In 1885, Ravensien was the first to generalize the migration pattern based on the birthplace in Britain during that time. This generalization of migration is named the " law of migration ".
As per Ravensien, there are three basic factors of migration:
- Motive
- Distance
- Migrants composition
Motive:
The motive behind the migration may be economic, better security, political, cultural, marriage, or social.
Distance:
How far do migrants want to travel?
Migrants composition:
Such as gender, and age. Culture, etc.
Based on the above three factors, Ravenstein gave the following 9 generalized views of the law of migration:
- Distance decay model or inverse relationship between distance and volume of migration.
- Support:
- Large migration happened in the nearest city.
- Criticism:
- A large number of Indians prefer to go to the USA as compared to China despite long-distance.
- Step migration.
- Support:
- Generally, it has been seen the following pattern; Village--> Town--> City-->Mega City
- Criticism:
- A large number of a villager from Bihar directly migrates to West Asia
- Every migration produces a counter-current
- Support:
- India gets large remittances from abroad.
- Criticism:
- This is not true in the case of permanent migration.
- Female is more flexible in-migration than male.
- Migration is age-specific
- Migration mostly happened because of economic reasons
- Criticism:
- Rohingya and Syrian migrants are not because of economic reasons but insecurity.
- The large infusion of migration in India during the 1950s was not for economic reasons.
- Migration is the main reason for the population growth of a large city than natural birth.
- The majority of migrants are young
- More Migration happened in rural areas as compared to urban areas.
- Critically examine the theories of population migration. (2015 UPSC )
You may like also:
- Ravenstein Law of migration Geography
- The Gravity Model of Migration Geography
- Theory of intervening opportunities by Stouffer
- Lee's push-pull theory of migration
- Zelinsky's migration transition model
- Consequence of migration
- Migration-inter-regional-intraregional and international
- Causes and consequences of migration
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