How many times was this done?

An excerpt from a study in New Zealand:

An interesting experiment illustrating the use of protection orders against fathers was presented in England in 1995. In this case, a television program hired an actress to go to 4 lawyers for legal advice.

She said she had been career-minded and that her partner had taken the greater responsibility as a parent. She also ‘confessed’ that she had had an extra-marital affair.
Simultaneously, an actor posing as a worried dad was visiting four different solicitors. His story was that, although both he and his wife had been employed, he had been the more involved parent, collecting his son every evening from the minder, for example.
He also said that he had remained sexually faithful, while his wife had had an affair. All the lawyers advised the woman to go for sole residence (custody), and she was advised that she would get the child.

It was suggested that she play the ‘violence card’, although she insisted there had been no violence.
The man, on the other hand, was told he didn’t have a chance of keeping his son.
(Burgess, 1997, p.197:: Burgess, A. (1997). Fatherhood Reclaimed: The Making of the Modern Father, Great Britain: Mackays of Chatham Plc.)

OK, this is an obvious experiment. Done a decade ago, and things still haven't changed??
How many times was it done?

This is clearly unethical behaviour. The 4 attorneys who counselled the female actor were telling her to perjure herself.
Better, is this stuff taught in law school? Is this what's taught in Ethics classes?

Who is going to try to tell me this sort of experiment hasn't been done in Australia?
Where was it done? And what happened to the results?