One-child norm

Also called: One-child policy · Topic: Comparative Development: India, China and Pakistan · NCERT: Class 11, Ch 8 "Comparative Development Experiences of India and its Neighbours"

Meaning

The one-child norm (also called the one-child policy) was China's population policy from about 1979-80. It limited most couples to one child, and it was enforced by force through targets and penalties.

It matters because it is the best-known example of coercive population control (making people follow a rule by force). It slowed China's population growth. It also left China with the lowest sex ratio of the three countries (898 in 2021-23) and made the population age faster. NCERT uses it to compare China's forced approach with India's voluntary one.

Explanation

How it worked

• Rule: most couples could have only one child.
• Method: the policy was coercive. The state set targets for local officials and punished families who broke the rule.
• Background: population had grown fast under Mao. The norm was meant to stop that growth.
• Timeline:
• One-child norm: 1979-80
• Two-child policy: 2016
• Three-child policy: 2021
• NCERT mentions only the two-child change, so it is out of date on this point.

Effect 1: it slowed population growth

• Total Fertility Rate (TFR) is the average number of children a woman would have in her lifetime at today's birth rates.
• Replacement level fertility = 2.1. At this TFR, each generation just replaces itself.
• Two children replace the two parents.

• The extra 0.1 covers girls who die young and the fact that slightly more boys than girls are born.

• China's TFR is 1.2 (2021-23), far below 2.1. So its population is now shrinking (−0.10% a year).

• Worked example (Rule of 70): doubling time in years ≈ 70 ÷ growth rate (%).
• India: 70 ÷ 0.81 ≈ 86 years.
• Pakistan: 70 ÷ 1.96 ≈ 36 years.

• China: the rate is negative, so its population will never double at this rate. It will shrink.

• An important point: China's TFR had already fallen below 3 by the end of the 1970s, before the norm began. It started from just under 6 in 1971 [3]. China made in about 7 years the fall that took India about 35 years [3]. Development and voluntary family planning did much of this work.

Effect 2: it lowered the sex ratio

• Sex ratio is the number of females for every 1,000 males.

• Formula: Sex ratio = (Number of females ÷ Number of males) × 1,000.

• How the norm made it worse:

• Families could have only one child.
• Many wanted that one child to be a son. This is called son preference.

• This led to sex-selective abortion (aborting a foetus because it is a girl).

• Result: China's sex ratio is 898 (WDI 2021-23), the lowest of the three countries.

• Worked example: 898 females for every 1,000 males means that out of every 1,898 people, 102 more are male than female.

Effect 3: it made the population age faster

• The chain of cause and effect:
• Fewer babies were born each year.
• So the share of young people fell.

• Within a few decades, there are more elderly people for every young person.

• Old-age dependency ratio compares the number of elderly people with the number of working-age people. When it rises, fewer workers support each retired person.

• Where China is now:
• Its population peaked at 1.426 billion in 2022 and then began to fall [3].
• Its workforce is shrinking.
• It is becoming "old before rich", which means it is ageing before it reaches high income.
• The UN projects its population could drop below 1 billion before 2100 [3].
• China now gives pro-natal incentives (rewards that encourage people to have children), such as a national childcare subsidy announced in 2025.

In India

• India has never had a one-child rule. It lowered fertility mainly by voluntary means: girls' education, health care and women's empowerment.
• Result: India's TFR fell from 2.2 (NFHS-4, 2015-16) to 2.0 (NFHS-5, 2019-21), just below replacement level [4].
• State TFRs range from 1.4 in Chandigarh to 2.4 in Uttar Pradesh (2019-21) [4].

• Among the Phase-II states, Madhya Pradesh, Rajasthan, Jharkhand and Uttar Pradesh were still above replacement level [4].

• India's own lesson on coercion: the forced sterilisation drive during the Emergency (1975-77) backfired. People lost trust in family planning for years afterwards.

• Who measures it:
• NFHS (National Family Health Survey) is a household survey. NFHS-5 (2019-21) gives an overall sex ratio of 1,020 and a sex ratio at birth of 929, up from 919 in 2015-16 [4][5].
• Sample Registration System (SRS) is the Registrar General of India's large sample survey of births and deaths. Its sex ratio at birth figures are three-year moving averages, so the three-year window moves forward each year [5].

• The WDI (the World Bank's main development database) puts India's sex ratio at 930 (2021-23). Always name the source when you quote a figure.

• Where India stands now: India became the most populous country in 2023. The UN projected 1,425,775,850 people by the end of April 2023 [2]. India's population is projected to peak around 2064 [3].

Don't confuse with

• India's Emergency sterilisation drive (1975-77): this was also coercive, but it was a short campaign in a democracy that backfired. It was not a rule limiting the number of children, and India has never had one.
• Two-child policy (2016) / three-child policy (2021): these are the later relaxations of China's rule, not the original norm. NCERT mentions only the two-child change.
• Replacement level fertility (2.1): this is a TFR benchmark, not a policy. China's TFR of 1.2 is far below it, and India's 2.0 is just below it.
• Sex ratio vs sex ratio at birth: the overall sex ratio counts all females per 1,000 males (NFHS-5: 1,020). Sex ratio at birth counts only girls born per 1,000 boys born (NFHS-5: 929) [4][5].

Prelims Hooks

• China's population policy timeline: one-child norm 1979-80 → two-child 2016 → three-child 2021.
• Trap: China's TFR fell from just under 6 (1971) to below 3 by the end of the 1970s, which was before the one-child norm began [3].
• Lowest sex ratio of the three (WDI 2021-23): China (898). India is 930 and Pakistan is 948.
• Only country of the three with negative population growth (2021-23): China (−0.10%). Its TFR is 1.2, against the replacement level of 2.1.
• China's population peaked in 2022 at 1.426 billion. India overtook it as the most populous country in April 2023 (UN DESA) [2][3].
• India's TFR is 2.0 (NFHS-5, 2019-21), reached with no one-child rule [4].

Mains Points

• Coercion vs development (GS-II/GS-III):
• China's one-child norm cut population growth quickly.
• But it left a skewed sex ratio (898), rapid ageing and a shrinking workforce.
• India brought its TFR down to 2.0 through voluntary means, such as girls' education and health care [4].

• The 1975-77 sterilisation drive showed that coercion backfires in a democracy. The lesson is that development lowers fertility without force.

• Ageing before income (GS-III):

• China is growing "old before rich", so fewer workers now support each elderly person.
• This is a warning for India's southern states, where TFR is below replacement.

• India needs to plan early for pensions and elderly care, and to use its demographic dividend before it closes around the 2040s. The demographic dividend is the extra growth possible when working-age people are a large share of the population.

• Son preference as a structural problem (GS-I/GS-II):

• When a policy limits family size in a society that prefers sons, girls lose out through sex-selective abortion.
• India's sex ratio at birth improved from 919 to 929 between 2015-16 and 2019-21 [5].
• Laws against sex-selective abortion work best alongside steps that raise the value of girls, such as girls' education and women's property rights.

Read more

• Demographic indicators and the one-child norm