Dr Phil Anderson: Northern Ireland’s minimum age of criminal responsibility must be raised

Dr Phil Anderson: Northern Ireland's minimum age of criminal responsibility must be raised

Dr Phil Anderson

Dr Phil Anderson, consultant in child, adolescent and forensic psychiatry, makes the case for an increase in Northern Ireland’s minimum age of criminal responsibility.

The minimum age of criminal responsibility (MACR) is the lowest age at which a child is deemed to have the capacity to commit a criminal offence. Northern Ireland, England and Wales sit in notoriety as having the lowest MACR in Europe, at a mere 10 years old. This means a 10-year-old child would be regarded as indistinguishable from an adult when being charged and tried for criminal offences.

This un-lofty position is in spite of the considerable pressure of international human rights standards. For example, the United Nations Committee on the Rights of the Child (UNCRC) considers any limit below the age of 12 years as being “unacceptable”.

Furthermore, since the 1990s, the UNCRC has recommended on multiple occasions that the UK needs to increase its MACR.

In this blog post, I will explore what I believe are the following three key reasons for raising the MACR limit in Northern Ireland:

  1. Scientific developments;
  2. The complex needs of young persons in youth justice;
  3. Ethical considerations.

Scientific developments

There have been significant advances in our understanding of adolescent brain development, over the last 30 years. This is partially attributable to the development of new brain imaging techniques, such as Magnetic Resonance Imaging (MRI).

Historically, the scientific consensus was that the first eight years of childhood, were the most critical period of brain development, after which there was relatively limited further development. However, the current scientific consensus is that there is a second period of substantial brain development in adolescence; this is a complex process that starts at the onset of puberty and continues into the mid-20s.

These changes in the adolescent brain are readily visible on MRI with significant changes in the grey and white matter components of the brain. MRI scans also demonstrate that the activation of brain regions significantly differs between adolescents and adults, when they are completing the same tasks. Furthermore, the adolescent brain is now recognised to be highly plastic and having substantial relative capacity for positive change with consistent and well targeted interventions.

A brief summary of the implications of these adolescent brain changes include a substantial predisposition towards:

  • Taking risks versus safety;
  • Preoccupation with peer influence;
  • Hypersensitivity to social exclusion.

The relevance of these brain findings to youth justice is that the adolescent population is demonstrably and substantially different to the adult population. Legislative approaches to issues, such as MACR, needs to reflect the current scientific understanding of the brain

The complex needs of young persons in youth justice

Young persons involved with the youth justice system are recognised to have very high rates of complex needs, which are often undiagnosed and poorly understood. A young person with complex needs has two or more needs affecting their mental, emotional, physical or social well­ being. Such needs typically are severe, interact and difficult to manage.

There is an abundance of scientific research regarding the very high rates of complex needs of young persons in the youth justice system:

  • Young persons in contact with youth justice have mental and emotional health difficulties that are three times greater than non­ offending peers (Khan, 2010)
  • Studies indicate an 11-fold increase in the likelihood of being arrested for an aggressive offence for young persons traumatised in early life (English, 2002)
  • As many as 60–90 per cent of young persons who offend have speech and language disorders (Hughes, 2012)
  • Approximately 25 per cent of young persons who offend have very low IQs of less than 70 (Hughes, 2012)
  • Autism Spectrum Disorder (ASD) has a prevalence of five per cent in youth custody compared with one to two per cent in the general population (Beaudry, 2020)

The complex needs of these young persons need to be met through health and social care responses, rather than through criminal justice.

Related to this, the Stormont Executive is yet to fully embrace the public health approaches to youth violence, notably developed in Scotland, which have achieved substantial reductions in violent offending.

Ethical considerations

The issue of how to legislate for young person’s emerging capacity is complex and has been subject to significant debate over the last 30 years.

Over this period, there has arisen a substantial legislative disconnect in Northern Ireland between the lowest ages we recognise that young persons have the capacity for criminal decision-making (10 years) versus health and social decision-making (14–16 years).

From an ethical perspective, it seems ridiculous that a young person must be at least 14 years old to make a decision about being prescribed the oral contraceptive pill but could be held responsible for the criminal offence of theft.

Notwithstanding, the decision-making of a young person regarding a serious health issue is likely to be made with support from qualified professionals, communicated in an appropriate manner, with adequate time and within the correct environment. Whereas, criminal decision­-making is typically made by young persons with unmet complex needs, in an impulsive manner, negatively influenced by peers and illicit substances.

The UNCRC (1989) requires that domestic laws are developed “in a manner consistent” with “the emerging capacities of the child”. However, Dr Alexandra Lewis of the Royal College of Psychiatrists (RCPSYCH) communicated in written evidence to the Justice Select Committee in 2020 that the legislation governing MACR in Northern Ireland is “incompatible” with the current scientific understanding of brain function and “the challenges facing children due to their developmental immaturity”.


Injustice anywhere is a threat to justice everywhere” – Martin Luther King Junior.

A low MACR that seeks criminal justice solutions to what are health and social care issues impacts all of us by consolidating vulnerable children with complex needs into the justice system. Whilst research indicates that the criminalisation of children has a tendency to increase rather than reduce their offending behaviour (McAra, 2007).

Northern Ireland is increasingly beyond the pale with respect to its extremely low MACR. This limit is completely out of line with international rights standards, other European countries and the overwhelming scientific consensus of the differences between the adolescent and adult brains.

The legislative disconnect between the lowest ages we recognise that young persons have the capacity for criminal decision-making versus health and social care decision-making is neither ethical nor just. I strongly recommend the Northern Ireland Executive to urgently review these issues and consider a co-ordinated approach across capacity legislation (health, social, criminal) towards a unified age of capacity.

Furthermore, I strongly recommend the Northern Ireland Executive needs to fully recognise the complex needs of young persons involved with youth justice. It needs to fully adopt a public health approach to youth violence, as developed by the Violence Reduction Unit (VRU) Scotland, which has achieved reduction in violence crime by more than 35 per cent and a reduction in homicide rates by two-thirds.

  • Dr Phil Anderson is a consultant in child, adolescent and forensic psychiatry. This article was first published by Queen’s Policy Engagement in partnership with the Children’s Law Centre (CLC) and other organisations.
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