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Life imprisonment

Life imprisonment is a science 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 Life imprisonment rather than just read about it. In short: Life imprisonment (or a life sentence) is any sentence of imprisonment in which the convicted individual will remain incarcerated for the rest of their natural life (or until pardoned or commuted to a fixed term), with or without the possibility of release. Crimes that are punishable by life imprisonment are considered extremely serious and usually violent.

Life imprisonment — main illustration
Life imprisonment — illustration

Key takeaways

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

Reference excerpt

Life imprisonment (or a life sentence) is any sentence of imprisonment in which the convicted individual will remain incarcerated for the rest of their natural life (or until pardoned or commuted to a fixed term), with or without the possibility of release. Crimes that are punishable by life imprisonment are considered extremely serious and usually violent. Examples of these crimes are murder, torture, terrorism, child abuse resulting in death, rape, espionage, treason, illegal drug trade, human trafficking, severe fraud and financial crimes, aggravated property damage, arson, hate crime, kidnapping, burglary, robbery, piracy, aircraft hijacking, genocide, war crimes, and crimes against humanity.

Law passes Common law murder is a crime for which life imprisonment is mandatory in several countries, including some states of the United States. Life imprisonment (as a maximum term) can also be imposed, in certain countries, for traffic offences causing death. Life imprisonment is not used in all countries; Portugal was the first country to abolish life imprisonment, in 1884, and is the only country in the world that considers this type of punishment for the duration of a convict's natural life – both for minors and adults, with or without the possibility of parole – a violation of human rights. All other Portuguese-speaking countries and Macao also have maximum imprisonment lengths, as do all Spanish-speaking countries in the Americas except for Cuba, Peru, Argentina, Chile and the Mexican state of Chihuahua. Other countries that do not practice life sentences include Mongolia in Asia and Norway, Iceland, Croatia, Bosnia and Herzegovina, Slovenia, Andorra and Montenegro in Europe. Where life imprisonment is a possible sentence, there may also exist formal mechanisms for requesting parole after a certain period of prison time. This means that a convict could be entitled to spend the rest of the sentence (until that individual dies) outside prison. Early release is usually conditional on past and future conduct, possibly with certain restrictions or obligations. In contrast, when a fixed term of imprisonment has ended, the convict is free. The length of time served and the conditions surrounding parole vary. Being eligible for parole does not necessarily ensure that parole will be granted. In some countries, including Sweden, parole does not exist but a life sentence may – after a successful application – be commuted to a fixed-term sentence, after which the offender is released as if the sentence served was that originally imposed. In some countries around the world, courts have been given the authority to pass prison terms that may amount to de facto life imprisonment, meaning that the sentence would last longer than the human life expectancy. For example, in one American case a court imposed a sentence of life plus 1,000 years. Courts in South Africa have handed out at least two sentences that have exceeded a century, while in Tasmania, Australia, Martin Bryant, the perpetrator of the Port Arthur massacre in 1996, received 35 life sentences plus 1,035 years without parole. In the United States, James Holmes, the perpetrator of the 2012 Aurora theater shooting, received 12 consecutive life sentences plus 3,318 years without the possibility of parole. In the case of mass murder in the US, Parkland mass murderer Nikolas Cruz was sentenced to 34 consecutive terms of life imprisonment (without parole) for murdering 17 people and injuring another 17 at a school. Any sentence without parole effectively means a sentence cannot be suspended; a life sentence without parole, therefore, means that in the absence of circumstances such as pardon, amnesty or humanitarian grounds (e.g. imminent death), the prisoner will spend the rest of their natural life in prison. In several countries where de facto life terms are used, a release on humanitarian grounds (also known as compassionate release) is commonplace, such as in the case of Abdelbaset al-Megrahi. Since the behaviour of a prisoner serving a life sentence without parole is not relevant to the execution of such sentence, many people among lawyers, penitentiary specialists, criminologists, but most of all among human rights organizations oppose that punishment. In particular, they emphasize that when faced with a prisoner with no hope of ever being released, the prison has no means to discipline such a prisoner effectively. The European Court of Human Rights (ECtHR) has considered the issue of life imprisonment without the possibility of parole, particularly in relation to Article 3 of the European Convention on Human Rights, which prohibits inhuman or degrading treatment or punishment. The Court has ruled that irreducible life sentences (i.e. an imprisonment for life-regime without parole) violate Article 3. However, the Court has also stated that life sentences can be imposed without breaching Article 3 if there are guarantees of review and release. In some countries, young adults (18-21) may be able to receive life sentences without the possibility of parole. The use of those sentences has been the subject of continuous ethical, scientific, and legal debate. There has been research in developmental neuroscience on maturity levels in the adolescent brain. Most of the research signifies that adolescent regions of the brain involved in impulse control and judgment are not developed to the extent they need to be to make sound decisions. These findings bring up discussions about how appropriate it is to send youth to life without parole. A few countries allow for a minor to be given a life sentence without parole; these include but are not limited to: Antigua and Barbuda, Argentina (only over the age of 16), Australia, Belize, Brunei, Cuba, Dominica, Saint Vincent and the Grenadines, the Solomon Islands, Sri Lanka, and the United States. According to a University of San Francisco School of Law study, only the US had minors serving such sentences in 2008. In 2009, Human Rights Watch estimated that there were 2,589 youth offenders serving life sentences without the possibility for parole in the US. Since the start of 2020, that number has fallen to 1,465. The United States has the highest population of prisoners serving life sentences for both adults and minors, at a rate of 50 people per 100,000 (1 out of 2,000) residents imprisoned for life.

… excerpt ends here. Continue reading the full article.

Illustrations

Life imprisonment: Mugshot of Burton Phillips, sentenced to life imprisonment for bank robbery, 1935
Mugshot of Burton Phillips, sentenced to life imprisonment for bank robbery, 1935

Worked examples

Example 1 — a first encounter with Life imprisonment

Start with the simplest possible case. Write down what Life imprisonment claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Life imprisonment 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 Life imprisonment 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 Life imprisonment

In research
Life imprisonment appears in science 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 Life imprisonment 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
Life imprisonment is common in secondary-school and first-year university syllabi. It links to neighbouring topics Crime-related lists, Duration, Life imprisonment, so understanding it makes those chapters shorter.
In everyday life
Look for Life imprisonment 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 Life imprisonment in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Life imprisonment 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 Life imprisonment out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Life imprisonment in simple terms?

Life imprisonment (or a life sentence) is any sentence of imprisonment in which the convicted individual will remain incarcerated for the rest of their natural life (or until pardoned or commuted to a fixed term), with or without the possibility of release. Crimes that are punishable by life impris…

Why does Life imprisonment matter?

Because it connects several science 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 Life imprisonment?

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 Life imprisonment.

Tags

  • Crime-related lists
  • Duration
  • Life imprisonment
  • Penology
  • Sentencing (law)

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