Economics Commons^™

Computed Tomography Shows High Fracture Prevalence Among Physically Active Forager-Horticulturalists With High Fertility, Jonathan Stieglitz, Benjamin C. Trumble, Horus Study Team, Caleb E. Finch, Dong Li, Matthew J. Budoff, Hillard Kaplan, Michael D. Gurven

ESI Publications

Modern humans have more fragile skeletons than other hominins, which may result from physical inactivity. Here, we test whether reproductive effort also compromises bone strength, by measuring using computed tomography thoracic vertebral bone mineral density (BMD) and fracture prevalence among physically active Tsimane forager-horticulturalists. Earlier onset of reproduction and shorter interbirth intervals are associated with reduced BMD for women. Tsimane BMD is lower versus Americans, but only for women, contrary to simple predictions relying on inactivity to explain skeletal fragility. Minimal BMD differences exist between Tsimane and American men, suggesting that systemic factors other than fertility (e.g. diet) do not …

Adding Tournament To Tournament: Combining Between-Team And Within-Team Incentives, Michael Majerczyk, Roman Sheremeta, Yu Tian

ESI Working Papers

We examine theoretically and experimentally how combining between-team and within-team incentives affects behavior in team tournaments. Theory predicts that free-riding will occur when there are only between-team incentives, and offering within-team incentives may solve this problem. However, if individuals collude, then within-team incentives may not be as effective at reducing free-riding. Consistent with the theoretical predictions, the results of our experiment indicate that although between-team incentives are effective at increasing individual effort, there is substantial free-riding and declining effort over time. Importantly, a combination of between-team and within-team incentives is effective not only at generating effort but also at sustaining …

Technology Licensing And Innovation – A Correction On Two-Part Tariff Analysis, Yuanzhu Lu, Swapnendu Banerjee, Sougata Poddar

Economics Faculty Articles and Research

The main purpose of this note is two-fold: (i) Correcting an error in the two-part tariff licensing contract, and (ii) Altering one of the main results following the two-part tariff analysis in Mukherjee and Mukherjee (2013). This also strengthens the primary conclusion of Mukherjee and Mukherjee (2013).

A Dynamical Systems Approach To Cryptocurrency Stability, Carey Caginalp

ESI Publications

Recently, the notion of cryptocurrencies has come to the fore of public interest. These assets that exist only in electronic form, with no underlying value, offer the owners some protection from tracking or seizure by government or creditors. We model these assets from the perspective of asset flow equations developed by Caginalp and Balenovich, and investigate their stability under various parameters, as classical finance methodology is inapplicable. By utilizing the concept of liquidity price and analyzing stability of the resulting system of ordinary differential equations, we obtain conditions under which the system is linearly stable. We find that trend-based motivations …

The Dynamics Of Men's Cooperation And Social Status In A Small-Scale Society, Christopher Von Rueden, Daniel Redhead, Rick O'Gorman, Hillard Kaplan, Michael Gurven

ESI Publications

We propose that networks of cooperation and allocation of social status co-emerge in human groups. We substantiate this hypothesis with one of the first longitudinal studies of cooperation in a preindustrial society, spanning 8 years. Using longitudinal social network analysis of cooperation among men, we find large effects of kinship, reciprocity and transitivity in the nomination of cooperation partners over time. Independent of these effects, we show that (i) higher-status individuals gain more cooperation partners, and (ii) individuals gain status by cooperating with individuals of higher status than themselves. We posit that human hierarchies are more egalitarian relative to other …

Co-Enforcement Of Common Pool Resources: Experimental Evidence From Turfs In Chile, Carlos A. Chávez, James J. Murphy, John K. Stranlund

ESI Working Papers

This work presents the results of framed field experiments designed to study the co-enforcement of access to common pool resources. The experiments were conducted in the field with participants in the territorial use rights in fisheries (TURFs) management scheme that regulates access to nearshore fisheries along the coast of Chile. In the experiments, TURF members not only decided on harvest but also invested in monitoring to deter poaching by outsiders. Treatments varied whether the monitoring investment was an individual decision or determined by a group vote. Per-unit sanctions for poaching were exogenous as if provided by a government authority, and …

Kinship Ties Across The Lifespan In Human Communities, Jeremy Koster, Dieter Lukas, David Nolin, Eleanor Power, Alexandra Alvergne, Ruth Mace, Cody T. Ross, Karen Kramer, Russell Graves, Mark Caudell, Shane Macfarlan, Eric Schniter, Robert Quinlan, Siobhan Mattison, Adam Reynolds, Chun Yi-Sim, Eric Massengill

ESI Publications

A hypothesis for the evolution of long post-reproductive lifespans in the human lineage involves asymmetries in relatedness between young immigrant females and the older females in their new groups. In these circumstances, inter-generational reproductive conflicts between younger and older females are predicted to resolve in favor of the younger females, who realize fewer inclusive fitness benefits from ceding reproduction to others. This conceptual model anticipates that immigrants to a community initially have few kin ties to others in the group, gradually showing greater relatedness to group members as they have descendants who remain with them in the group. We examine …

Nonlinear Price Dynamics Of S&P 100 Stocks, Gunduz Caginalp, Mark Desantis

ESI Publications

The methodology presented provides a quantitative way to characterize investor behavior and price dynamics within a particular asset class and time period. The methodology is applied to a data set consisting of over 250,000 data points of the S&P 100 stocks during 2004-2018. Using a two-way fixed-effects model, we uncover trader motivations including evidence of both under- and overreaction within a unified setting. A nonlinear relationship is found between return and trend suggesting a small, positive trend increases the return, while a larger one tends to decrease it. The shape parameters of the nonlinearity quantify trader motivation to buy into …

The Effect Of Social Information In The Dictator Game With A Taking Option, Tanya O'Garra, Valerio Capraro, Praveen Kujal

ESI Working Papers

We experimentally study how redistribution choices are affected by positive and negative information regarding the behaviour of a previous participant in a dictator game with a taking option. We use the strategy method to identify behavioural ‘types’, and thus distinguish ‘conformists’ from ‘counter-conformists’, and unconditional choosers. Unconditional choosers make up the greatest proportion of types (about 80%) while only about 20% of subjects condition their responses to social information. We find that both conformity and counter-conformity are driven by a desire to be seen as moral (the ‘symbolization’ dimension of moral identity). The main difference is that, conformity is also …

Cournot Marked The Turn From Classical To Neoclassical Thinking, Vernon L. Smith, Sabiou M. Inoua

ESI Working Papers

For classical economists, markets served the highest value buyers without anyone in the market needing to know that it was possible to write aggregate buyer reservation prices in the form, D = F (p). Cournot, thereby launched neoclassical economics as modelling and thinking of economic action in terms of their outcome effects, rather than their roots in human experience.

Classical Economics: Lost And Found, Sabiou M. Inoua, Vernon Smith

ESI Working Papers

"We argue that neoclassical value theory suffers from a more basic and serious logical indeterminacy, which is inherent in the axiom of price-taking behavior, and which renders price dynamics indeterminate before inquiring as to its stability. If everyone in the economy takes price as given, whence come these prices? Who is giving these prices? Jevons avoided the indeterminacy by assuming that people must have complete information on supply and demand, and the consequent equilibrium prices—‘perfect competition.’ Walras in effect imported an external agent who found the prices by trial-and-error-correction (the Walrasian Auctioneer). Paradoxically, both approaches had the potential better to …

God And Governance: Reflections On Living In The Belly Of The Beast, Peter Mclaren

Education Faculty Articles and Research

In this critical rage article, Peter McLaren unleashes his revolutionary critique aimed at capitalist injustice behind postdigital socio-technological developments, historical forms of injustice such as racism and colonialism, and recent political events and developments including but not limited to US interventions in Latin America and the presidency of Donald Trump. Rising from two important prongs of McLaren’s work—revolutionary critical pedagogy and liberation theology—the article connects myth, religion, science, politics, technology, and humanity. The article reveals McLaren’s most intimate thoughts and experiences and aligns them with sophisticated theory and philosophy. It dances between the individual and the collective, the realistic and …

Review Of Creditworthy: A History Of Consumer Surveillance And Financial Identity In America, Lynne Doti

Economics Faculty Articles and Research

A book review of Josh Lauer's Creditworthy: A History of Consumer Surveillance and Financial Identity in America.

Estimating Auction Equilibria Using Individual Evolutionary Learning, Kevin James

Computational and Data Sciences (PhD) Dissertations

I develop the Generalized Evolutionary Nash Equilibrium Estimator (GENEE) library. The tool is designed to provide a generic computational library for running genetic algorithms and individual evolutionary learning in economic decision-making environments. Most importantly, I have adapted the library to estimate equilibria bidding functions in auctions. I show it produces highly accurate estimates across a large class of auction environments with known solutions. I then apply GENEE to estimate the equilibria of two additional auctions with no known solutions: first-price sealed-bid common value auctions with multiple signals, and simultaneous first-price auctions with subadditive values

Commentary: Reflections On Decision Research And Its Empiricism: Four Comments Inspired By Harrison, Nathaniel T. Wilcox

ESI Publications

"Generally I find Harrison's chapter cogent, interesting, and well-informed in details and particulars, and so do not speak of them. Instead, I reflect on four larger matters Harrison brings to my mind. These four matters are presented below as four separate sections, to be read as four separate and short comments (though the four sections do share a few threads)."

Monetary Equilibrium And The Cost Of Banking Activity, Paola Boel, Gabriele Camera

ESI Working Papers

We investigate the effects of banks’ operating costs on allocations and welfare in a low interest rate environment. We introduce an explicit production function for banks in a microfounded model where banks employ labor resources, hired on a competitive market, to run their operations. In equilibrium, this generates a spread between interest rates on loans and deposits, which naturally reflects the underlying monetary policy and the efficiency of financial intermediation. In a deflation or low inflation environment, equilibrium deposits yield zero returns. Hence, banks end up soaking up labor resources to offer deposits that do not outperform idle balances, thus …

Does Money Indeed Buy Happiness? “The Forms Of Capital” In Fitzgerald’S Gatsby And Watts’ No One Is Coming To Save Us, Allie Harrison Vernon

English (MA) Theses

Looking primarily at two critically acclaimed texts that concern themselves with American citizenship—F. Scott Fitzgerald’s The Great Gatsby and Stephanie Powell Watts’ No One is Coming to Save Us—I analyze the claims made about citizenship identities, rights, and consequential access to said rights. I ask, how do these narratives about citizenship sustain, create, or re-envision American myth? Similarly, how do the narratives interact with the dominant culture at large? Do any of these texts achieve oppositional value, and/or modify the complex hegemonic structure? I use Pierre Bourdieu’s “The Forms of Capital” to investigate the ways in which economic, cultural, …

Establishing Cryptocurrency Equilibria Through Game Theory, Carey Caginalp, Gunduz Caginalp

ESI Publications

We utilize optimization methods to determine equilibria of cryptocurrencies. A core group, the wealthy, fears the loss of assets that can be seized by a government. Volatility may be influenced by speculators. The wealthy must divide their assets between the home currency and the cryptocurrency, while the government decides the probability of seizing a fraction the assets of this group. We establish conditions for existence and uniqueness of Nash equilibria. Also examined is the separate timescale problem in which the government policy cannot be reversed, while the wealthy can adjust their allocation in reaction to the government’s designation of probability.

Differences In Tsimane Children’S Growth Outcomes And Associated Determinants As Estimated By Who Standards Vs. Within-Population References, Melanie Martin, Aaron Blackwell, Hillard Kaplan, Michael Gurven

Economics Faculty Articles and Research

Anthropometric measures are commonly converted to age stratified z-scores to examine variation in growth outcomes in mixed-age and sex samples. For many study populations, z-scores will differ if calculated from World Health Organization (WHO) growth standards or within-population references. The specific growth reference used may influence statistical estimates of growth outcomes and their determinants, with implications for biological inference. We examined factors associated with growth outcomes in a sample of 152 Tsimane children aged 0–36 months. The Tsimane are a subsistence-scale population in the Bolivian Amazon with high rates of infectious disease and growth faltering. To examine the influence of …

Do Economic Inequalities Affect Long-Run Cooperation & Prosperity?, Gabriele Camera, Cary Deck, David Porter

ESI Working Papers

We explore if fairness and inequality motivations affect cooperation in indefinitely repeated games. Each round, we randomly divided experimental participants into donor-recipient pairs. Donors could make a gift to recipients, and ex-ante earnings are highest when all donors give. Roles were randomly reassigned every period, which induced inequality in ex-post earnings. Theoretically, income-maximizing players do not have to condition on this inequality because it is payoff-irrelevant. Empirically, payoff-irrelevant inequality affected participants’ ability to coordinate on efficient play: donors conditioned gifts on their own past roles and, with inequalities made visible, discriminated against those who were better off.

1st Place Contest Entry: Countering The Current: The Function Of Cinematic Waves In Communist Vs. Capitalist Societies, Maddie Gwinn

Kevin and Tam Ross Undergraduate Research Prize

This is Maddie Gwinn's submission for the 2019 Kevin and Tam Ross Undergraduate Research Prize, which won first place. It contains her essay on using library resources, a three-page sample of her research project on how the Czech New Wave and New Hollywood cinema are defined by their agency in preserving and prescribing cultural meaning across their societies while being bound to their economic systems, and her works cited list.

Maddie is a senior at Chapman University, majoring in Film Production. Her faculty mentor is Dr. Carmichael Peters.

Reconsidering Rational Expectations And The Aggregation Of Diverse Information In Laboratory Security Markets, Brice Corgnet, Cary Deck, Mark Desantis, Kyle Hampton, Erik O. Kimbrough

ESI Working Papers

The ability of markets to aggregate diverse information is a cornerstone of economics and finance, and empirical evidence for such aggregation has been demonstrated in previous laboratory experiments. Most notably Plott and Sunder (1988) find clear support for the rational expectations hypothesis in their Series B and C markets. However, recent studies have called into question the robustness of these findings. In this paper, we report the result of a direct replication of the key information aggregation results presented in Plott and Sunder. We do not find the same strong evidence in support of rational expectations that Plott and Sunder …

Ecological Determinants Of Respiratory Health: Examining Associations Between Asthma Emergency Department Visits, Diesel Particulate Matter, And Public Parks And Open Space In Los Angeles, California, Jason A. Douglas, Reginald S. Archer, Serena E. Alexander

Health Sciences and Kinesiology Faculty Articles

Los Angeles County (LAC) low-income communities of color experience uneven asthma rates, evidenced by asthma emergency department visits (AEDV). This has partly been attributed to inequitable exposure to diesel particulate matter (DPM). Promisingly, public parks and open space (PPOS) contribute to DPM mitigation. However, low-income communities of color with limited access to PPOS may be deprived of associated public health benefits. Therefore, this novel study investigates the AEDV, DPM, PPOS nexus to address this public health dilemma and inform public policy in at-risk communities. Optimized Hotspot Analysis was used to examine geographic clustering of AEDVs, DPM, and PPOS at the …

Dynamic Pricing With Fairness Concerns And A Capacity Constraint, Matthew Selove

Business Faculty Articles and Research

Although some firms use dynamic pricing to respond to demand fluctuations, other firms claim that fairness concerns prevent them from raising prices during periods when demand exceeds capacity. This paper explores conditions in which fairness concerns can or cannot cause shortages. In our model, a firm announces a price policy that states its prices during high and low demand, and customers must travel to a venue to learn the current price. We show that the interaction of fairness concerns with travel costs can cause the firm to set stable prices, which leads to shortages during high demand. However, if the …

The Political Economy Of Foreign Aid And Growth: Theory And Evidence, Sultan Mehmood, Avner Seror

ESI Working Papers

In this paper, we demonstrate that even when foreign aid is used to fund patronage, it may still have a positive - and significant - effect on economic growth in developing countries. First, we present a theory that formalizes the effect of aid on economic growth and patronage. Next, we provide evidence from Pakistan consistent with the predictions of the model that foreign aid increases economic growth, despite being used for patronage. The identification strategy we propose allows us to provide causal evidence for the predictions of the model.

Designing Call Auction Institutions To Eliminate Price Bubbles: Is English Dutch The Best?, Cary Deck, Maroš Servátka, Steven Tucker

ESI Working Papers

The bubble and burst pattern in asset market experiments is among the most replicable results in experimental economics. Numerous studies have searched for means to reduce this mispricing. Using controlled laboratory experiments, we compare mispricing in standard double auction markets to prices in two clock auctions. The double Dutch auction, shown to be more efficient than the double auction in commodity market experiments, does not eliminate bubbles. However, the English Dutch auction does yield prices reflective of underlying fundamentals and succeeds in taming bubbles even with inexperienced traders in the common declining fundamental value environment.

Methodological Differences Cannot Explain Associations Between Health, Anthropometrics, And Excess Resting Metabolic Rate, Michael Gurven, Benjamin Trumble, Jonathan Stieglitz, Dan Cummings, Hillard Kaplan, Aaron D. Blackwell, Gandhi Yetish, Herman Pontzer

ESI Publications

"We appreciate Ocobock's interest in methodological rigor. We largely agree with her commentary, which suggests that departures from standard protocols might have contributed to the high resting metabolic rate (RMR) measured for Tsimane. Indeed, our paper acknowledges many of the key departures from gold-standard indirect calorimetry methods of RMR assessment and attempts to adjust for several of these (Gurven et al., 2016). Bringing standard clinical methods into remote field settings often involves certain compromises, especially in our case, where RMR measurement was just one component of a large-scale health and aging project (Gurven et al., 2017). RMR data collection was …

Salience And Social Choice, Mark Schneider, Jonathan W. Leland

ESI Working Papers

The axioms of expected utility and discounted utility theory have been tested extensively. In contrast, the axioms of social welfare functions have only been tested in a few questionnaire studies involving choices between hypothetical income distributions. In this note, we conduct a controlled experiment with 100 subjects in the role of social planners that tests five fundamental properties of social welfare functions to provide a basic test of cardinal social choice theory. We find that four properties of the standard social welfare functions tested are systematically violated, producing an Allais paradox, a common ratio effect, a framing effect, and a …

A Time To Print, A Time To Reform, Lars Boerner, Jared Rubin, Battista Severgnini

ESI Working Papers

The public mechanical clock and movable type printing press were arguably the most important and complex technologies of the late medieval period. We posit that towns with clocks became upper-tail human capital hubs--clocks required extensive technical know-how and fine mechanical skill. This meant that clock towns were in position to adopt the printing press soon after its invention in 1450, as presses required a similar set of mechanical and technical skills to operate and repair. A two-stage analysis confirms this conjecture: we find that clock towns were 34-40 percentage points more likely to also have a press by 1500. The …

Counterparty Risk And The Establishment Of The New York Stock Exchange Clearinghouse, Asaf Bernstein, Eric Hughson, Marc Weidenmier

Business Faculty Articles and Research

We examine the effect of the establishment of the New York Stock Exchange (NYSE) clearinghouse in 1892 on counterparty risk using a novel historical experiment. During this period, the NYSE stocks were dual-listed on the Consolidated Stock Exchange (CSE), which already had a clearinghouse. Using identical securities on the CSE as a control, we find that the introduction of multilateral net settlement through a clearinghouse substantially reduced volatility of NYSE returns caused by settlement risk and increased asset values. Our results indicate that a clearinghouse can improve market stability and value through a reduction in network contagion and counterparty risk.