QUALITY DIFFERENCES, THIRD‐DEGREE PRICE DISCRIMINATION, AND WELFARE
研究在两个市场中，本地企业（高质量）与全球企业（低质量）竞争时，三级价格歧视对福利的影响，发现质量相同时歧视不降低福利，质量不同时歧视可能因分配效应而提高福利。
We propose a model with two markets to analyze the welfare implications of price discrimination with quality differences. In each market a local firm that operates in that market only competes against a global firm that operates in both markets. Local firms produce higher‐quality goods than the global firm. If the quality levels of the local firms' products are the same, price discrimination is never welfare‐decreasing. If they differ, discrimination is welfare‐increasing if quantity increases. Because of a positive allocation effect of price discrimination, there are parameter values such that welfare increases while total output decreases with price discrimination.