Malthus theory of population growth

1. BY SAYANTANI SINGH

2.  Thomas Robert Malthus (1766-
1834) – Malthus Theory of Population
Growth
 Sir Thomas Robert Malthus setout
his view about population. His famous
book “ESSAY ON THE PRINCIPLE
OF POPULATION “
 Follow Law of Diminishing
Returns
 He viewed the rapid increases
of population depended by the
law of diminishing food supply .

3. CLASSICAL CONCEPT
The Malthusian Theory explains the relationship between the population
growth and food supply .He stated that the population increases faster
than the supply of food.

4. THEORY OF MALTHUS
 Food is necessary for human existence
 Human population tends to grow faster than in the earth to
produce subsistence.
 The effects of these two unequal powers must be kept equal.
 Since human tends not to limit their population size voluntarily
–” PREVENTIVE CHECKS "in Malthus theory.

5. MATHEMATICAL CONCEPT
 ARITHMATIC PROGRESSION
 GEOMETRIC PROGRESSION
ARITHMETRIC
GEOMETRIC
The food supply
increases in
successive times
,1,2,3,4,5,6,7,8,9,1
0
The Trends of
population growth
in successive time
will be
1,2,4,8,16,32,64,12
8,256

6. METHOD OF POPULATION GROWTH CONTROL
To control the population growth ,he had
suggested two method
1. Positive Method
2. Preventive Method
POSITIVE CHECKS PREVENTIVE CHECKS
Famines,Wars,Natural Disaster
which tends to reduce the
population growth.
It depends on man’s Late
Marriage, Celibacy, Moral
resistant's

8. CRITISISMS
The Malthus Theory was widely discussed and criticized
during 19th and 20th century
 The concept of Mathematician form was wrong .He did not
prove the relation between arithmetic and geometric
progression
 Land is limited but technological advancement increases
the food production.
 Malthus did not clear distinguish between fecundity and
fertility.
 Malthus did not success in connecting both positive checks
and preventive checks
He neglected the man power if population growth is high
the man power will be high.