Final answer:
Cohorts from the 1920s and those born later exhibit considerable differences in social attitudes and life stages. Baby Boomers redefined age and lifestyle norms, while Millennials have altered views on when childhood ends and old age begins. These generational shifts reflect broader social and cultural changes over the 20th and 21st centuries.
Step-by-step explanation:
When examining the differences between cohorts born in the 1920s and those born later, such as the Baby Boomers and Millennials, we observe shifts in societal attitudes, lifestyles, and demographic trends. The 1920s cohorts experienced cultural upheavals and changes in social norms, especially in urban areas, which included shifts in the roles of women in society, reactions to immigration, and changes brought about by scientific advancements that challenged traditional beliefs. The Sacco and Vanzetti and Scopes trials encapsulated some of these tensions.
The Baby Boomers, born between 1946 and 1964, grew up during times of relative prosperity and witnessed substantial technological and social change. They distinguished themselves by rejecting the conformity of the 1950s and demanding civil rights, gender equality, and an end to the Vietnam War. Baby Boomers redefined what it meant to be young, middle-aged, and old, significantly impacting marketing, economic, and social structures as they aged.
Millennials, born from the early 1980s to the mid-1990s, have further altered socialization patterns. They tend to view the stages of life differently, thinking childhood ends later and old age begins earlier compared to the perspectives of previous generations at similar ages. Today, these generations' shared experiences continue to influence social attitudes and demographic trends, shaping how society defines age and maturity.