Farmers' decisions to cultivate either a traditional or a commercial variety of quinoa. (CAPRi Project)

The dataset includes data about a field experiment conducted in Peru in september 2012 (project CAPRi). The game was framed around farmers ‘decisions to cultivate either a traditional or a commercial variety of quinoa. The objective of the experiment was to analyze the effectiveness of two types of payments for agrobiodiversity conservation services (PACS) as well as of the effect of allowing farmers to communicate. In the game, the rewards were introduced to conserve a safe minimal population of traditional variety. Nine sessions were organized in different communities of the Province of Puno (close to lake Titicaca). The data were collected during a framed field experiment. Subjects participated in a game (experimental economics) where they were assigned 4 units of land and they had to decide whether to grow a traditional or a commercial variety of quinoa on each of these plots. Each participant was randomly assigned to a group of 4 players. At the end, they received money according to their decisions and the ones of their group peers. This was done to encourage them to act as in real-life situations where their decisions impact their income. They also received money for their participation. Each session was organized with 16 or 20 farm household participants (most of them producing quinoa) originating from the same community. In total, 176 farmers took part to the experiment. Finally a brief survey was completed, including questions about household demographics, farming, as well as organizational affiliation and social distance between participants. There are therefore three types of data in this dataset: 1) identification number (player's number, group's number, session's number, etc...) 2) the decisions of the players during the game (contrib, contrib_group, threshold, etc...) and 3) socio-demographic data from the survey (age, sex, ...).

本数据集包含2012年9月于秘鲁开展的一项田间实验的相关数据（项目代号：CAPRi）。该实验以博弈形式开展，核心围绕农民选择种植传统品种还是商业化品种藜麦的决策展开。本次实验的目标为分析两类农业生物多样性保护服务支付方案（Payments for Agrobiodiversity Conservation Services, PACS）的有效性，以及允许农民进行沟通所产生的影响。在该博弈中，设置奖励机制的目的是维持传统藜麦品种的安全最小种群规模。实验在毗邻的喀喀湖的普诺省不同社区共开展了9场实验。本数据集的数据源自该框架式田间实验：受试者参与一场实验经济学博弈，每人被分配4块土地，需在每块土地上决策种植传统或商业化藜麦品种。每名参与者会被随机分配至4人小组。实验结束后，参与者将根据自身及同组成员的决策获得相应报酬，以此模拟现实场景中个人决策影响收入的情况；此外，参与者还可获得参与实验的报酬。每场实验共有16至20名来自同一社区的农户参与，其中多数为藜麦种植户，本次实验总计共有176名农民参与。所有参与者最终完成了一份简短问卷，问卷内容涵盖家庭人口统计情况、农业生产状况、组织隶属关系以及参与者间的社会距离等问题。本数据集共包含三类数据：1）标识类数据（玩家编号、组别编号、场次编号等）；2）博弈过程中的参与者决策数据（贡献值、组贡献值、阈值等）；3）问卷采集的社会人口统计学数据（年龄、性别等）。