On the relationship between objective increases in pay and employees' subjective reactions
研究基于639名销售人员的样本，发现加薪的吸引力与当前薪资水平无关，且加薪幅度与吸引力呈递减的曲线关系，支持心理物理学的恒定比例原则和边际效用递减原理。
Abstract This study explored whether two principles describe the relationship between the size of a pay increase (a bonus expressed as a percentage of current salary) and the attractiveness of that increase. Based on a sample of sales personnel ( N = 639) and consistent with the constant proportion principle of the psychophysical law, pay increase attractiveness was unrelated to current salary level after controlling for the size of the percentage increase. In addition, at any given salary level, the relationship between the size of the increase and its attractiveness was curvilinear. The attractiveness of larger and larger bonus percentages continues to increase, but at a decreasing rate supporting the principle of diminishing returns.