy W. Shields
ESI Working Papers
Due to the high costs of conflict both in theory and practice, we examine and experimentally test the conditions under which conflict between asymmetric agents can be resolved. We model conflict as a two-agent rent-seeking contest for an indivisible prize. Before conflict arises, both agents may agree to allocate the prize by fair coin flip to avoid the costs of conflict. The model predicts that “parity promotes peace”: in the pure-strategy equilibrium, agents with relatively symmetric conflict capabilities agree to resolve the conflict by using a random device; however, with sufficiently asymmetric capabilities, conflicts are unavoidable because the stronger agent …
Cheap Talk With Two Audiences: An Experiment,
2013
Middlesex University
Cheap Talk With Two Audiences: An Experiment, Mikhail Drugov, Roberto Hérnan-Gonzalez, Praveen Kujal, Marta Troya Martinez
ESI Working Papers
In this paper we experimentally test strategic information transmission between one informed and two uninformed agents in a cheap-talk game. We find evidence of the "disciplining" effect of public communication as compared to private; however, it is much weaker than predicted by the theory. Adding a second receiver naturally increases the complexity of strategic thinking when communication is public. Using the level-k model, we exploit the within subject design to show how individuals decrease their level-k in public communication. Surprisingly, we find that individuals become more sophisticated when they communicate privately with two receivers rather than one.
Religious Identity And The Provision Of Public Goods: Evidence From The Indian Princely States,
2013
Chapman University
Religious Identity And The Provision Of Public Goods: Evidence From The Indian Princely States, Latika Chaudhary, Jared Rubin
ESI Working Papers
Religious identity affects preferences and can consequently affect policy. We propose two mechanisms through which a ruler's religious identity can affect public good provision: i) greater provision of goods in regions where more subjects are the ruler's co-religionists, and ii) lower provision of goods where private markets provide a substitute to the ruler's co-religionists. Empirically, identifying the causal effect of religious identity on policy is often impossible, since the religious identity of rulers rarely changes over time and place. We address this problem by exploiting the variation in the religion of rulers in the Indian Princely States in the early …
Do Prediction Markets Aid Defenders In A Weak‐Link Contest?,
2013
Chapman University
Do Prediction Markets Aid Defenders In A Weak‐Link Contest?, Cary Deck, Li Hao, David Porter
ESI Working Papers
Laboratory experiments have demonstrated that prediction market prices weakly aggregate the disparate information of the traders about states (moves) of nature. However, in many practical applications one might want to predict the move of a strategic participant. This is particularly important in aggressor‐defender contests. This paper reports a set of such experiments where the defender may have the advantage of observing a prediction market on the aggressor’s action. The results of the experiments indicate that: the use of prediction markets does not increase the defender’s win rate; prediction markets contain reliable information regarding aggressors’ decisions, namely excess bid information, that …
Recalibrational Emotions And The Regulation Of Trust-Based Behaviors,
2013
Chapman University
Recalibrational Emotions And The Regulation Of Trust-Based Behaviors, Eric Schniter, Timothy W. Shields
ESI Working Papers
Though individuals differ in the degree to which they are predisposed to trust or act trustworthy, we theorize that trust-based behaviors are universally determined by the calibration of conflicting short- and long-sighted behavior regulation programs, and that these programs are calibrated by emotions experienced personally and interpersonally. In this chapter we review both the main-stream and evolutionary theories of emotions that philosophers, psychologists, and behavioral economists have based their work on and which can inform our understanding of trust-based behavior regulation. The standard paradigm for understanding emotions is based on mapping their positive and negative affect valence. While Valence Models …
Commitment Problems In Conflict Resolution,
2013
Chapman University
Commitment Problems In Conflict Resolution, Erik O. Kimbrough, Jared Rubin, Roman M. Sheremeta, Timothy W. Shields
ESI Working Papers
Commitment problems are inherent to non-binding conflict resolution mechanisms, since an unsatisfied party can ignore the resolution and initiate conflict. We provide experimental evidence suggesting that even in the absence of binding contractual agreements individuals often avoid conflict by committing to the outcome of a conflict resolution mechanism. Commitment problems are mitigated to a greater extent for groups who opt-in to the conflict resolution mechanism, but only when opting-in is costly. Although conflict rates are higher when opting-in is costly than when it is free or exogenously imposed, commitment problems are greatly reduced amongst those groups who choose to opt-in.
Prediction Markets In The Laboratory,
2013
Chapman University
Prediction Markets In The Laboratory, Cary Deck, David Porter
ESI Working Papers
"The idea that there is wisdom from the collective has been forcefully described in “The Wisdom of the Crowds” by James Surowiecki, who argues that the aggregation of information in groups results in better decisions than those that are afforded by any single member of the group. Markets, like opinion polls, are one mechanism for aggregating disparate pieces of information. The aggregation properties of prices were first noted by Hayek (1945) and were formally examined by Muth (1961). In particular, Hayek argues that market prices serve the purpose of sharing and coordinating local and personal knowledge, while Muth shows that …
The Impact Of Competition On Prices With Numerous Firms,
2013
Chapman University
The Impact Of Competition On Prices With Numerous Firms, Xavier Gabaix, David Laibson, Deyuan Li, Hongyi Li
ESI Working Papers
We use extreme value theory (EVT) to develop insights about price theory. Our analysis reveals detail-independent equilibrium properties that characterize a large family of models. We derive a formula relating equilibrium prices to the level of competition. When the number of rms is large, markups are proportional to 1= (nF' [F^-1 (1- 1/n)], where F is the random utility noise distribution and n is the number of rms. This implies prices are pinned down by the tail properties of the noise distribution and that prices are independent of many other institutional details. The elasticity of the markup with respect to …
Salary Determination In The National Hockey League: Restricted, Unrestricted, Forwards, And Defensemen,
2012
Western Michigan University
Salary Determination In The National Hockey League: Restricted, Unrestricted, Forwards, And Defensemen, Kevin Peck
Honors Theses
This thesis will attempt to estimate the relationships between salary and measures of the marginal productivity of hockey players, or performance indicators. Salary determination, as in most other sports leagues, is determined in a labor market. Each player has a marginal revenue product of labor (MRPL) and this MRPL varies from player to player, and from team to team. Firms, in this case teams, seek to add players with a high MRPLin order to increase the quantity and quality of product they sell, in this case wins. Among other things, a player has a MRPLthat will equate to the additional …
Modernization, Sexual Risk-Taking, And Gynecological Morbidity Among Bolivian Forager-Horticulturalists,
2012
University of New Mexico
Modernization, Sexual Risk-Taking, And Gynecological Morbidity Among Bolivian Forager-Horticulturalists, Jonathan Stieglitz, Aaron D. Blackwell, Raúl Quispe Gutierrez, Edhitt Cortez Linares, Michael Gurven, Hillard Kaplan
ESI Publications
Sexual risk-taking and reproductive morbidity are common among rapidly modernizing populations with little material wealth, limited schooling, minimal access to modern contraception and healthcare, and gendered inequalities in resource access that limit female autonomy in cohabiting relationships. Few studies have examined how modernization influences sexual risk-taking and reproductive health early in demographic transition. Tsimane are a natural fertility population of Bolivian forager-farmers; they are not urbanized, reside in small-scale villages, and lack public health infrastructure. We test whether modernization is associated with greater sexual risk-taking, report prevalence of gynecological morbidity (GM), and test whether modernization, sexual risk-taking and parity are …
A Household Model Of Careers And Education Investment,
2012
University of Birmingham
A Household Model Of Careers And Education Investment, Jessica F. Young
Undergraduate Economic Review
This paper develops a two-stage non-cooperative household game, in which parents make career decisions and an investment into their child’s human capital. The model is solved for Nash equilibrium outcomes and extended for a cooperative solution. In non-cooperative pure strategies, both parents choosing to work is a Nash equilibrium, though there are alternative outcomes when the conditions underlying the career decision are varied. The investment behaviour of agents is analysed. We find that choices are critically affected by the magnitude of the cost (and reflected quality) of a high education investment relative to a low investment, and the intrinsic value …
Why Do Women Have More Children Than They Want? Understanding Differences In Women's Ideal And Actual Family Size In A Natural Fertility Population,
2012
University of California, Santa Barbara
Why Do Women Have More Children Than They Want? Understanding Differences In Women's Ideal And Actual Family Size In A Natural Fertility Population, Lisa Mcallister, Michael Gurven, Hillard Kaplan, Jonathan Stieglitz
ESI Publications
Objectives—We develop and test a conceptual model of factors influencing women’s ideal family size (IFS) in a natural fertility population, the Tsimane of Bolivia. The model posits affects of socioecology, reproductive history, maternal condition, and men’s IFS. We test three hypotheses for why women may exceed their IFS despite experiencing socioeconomic development: (H1) limited autonomy; (H2) improved maternal condition; and (H3) low returns on investments in embodied capital.
Methods—Women’s reproductive histories and prospective fertility data were collected from 2002 to 2008 (n = 305 women). Semistructured interviews were conducted with Tsimane women to study the perceived value of …
Fatty Acid Composition In The Mature Milk Of Bolivian Forager-Horticulturalists: Controlled Comparisons With A Us Sample,
2012
University of California, Santa Barbara
Fatty Acid Composition In The Mature Milk Of Bolivian Forager-Horticulturalists: Controlled Comparisons With A Us Sample, Melanie A. Martin, William D. Lassek, Steven J. C. Gaulin, Rhobert W. Evans, Sheela S. Geraghty, Barbara S. Davidson, Ardythe L. Morrow, Hillard Kaplan, Michael Gurven
ESI Publications
Breast milk fatty acid (FA) composition varies greatly among individual women, including in percentages of the long-chain polyunsaturated FAs (LCPUFA) 20:4n-6 (arachidonic acid, AA) and 22:6n-3 (docosahexaenoic acid, DHA), which are important for infant neurological development. It has been suggested that owing to wide variation in milk LCPUFA and low DHA in Western diets, standards of milk FA composition should be derived from populations consuming traditional diets. We collected breast milk samples from Tsimane women at varying lactational stages (6–82 weeks). The Tsimane are an indigenous, natural fertility, subsistence-level population living in Amazonia Bolivia. Tsimane samples were matched by lactational …
From The Womb To The Tomb: The Role Of Transfers In Shaping The Evolved Human Life History,
2012
University of California, Santa Barbara
From The Womb To The Tomb: The Role Of Transfers In Shaping The Evolved Human Life History, Michael Gurven, Jonathan Stieglitz, Paul L. Hooper, Cristina Gomes, Hillard Kaplan
ESI Publications
Humans are the longest living and slowest growing of all primates. Although most primates are social, humans are highly cooperative and social in ways that likely co-evolved with the slow human life history. In this paper we highlight the role of resource transfers and non-material assistance within and across generations in shaping low human mortality rates. The use of complex cooperative strategies to minimize risk is a necessary precursor for selecting further reductions in mortality rate in late adulthood. In conjunction with changes in the age-profile of production, the impacts of resource transfers and other forms of cooperation on reducing …
Female Labor Force Participation In Argentina, 1980-2003: Gendered Trends And Responses To Crisis,
2012
Scripps College
Female Labor Force Participation In Argentina, 1980-2003: Gendered Trends And Responses To Crisis, Natalie Butterfield
Scripps Senior Theses
How do the experiences of women in the labor market differ from the experiences of men? Do economic crises affect their labor market decisions differently? Economists have investigated the responses of women to specific moments of crisis in Argentina – the country lends itself well to this analysis, as the last three decades of its history have seen both economic growth and financial collapse. With the crisis literature in mind, I investigate trends in female labor force participation rates in Argentina between 1980-2003, finding that while some evidence supports the “added worker effect” hypothesis, more research must be done to …
Does Gender Inequality In Education Affect Educational Outcomes?,
2012
University of Connecticut - Storrs
Does Gender Inequality In Education Affect Educational Outcomes?, Kevin Sheehan
Honors Scholar Theses
There is little doubt that education has a major effect on economic growth. Studies have traditionally used years of schooling (a quantitative variable) to measure education, but there has a shift towards using qualitative measures of education when trying to test the relationship between education and growth. In fact, there is strong evidence that the quality of education is much more important for economic growth than the quantity of education. The best way to measure the quality of education in a given country is to measure educational outcomes, and the best way to measure outcomes across countries is to look …
