A SENIOR MANAGER at Tusla raised concerns over court assessors subjecting children to a controversial practice known as “immersion therapy”, which is used to encourage children to rebuild relationships with an estranged or abusive parent. The practice is being used by some court-appointed assessors in dozens of cases where children are removed from the custody of one parent – usually the mother – with the assessors telling Irish courts that she is “alienating” the children from their father.