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In population biologyand demography, generation timeis the average time between two consecutive generations in the lineages of a population. In human populations, generation time typically has ranged from 20 to 30 years, with wide variation based on gender and society. [1][2]Historianssometimes use this to date events, by converting generations ...
A generation is all of the people born and living at about the same time, regarded collectively. [ 1] It also is "the average period, generally considered to be about 20–30 years, during which children are born and grow up, become adults, and begin to have children." [ 2] In kinship, generation is a structural term, designating the parent ...
In order to readily have the generation stated for a certain person, the Ahnentafel numbering may be preceded by the generation. This method's usefulness becomes apparent when applied further back in the generations: e.g. 08-146, is a male preceding the subject by 7 (8-1) generations. This ancestor was the father of a woman (146/2=73) (in the ...
Gen Alpha is the youngest generation to date, encompassing those born from 2011 to 2024. This generation is known for being digital natives, even more so than Gen Z, having been born into a world ...
The Strauss–Howe generational theory, devised by William Strauss and Neil Howe, describes a theorized recurring generation cycle in American history and Western history. According to the theory, historical events are associated with recurring generational personas (archetypes). Each generational persona unleashes a new era (called a turning ...
Date and age range definitions. Western fertility rates, 1960–1980. Generation X is the demographic cohort following the post–World War II baby-boom, representing a generational change from the baby boomers. Many researchers and demographers use dates that correspond to the fertility-patterns in the population.
e. In genealogy, pedigree collapse describes how reproduction between two individuals who share an ancestor causes the number of distinct ancestors in the family tree of their offspring to be smaller than it could otherwise be. Robert C. Gunderson coined the term; synonyms include implex and the German Ahnenschwund ("loss of ancestors").
The generation already comprises the largest share of the “homebuying pie,” according to Redfin, purchasing around 60% of homes bought with mortgages over the last few years.