Baljit Ubhey, of the Crown Prosecution Service, said there was evidence that Collins subjected Larke to "physical, psychological and verbal abuse".

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Abu Ghraib came to world attention after the release in 2004 of photographs showing the physical, sexual and psychological abuse of Iraqi prisoners by US guards.

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"Their poverty has been exacerbated throughout their lives by the denial of educational opportunity which they suffered while incarcerated in the laundries, as well as the psychological and physical injury caused by the abuse, " it said.

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The same studies show that domestic work conceals a wide range of abuse and exploitation, including physical, psychological and sexual violence.

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"Abuse can take numerous forms: physical, emotional, psychological, and financial and it's about time we opened up this debate and challenged the attitudes that exist, for the good of the whole of Welsh society, " she said.

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