After a review of findings from the Seattle Longitudinal Study of adult cognitive development, this paper discusses the application of event history analysis, a technique pioneered by sociologists, to data involving changes of states in individual behavior related to human aging.
The dependent variable of interest for psychologists and other deveiopmentalists should be the age (calendar or functional) at which the event occurs rather than its index in historical time.
Using occurrence of significant decline in cognitive abilities as an exemplar, hazard functions are presented that allow the assessment of risk for future decline, as well as the prediction of the calendar age when individuals can expect cognitive decline under alternate assumptions.
經過審查發現從西雅圖縱向研究成人認知的發展，論述了應用事件史分析，這種技術率先社會學家，數據涉及改變國家在個人行為與人類老化。
因變量的利益，心理學家和其他deveiopmentalists應該是年齡（日曆或功能）在該事件發生，而不是它的指數在歷史時間。
使用中發生的認知能力顯著下降作為一個典範，危險性職能列，使評估未來的風險下降，以及預測的日曆年齡當個人認知能力下降，可以預期交替條件下的假設。
