Perhaps you know someone who always deflects blame onto you. Someone who smirks when caught in a lie, who twists your words until you’re apologising for their mistakes. And over time, you may start to wonder, can someone like this ever truly change?

You could be talking about a narcissist.

When people high in narcissism feel slighted or criticised, it threatens their fragile or inflated self-esteem, prompting them to react with aggression to protect their self-image. Naturally, when confronted with such behaviour, people often demand change from the narcissist.

But sometimes, the impact isn’t just on others – it’s on the narcissist themselves. Narcissists can be particularly prone to feeling rejected, likely due to the very behaviour that pushes people away. So, can narcissists change with psychological intervention?

First, it’s helpful to understand narcissism as viewed in psychology.

Read more: What we've learned about narcissism over the past 30 years

There are generally two types, grandiose and vulnerable. Grandiose narcissists tend to view themselves as superior to others whereas vulnerable narcissists tend to be hypersensitive to criticism. In both cases, narcissists can be arrogant and self-centred. If these traits become extreme, a person may be diagnosed with something like narcissistic personality disorder (NPD) or be described as having pathological narcissism.

Narcissists can act in a passive aggressive way to undermine you. For instance, such people may socially exclude others and withhold love and affection as a form of punishment.

Other times it may not be so subtle. Research has shown that narcissists can be prone to violence, even when unprovoked.........

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