Sheilagh Hodgins said punishment should be appropriate and not too harsh.

Sheilagh Hodgins said punishment should be appropriate and not too harsh. (Getty Images/Blend Images)

Signs of psychopathy can be observed in children as early as age three or four but that doesn’t mean they will develop into problem behaviours later in life, according to a University of Montreal professor.

Sheilagh Hodgins studies the development of serious mental disorders and antisocial disorders.

Recently, an expert witness testified at the sentencing hearing for the killer of Hannah Leflar that the accused, who was 16 at the time of the killing, displayed psychopathic tendencies.

Hodgins told CBC Radio’s The Morning Edition that about four per cent of boys and one per cent of girls will have observable conduct problems. Among…

Mayra Rodriguez

Mayra Rodriguez

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Mayra Rodriguez