The effect of peer observation on consumption choices: evidence from a lab-in-field experiment

We investigate the impact of peer observation on consumption decisions using a lab-in-field experiment. Respondents make consumption decisions either alone or under peer observation. We find evidence for peer effects. We are able to study these further by looking into the mechanism and performing detailed heterogeneity analysis. Concerning the mechanisms, we find evidence for an information channel. Further, we show that the consumption choice is influenced by how many people made the same decision previously, but not by who those people are, hence finding evidence of a psychological channel. Respondents with higher cognitive ability are less susceptible to peer effects, while people living in small villages are more susceptible.     

The Costs of Deception: Evidence from Psychology

Recently, it has been argued that the evidence in social science research suggests that deceiving participants in an experiment does not lead to a significant loss of experimental control. Based on this assessment, experimental economists were counseled to lift their de facto prohibition against deception to capture its potential benefits. To the extent that this recommendation is derived from empirical studies, we argue that it draws on a selective sample of the available evidence. Building on a systematic review of relevant research in psychology, we present two major results: First, the evidence suggests that the experience of having been deceived generates suspicion that in turn is likely to affect the judgment and decision making of a non-negligible number of participants. Second, we find little evidence for the reputational spillover effects that have been hypothesized by a number of authors in psychology and economics (e.g., Kelman, H.C., 1967. Psychological Bulletin. 67, 1–11; Davis, D.D. and Holt, C.A., 1993. Experimental Economics. Princeton University Press, Princeton). Based on a discussion of the methodological costs and benefits of deception, we conclude that experimental economists' prohibition of deception is a sensible convention that economists should not abandon.     

Holding back from theory: limits and methodological alternatives of randomized field experiments in development economics

ABSTRACT

In this paper, we critically and constructively examine the methodology of evidence-based development economics, which deploys randomized field experiments (RFEs) as its main tool. We describe the context in which this movement started, and illustrate in detail how RFEs are designed and implemented in practice, drawing on a series of experiments by Pascaline Dupas and her colleagues on the use of bednets, saving and governance in Kenya. We show that this line of experiments have evolved to address the limitation of obtaining policy-relevant insights from RFEs alone, characterized as their lack of external validity in the literature. After examining the two prominent responses by leading figures of evidence-based development economics, namely machine learning and structured speculation, we propose an alternative methodological strategy that incorporates two sub-fields, namely experimental economics and behavioral economics, to complement RFEs in investigating the data-generating process underlying the treatment effects of RFEs. This strategy highlights promising methodological developments in RFEs neither captured by the two proposals nor recognized by methodologists, and also guides how to combine different sub-fields of economics.     

Exploring the role of gender in common-pool resource extraction: evidence from laboratory and field experiments in fisheries

There is active debate on gender issues in natural resource management. For example, it is proposed that women are more cooperative than men when dealing with natural resources decisions; however, few scientific studies have directly addressed this hypothesis. We provide evidence for a greater cooperative attitude in women compared to men in both college students and coastal fishing communities of Baja California, Mexico, by means of game theory experiments. In both laboratory and field experiments, women changed their behaviour towards lower extraction compared to men, when regulations, sanctions or social scolding were introduced in the games. These results suggest that raising the role of women in decision-making, along with an adequate institutional framework, may lead to a more sustainable use of natural resources.     

Unemployment insurance: The role of electoral systems and regional labour markets

Levels of insurance against unemployment vary considerably across countries. Replacement rates, the ratio relating income from unemployment to what people earned when they were employed, are higher in countries with proportional electoral systems than in countries with majoritarian systems. Also, replacement rates are positively correlated with per capita income and negatively correlated with the countries' unemployment rates. I develop an electoral competition model that replicates these stylized facts.     

Strategic management implications for the adoption of technological innovations in agricultural tractor: the role of scale factors and environmental attitude

Technological innovations in agricultural tractors have revolutionised farming, increased labour productivity and reduced operator's hazards. The purpose of this paper is to analyse the relation between agricultural tractors’ technological innovations and farm size, as well as users’ attitude on environmental impact of agricultural tractors according to their age and years of activity in the farm. Results, concerning Italy, highlight that high technological innovations of tractors are associated to larger farms, which are managed professionally by more efficient and sophisticated agricultural machineries. Empirical evidence also shows that the older the tractor adopters are and the longer they have been working in agriculture, the higher is their commitment to environment protection and safe working conditions. These results could be important for critical strategic management implications to spur technological innovation in agricultural tractors that better satisfy farmer's needs and to support the fruitful adoption of innovations for an efficient and safe modern agriculture.     

The role of farmer cooperatives in promoting environmentally sustainable agricultural development in China: A review

Environmentally sustainable agricultural development is an essential part of the Sustainable Development Goals proposed by the United Nations in 2015. This article systematically reviews studies on the role of farmer cooperatives in promoting environmentally sustainable agricultural development and uses China as a case study to analyze the measures and function mechanisms of farmer cooperatives in promoting the adoption and scaling of sustainable farming practices by farmers. Farmer cooperatives in China influence farmers’ farming practices and benefits by not only serving farmers with various information and technologies but also supervising farmers’ production processes. Nevertheless, farmer cooperatives, both in general and in China in particular, face challenges in effectively promoting the adoption of environmentally sustainable farming practices. A few policy implications are proposed based on these analyses.     

财政补贴对我国农户农业保险参保决策影响的实证研究——以浙江省为例

2004年,中国开始政策性农业保险试点工作,各级政府通过财政补贴激励农户购买农业保险。本文以浙江省为例,采用Logistic模型,对影响农户农业保险参保决策的因素进行实证分析。研究结果表明：农户对保费补贴政策的了解程度对其参保决策具有统计上的显著影响;保费补贴激励和风险厌恶激励成为推动农户参保的主要因素。据此本文指出,提高农户对政策性农业保险的认知程度和设计符合农户需求的保险险种,能够推动政策性农业保险的深入发展。     

Sanitary and phytosanitary measures in Chinese agricultural exports: the role of trade intermediaries

We study the effect of sanitary and phytosanitary (SPS) measures on Chinese agricultural exports and the role of trade intermediaries in this process following China’s accession to the World Trade Organization. While both agricultural exports and SPS regulations have grown, the use of trade intermediaries has declined sharply. We develop a model of heterogeneous producer-level decisions about choice of export mode that is consistent with this trend. In our econometric analysis, we analyse the effects of SPS measures and trade intermediaries on Chinese fruit and vegetable exports using transaction-level customs data. In contrast to much of the literature, we find some evidence of positive relationships among SPS measures, trade intermediaries and exports.     

Environmental and Economic Effects of a Fall in Cereal Prices in the EU Internal Market: the Case of Denmark

Reform of the EuropeanCommon Agricultural Policy (the CAP) willreduce cereal prices in the Internal Marketwhile simultaneously increasing direct supportto farmers (Agenda 2000). This paper examinesthe possible effects of liberalisation of theCAP by modelling the effects of a 10 per centreduction in cereal prices combined withcompensation to farmers. We applied anintegrated modelling system suitable forestimating both the economic and environmentalconsequences of agricultural and environmentalpolicy measures and calculated the effects of a10 per cent fall in cereal prices on nitrogenloading of the Danish marine waters, on privateconsumption, GDP, the balance of payments, andemployment. The results indicate that pricereductions do not have significant effects onnitrogen loading relative to the 50 per centreduction target, since a 10 per cent reductionin cereal prices only leads to a 2.4 per centreduction in loading.     

The effect of Medicaid expansions for low-income children on Medicaid participation and private insurance coverage: evidence from the SIPP

We examine Medicaid enrollment and private coverage loss following expansions of Medicaid eligibility. We attempt to replicate Cutler and Gruber's [Q. J. Econ. 111 (1996) 391.] results using the Survey of Income and Program Participation (SIPP), and find smaller rates of take-up and little evidence of crowding out. We find that some of the difference in results can be attributed to different samples and recall periods in the data sets used. Extending the previous literature, we find that take-up is slightly increased if a child's siblings are eligible and with time spent eligible. Focusing on children whose eligibility status changes during the sample, we estimate smaller take-up effects. We find little evidence of crowding out in any of our extensions.     

Drawing up the official adjustment rules for damage assessment in agricultural insurance: Results of a Delphi survey for fruit crops in Spain

This paper presents the results of an innovative use of the Delphi technique to obtain quantitative information for the evaluation of the Official Adjustment Rules for Damage Assessment in agricultural insurance. An efficient insurance system must guarantee that loss adjustment is performed fairly and transparently, so that the continual review and modification of adjustment rules becomes especially important. The present study develops and applies a methodology based on the subjective information compiled by experts to evaluate the modification of the Specific Loss Adjustment Rule for Fruit Crops under real market conditions.The results show that the method employed comes forward as a valid option to provide reliable information, as well as other economic and social advantages, in the absence of alternative statistical sources. The validity of the study has been proved by its utility, as the results were extremely useful for drawing up a new Official Adjustment Rule. This application opens up an interesting field of development for this technique, which will enable the proposed methodology to be applied to similar studies in the context of agricultural insurance loss adjustment.     

Technology adoption in autocratic economies: The role of fiscal capacity

What determines technology in autocratic regimes? In this paper, I assume that a rent-extracting regime can adopt technology from the global technology frontier, tax-paying citizens can oust the regime, and technology can decrease the ousting cost. I show that a lack of fiscal capacity can increase technology by preventing the ousting constraint from binding. Consistent with this prediction, tax collections and total factor productivity are negatively related in autocratic regimes. Extensions show that natural resources can divorce fiscal revenues from technology, which can encourage technology blocking. However, if technology adoption is socially costly, autocratic regimes can adopt too much technology.     

Methodology,theory and inquiry in Italian economic and social thought: The making of Francesco Coletti

During the first decades of the twentieth century, Italian economist Francesco Coletti (1866–1940) was recognised as an authority on emigration and agricultural economics. We intend to focus here on Coletti's early career to understand how he rapidly managed to secure an enviable reputation. We examine Coletti's interventions on economic semiology and measurement of national wealth. We then move on to a series of theoretical debates (notably on Marx's theory of value) to which Coletti made significant contributions. Finally, we survey Coletti's fieldwork in agriculture and emigration, topics that allowed for connecting theoretical issues, methodological constraints, and empirical data.     

Testing for the presence of some features of increasing returns to adoption factors in energy system dynamics: An analysis via the learning curve approach

The purpose of this paper is to explain the sources of energy system lock-in. It presents a comparative analysis of the respective contributions of some features of increasing returns to adoption factors, i.e. learning-by-doing, learning-by-searching and returns to scale effects in explaining the technological change dynamics in the energy system. The paper is technically based on a critical analysis of the learning curve approach. Econometric estimation of learning and scale effects inherent to seven energy technologies were performed by the use of several learning curve specifications. These specifications permit to deal with some crucial issues related to the learning curve estimation which are associated with the problem of omitted variable bias, the endogeneity effects and the choice of learning indicators. Results show that dynamic economies from learning effects coupled with static economies from scale effects are responsible for the lock-in phenomena of the energy system. They also show that the magnitude of such effects is correlated with the technology life cycle (maturity). In particular, results point out that, 1) the emerging technologies exhibit low learning rates associated with diseconomies of scale which are argued to be symptomatic of the outset of the deployment of new technologies characterized by diffusion barriers and high level of uncertainty, 2) the evolving technologies present rather high learning rates meaning that they respond quickly to capacity expansion and R&D activities development, 3) conventional mature technologies display low learning rates but increasing returns to scale implying that they are characterized by a limited additional diffusion prospects.     

The effects of education on agricultural productivity under traditional and improved technology in northern Nigeria: an endogenous switching regression analysis

This paper estimates a more efficient version of an endogenous switching regression model to examine the effects of farmer education—schooling and extension contact—on cowpea production under traditional and improved technology in northern Nigeria. The results revealed significant productivity-enhancing effects of schooling and extension contact only under improved technology. Factors that promote technology adoption will thus indirectly raise the marginal contributions of farmer education; these include schooling, participatory technology evaluation, improved seed supply, and market access. The results demonstrate that schooling not only enhances agricultural productivity following technology adoption but also promotes adoption itself.     

Rural credit and the time allocation of agricultural households: The case of PRONAF in Brazil

This paper evaluates the impact of Brazil's National Program to Strengthen Family Farming (PRONAF) on the time allocation of household members. We use data from the 2014 Pesquisa Nacional por Amostra de Domicílios, and we apply propensity score methods to complex surveys recently recommended in the literature. We find that PRONAF helps to increase focus on agricultural activities, but it also stimulates female partners to engage in unpaid work. The results show significant effects of PRONAF on child labor and on the gender‐specific division of labor within households, although it does not have the usual adverse effects of rural credit programs on school attendance.     

特色种植农户对不同技术供给模式的行为响应——以陕西省周至县猕猴桃种植示范村为例

以2013年周至县猕猴桃种植农户技术采用行为的抽样调查问卷为基础,综合分析特色种植农户对不同技术供给模式下的行为响应及其影响因素,探究其中是否存在某些内在的规律性特征。结果表明:1不同技术供给模式对特色种植农户具有一定的普适性;2特色种植农户对不同技术供给模式的采用效率具有相对的差异性,即政府主导型合作主导型企业主导型科研主导型;3特色种植农户对不同技术供给模式的行为响应受内外因素的共同作用,既受信息网络、技术成本、技术风险、技术服务、社会网络、市场环境和政策环境等外部因素的影响,也受文化程度、兼业程度、特色种植收入等内部因素的影响;4在不同技术供给模式的背景下,影响特色种植农户采用行为主要因素的作用力大小存在着一定差异,同时也表现出一定的规律性特征,即不同技术供给模式下的农户采用行为与信息网络、社会网络、市场环境、特色种植收入呈正相关,与兼业程度、技术风险呈负相关。     

The Evolution of Cooperation in Patent Races:Theory and Experimental Evidence

In a dynamic patent race model we analyze the formation and breakup of joint ventures in relation to: (a) the relative as well as absolute position of the firms in the race; (b) the degree of competition in the ex post market. Fudenberg et al. (1983) studied the main features of a patent race when firms compete in R&D, showing that firms in the same position compete fiercely, dissipating the rent from innovation. By contrast, we show that if firms can cooperate or compete in R&D, and if they start in the same position, they cooperate at the outset but break their agreement in the last stage if they will be serious competitors in the downstream market, while, if they can collude in the ex post market, they cooperate from the outset and they innovate jointly. When the firms are lagged by one step, cooperation does not take place, except in the case the value of the race is negative and the cost saving due to cooperation is large. However, cooperation never occurs if the leader is more than one step ahead. Finally, when the firms cooperate in R&D they proceed to the discovery at low speed. We test these conclusions via experiments on the incentive to cooperate during the course of a race. The results of a sample of 86 races support our theoretical conclusions, although the experimental findings are less clear-cut than the theoretical ones.     

The effect of school resources on educational attainment: evidence from Denmark

We investigate the effect of school inputs in primary and lower secondary schools on the probability of eventually passing upper secondary or vocational education. Danish administrative register data for a large number of young people and their parents are used. Educational outcome and controls for family background are measured at the individual level, whereas school expenditure and controls for municipal socioeconomic characteristics are measured at the municipal level. As unobserved characteristics may be correlated for pupils within the same municipality, we estimate linear probability and logit models with random municipal‐specific effects in addition to standard OLS and logit models. With the full sample of pupils and the full set of controls, we find that expenditure per pupil has a statistically significant, but rather small, positive effect on educational attainment. Effects of teacher–pupil ratios are less significant. The expenditure effects are generally higher for pupils from disadvantaged backgrounds.