The BIC test,in principle, undermines the position of parents, because, in principle, it removes the presumption that parents are better placed to advance the welfare of the child than the stranger who is an expert (professionally) employed in a field of childcare studiesand, instead, espouses a presumption that the welfare of children is something that canlegitimately be determined by a court on the basis of expert testimony. This hugely increasesthe importance that would be attached to the evidence of psychologists and social workerswho are strangers to the child and have at most a temporary professional interest in the
child’s welfare.
It also means that parents would have to re-cast their arguments as arguments that could be supported by expert testimony, and, at best, this would mean that they would have toargue, from a psychological point of view, why their position is a position that the experts could acknowledge as being in the best interest of the child.