Experimental auctions, collective induction and choice shift: willingness-to-pay for rice quality in Senegal
研究通过集体归纳处理聚合信息与偏好，检验实验拍卖中消费者对大米质量的支付意愿是否稳健，发现集体归纳后无显著选择偏移，偏好具有稳健性。
We propose a collective induction treatment as an aggregator of information and preferences, which enables testing whether consumer preferences for food quality elicited through experimental auctions are robust to aggregation. We develop a two-stage estimation method based on social judgement scheme theory to identify the determinants of social influence in collective induction. Our method is tested in a market experiment aiming to assess consumers' willingness-to-pay for rice quality in Senegal. No significant choice shift was observed after collective induction, which suggests that consumer preferences for rice quality are robust to aggregation. Almost three quarters of social influence captured by the model and the variables was explained by social status, market expertise and information.