Parts of the brain responsible for decision-making and impulse control are still developing during a person's teens
The age of criminal responsibility in England, Wales and Northern Ireland could be "unreasonably low" given the emerging understanding of how slowly the brains of children mature, according to a report by the Royal Society. Widespread differences between individuals also mean that the cut-off age at which children are deemed fit to stand trial, at 10 years old, might not be justifiable in all cases.
The comments are part of an assessment carried out by a panel of scientists, lawyers and ethicists of how developments in neuroscienceand brain imaging should inform the future practice of law. Neuroscience and the Law, published on Tuesday, examines how scientific understanding of the brain has advanced in recent decades and the light this has shed on behaviour. The report also assesses the reliability of lie detector tests.
In England, Wales and Northern Ireland, a child is deemed fit to stand trial at the age of 10, but in recent years it has been shown that important changes in the brain's neural circuits go on well into a person's teens. In Scotland children cannot be convicted until they are 12.
"A number of psychologists have already shown that adolescents are not wholly responsible individuals and are inclined to take risks and behave in irresponsible ways," said Nicholas Mackintosh, an emeritus professor in the department of experimental psychology at the University of Cambridge and chair of the Royal Society panel. "What neuroscience has shown in the last 10 years is that this is at least associated with the fact that the brain continues to develop throughout adolescence."
In particular, the prefrontal cortex, which is responsible for decision-making, impulse control and cognitive control, is among the slowest parts of the brain to mature and is not fully developed until around the age of 20. "Neuroscience adds to the evidence that a 10 or 12 or 15-year-old does not have a fully adult brain in many important respects," said Mackintosh.
The age of criminal responsibility in England, Wales and Northern Ireland could be "unreasonably low" given the emerging understanding of how slowly the brains of children mature, according to a report by the Royal Society. Widespread differences between individuals also mean that the cut-off age at which children are deemed fit to stand trial, at 10 years old, might not be justifiable in all cases.
The comments are part of an assessment carried out by a panel of scientists, lawyers and ethicists of how developments in neuroscienceand brain imaging should inform the future practice of law. Neuroscience and the Law, published on Tuesday, examines how scientific understanding of the brain has advanced in recent decades and the light this has shed on behaviour. The report also assesses the reliability of lie detector tests.
In England, Wales and Northern Ireland, a child is deemed fit to stand trial at the age of 10, but in recent years it has been shown that important changes in the brain's neural circuits go on well into a person's teens. In Scotland children cannot be convicted until they are 12.
"A number of psychologists have already shown that adolescents are not wholly responsible individuals and are inclined to take risks and behave in irresponsible ways," said Nicholas Mackintosh, an emeritus professor in the department of experimental psychology at the University of Cambridge and chair of the Royal Society panel. "What neuroscience has shown in the last 10 years is that this is at least associated with the fact that the brain continues to develop throughout adolescence."
In particular, the prefrontal cortex, which is responsible for decision-making, impulse control and cognitive control, is among the slowest parts of the brain to mature and is not fully developed until around the age of 20. "Neuroscience adds to the evidence that a 10 or 12 or 15-year-old does not have a fully adult brain in many important respects," said Mackintosh.