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One-child policy

One-child policy is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand One-child policy rather than just read about it. In short: The one-child policy (Chinese: 一孩政策 / 独生子女政策; pinyin: yī hái zhèngcè / dú shēng zǐ nǚ zhèng cè) was a controversial population planning initiative in Mainland China implemented between 1979 and 2015 to curb the country's population growth by restricting many families to a single child. The program had wide-ranging social, cultural, economic, and demographic effects, although the contribution of one-child restriction…

One-child policy — main illustration
One-child policy — illustration

Key takeaways

  • One-child policy belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect One-child policy to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of One-child policy from memory before moving on to harder problems.

Reference excerpt

The one-child policy (Chinese: 一孩政策 / 独生子女政策; pinyin: yī hái zhèngcè / dú shēng zǐ nǚ zhèng cè) was a controversial population planning initiative in Mainland China implemented between 1979 and 2015 to curb the country's population growth by restricting many families to a single child. The program had wide-ranging social, cultural, economic, and demographic effects, although the contribution of one-child restrictions to the broader program has been the subject of controversy. Its efficacy in reducing birth rates and defensibility from a human rights perspective have been subjects of controversy. China's family planning policies began to be shaped by fears of overpopulation in the 1970s, and officials raised the age of marriage and called for fewer and more broadly spaced births. A near-universal one-child limit was imposed in 1980 and written into the country's constitution in 1982. Numerous exceptions were established over time, and by 1984, only about 35.4% of the population was subject to the original restriction of the policy. In the mid-1980s, rural parents were allowed to have a second child if the first was a daughter. It also allowed exceptions for some other groups, including ethnic minorities under 10 million people. In 2015 in response to demographic issues of the Chinese population, the government raised the limit to two children, and in May 2021 to three. In July 2021, it removed all limits, shortly after implementing financial incentives to encourage individuals to have additional children as well as other pronatalist policies. Implementation of the policy was handled at the national level primarily by the National Population and Family Planning Commission and at the provincial and local level by specialized commissions. Officials used pervasive propaganda campaigns to promote the program and encourage compliance. The strictness with which it was enforced varied by period, region, and social status. In some cases, women were forced to use contraception, receive abortions, and undergo sterilization. Families who violated the policy faced large fines and other penalties. The population control program had wide-ranging social effects, particularly for Chinese women. Patriarchal attitudes and a cultural preference for sons led to the abandonment of unwanted infant girls, some of whom died and others of whom were adopted abroad. Over time, this skewed the country's sex ratio toward men and created a generation of "missing women". However, the policy also resulted in greater workforce participation by women who would otherwise have been occupied with childrearing, and some girls received greater familial investment in their education. The Chinese Communist Party (CCP) credits the program with contributing to the country's economic ascendancy and says that it prevented 400 million births, although some scholars dispute that estimate. Some have also questioned whether the drop in birth rate was caused more by other factors unrelated to the policy. In the West, the policy has been widely criticized for human rights violations and other negative effects.

Background

Since the establishment of the People's Republic of China in 1949, socialist construction was the utmost mission the state needed to accomplish. Top state leaders believed that a bigger population would effectively contribute to the national projects. During Mao Zedong's leadership in China, the birth rate fell from 37 per thousand to 20 per thousand. Infant mortality declined from 227 per thousand births in 1949 to 53 per thousand in 1981, and life expectancy dramatically increased from around 35 years in 1948 to 66 years in 1976. Until the 1960s, the government mostly encouraged families to have as many children as possible, especially during the Great Leap Forward, because of Mao's belief that population growth empowered the country, preventing the emergence of family planning programs earlier in China's development. The state tried to incentivize more childbirths during that time with a variety of policies, such as the "Mother Heroine" award, a programme inspired by a similar policy in the Soviet Union. As a result, the population grew from around 542 million in 1949 to 807 million in 1969, corresponding to an average annual growth rate of about 2.45% per year. (If the same rate had continued unabated from 1969 through 2025, China's population in 2025 would be on the order of 2.4 billion people.) Beginning in 1970, citizens were encouraged to marry at later ages and many were limited to have only two children. The devastating Great Chinese Famine (late 1950s to early 1960s) resulted in the deaths of approximately 30 million people. Following the famine, China's leadership saw rapid population growth as a threat to resources and development, fearing a return to food insecurity. Although China's fertility rate plummeted faster than anywhere else in the world during the 1970s under these restrictions, the Chinese government thought it was still too high, influenced by the global debate over a possible overpopulation crisis suggested by publications such as the Club of Rome's 1972 report The Limits to Growth and the Sierra Club's 1968 book The Population Bomb. The fertility rate dropped from 5.9 in the 1950s to 4.0 in the 1970s. Yet, the population still grew at a significant rate: There were approximately 807 million in China in the year 1969; the number then went up to 975 million in 1979, an average annual growth rate of about 2.1%. In the early 1970s, the state introduced a set of birth planning policies. It mainly called for later childbearing, longer time spans between having new children, and giving birth to fewer children. Men were encouraged to marry at age 25 or later, and women were encouraged to marry at age 23 or later.The authorities began encouraging one-child families in 1978, and in 1979 announced that they intended to advocate for one-child families. Ma Yinchu, a founder of China's population planning theory, was also an author of the policy. In the late spring of 1979, Chen Yun became the first senior leader to propose the one-child policy. On 1 June 1979, Chen said that:

… excerpt ends here. Continue reading the full article.

Illustrations

One-child policy: A propaganda painting in Guangdong promotes the idea of a nuclear family with a single child. The text reads "Planned child birth is everyone's responsibility."
A propaganda painting in Guangdong promotes the idea of a nuclear family with a single child. The text reads "Planned child birth is everyone's responsibility."
One-child policy: Birth rate in China, 1950–2021
Birth rate in China, 1950–2021
One-child policy: China's population since 1950
China's population since 1950
One-child policy: Family planning billboard in Chengdu.
Family planning billboard in Chengdu.
One-child policy: The Danshan, Sichuan Province Nongchang Village people Public Affairs Bulletin Board in September 2005 noted that RMB 25,000 in social compensation fees were owed in 2005. Thus far 11,500 RMB had been collected, so another 13,500 RMB had to be collected.
The Danshan, Sichuan Province Nongchang Village people Public Affairs Bulletin Board in September 2005 noted that RMB 25,000 in social compensation fees were owed in 2005. Thus far 11,500 RMB had been collected, so another 13,500 RMB had to be collected.

Worked examples

Example 1 — a first encounter with One-child policy

Start with the simplest possible case. Write down what One-child policy claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to One-child policy before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about One-child policy ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of One-child policy

In research
One-child policy appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses One-child policy in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
One-child policy is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1978 introductions, 1980 introductions, 2015 disestablishments in China, so understanding it makes those chapters shorter.
In everyday life
Look for One-child policy outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study One-child policy in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what One-child policy means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain One-child policy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is One-child policy in simple terms?

The one-child policy (Chinese: 一孩政策 / 独生子女政策; pinyin: yī hái zhèngcè / dú shēng zǐ nǚ zhèng cè) was a controversial population planning initiative in Mainland China implemented between 1979 and 2015 to curb the country's population growth by restricting many families to a single child. The program…

Why does One-child policy matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study One-child policy?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on One-child policy.

Tags

  • 1978 introductions
  • 1980 introductions
  • 2015 disestablishments in China
  • Birth control in China
  • Cold War history of China
  • Demographics of China
  • Human overpopulation
  • One-child policy
  • Political controversies in China
  • Population ecology

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