Price Protection and Productivity Growth
研究价格保护对生产率增长的影响，理论分析表明影响不确定。基于新西兰牛羊产业的实证证据显示，1975-1985年间的高保护导致负生产率增长，而1985年市场自由化后生产率大幅提升。
Abstract This study provides empirical evidence on the relationship between price protection and productivity growth. From theoretical considerations, it is concluded that the impact of price protection on productivity growth is ambiguous. Although protectionism may in some instances stimulate investment and adoption of new technologies, efficiency may decrease, particularly when farm prices and income are high. Empirical evidence from the New Zealand beef/sheep industry indicates that high protection during the 1975–85 period produced negative productivity growth. Following market liberalization in 1985, productivity growth increased substantially.