Further Discussion of the Evidence for An Intercohort Decline in Education-Adjusted Vocabulary
反驳了Wilson和Gove的观点，认为美国成人教育调整后词汇量的下降并非仅由时期效应导致，而是存在代际下降，且阅读时间减少可能是原因之一。
In their article, Wilson and Gove do not sufficiently consider the implications of the fact that education-adjusted GSS vocabulary scores in the total U.S. adult population declined to an important extent during the period covered by the GSS data. It is improbable that this decline resulted only from period influences: The declines in scores for different age levels over time are inconsistent with the usual tendency for period influences to affect the psychological characteristics of younger persons more than those of older persons. Furthermore, the GSS data show no increases in vocabulary scores within cohorts during middle age, as should have occurred if the intercohort differences shown by the data reflected only age effects. That an intercohort decline in time spent reading has contributed to an intercohort decline in education-adjusted vocabulary scores remains a reasonable hypothesis.