South Australia has become just the third state to criminalise coercive control as a form of domestic violence.
The new laws, which passed state parliament today, aim to address controlling behaviour within intimate relationships, but will not come into effect for two years.
The legislation targets actions such as restricting a partner's freedom of movement, their ability to engage in activities, and their autonomy in making choices about their own body.
"It's not every day that you pass legislation that will save lives," Attorney-General Kyam Maher said.
"This will save lives."
The passage of the legislation has been welcomed by Sue and Lloyd Clarke, whose daughter Hannah and her three children were murdered in Queensland five years ago.
The Clarkes have since become advocates for r