Productive behavior through the life course: An essay on the quality of life
指出当前生产性活动模式未被充分认识且不符合个人偏好，提出通过识别和优化生命历程中的生产性活动模式来提升美国生活质量，并强调需要承认生产性活动的多样性并给予人们调整有偿工作分配的机会。
Present patterns of productive activity are neither well recognized, optimal for society, nor in accordance with individual preference. Although a great deal of attention has been given to meeting people's needs for income, medical care, and other services, the quality of their lives must also be defined by what they do for themselves and for others. In discovering present patterns of productive activity throughout the life course and optimizing those patterns, we will raise the quality of American life. To accomplish this task, two great changes are needed: we must recognize the full range of productive activities throughout the life course and give people the opportunity to modify the allocation of paid employment.