eli5: How can handwriting analysis be useful in solving a case? Can’t the suspect simply switch up their writing style when under scrutiny?

Question

eli5: How can handwriting analysis be useful in solving a case? Can’t the suspect simply switch up their writing style when under scrutiny?

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Answer 1

You could obtain other writing samples written before the piece of writing you are investigating and see if they match, rather than relying on a suspect to provide a current sample once they’re already under suspicion.

Also, there are features of handwriting that persist even when a person tries to change their handwriting. And while a handwriting analysis may not be the nail in the coffin, it could help narrow or identify suspects