 |
| Time Period | Experiences | Cohort Age At Experience | Current Cohort Age |
| 1900–1920 | Reservations | Children & Adolescents | 85+ |
| Children | 75–85 | ||
| Forced Boarding Schools | not born yet | 65–75 | |
| not born yet | |||
| Traditional Culture seen as “Bad” | not born yet | 55–65 | |
| Law Banned Spiritual Practices | |||
| 1920–1940 | U.S. Citizenship | Young Adults & Middle Aged | 85+ |
| Adoption of Indian Children by Whites | Adolescents & Young Adults | 75–85 | |
| Loss of Land by Allotment System | Children & Adolescents | 65–75 | |
| Forced Assimilation | Children | 55–65 | |
| Boarding Schools | |||
| 1940–1960 | World War II Service | Middle Aged & Young Old | 85+ |
| Relocation by BIA | Young Adults & Middle Aged | 75–85 | |
| Termination of 100 Tribes | Adolescents & Young Adults | 65–75 | |
| Forced Assimilation | Children & Adolescents | 55–65 | |
| 1960–1980 | Vietnam War | Young Old & Old | 85+ |
| Indian Activism | Middle Aged & Young Old | 75–85 | |
| Youths Return to Traditional Practices | Young Adults & Middle Aged | 65–75 | |
| Urbanization for Education & Jobs | Adolescents & Young Adults | 55–65 | |
| 1980–present | Education of Professionals Litigation | Old | 85+ |
| Self-Determination of Tribes | Young Old & Old | 75–85 | |
| Urban Pan-Indianism | Middle Aged & Young Old | 65–75 | |
| Reservation Gaming | Young Adult & Middle Aged | 55–65 |
Source: Hendrix, L. in Yeo et al, 1998
