Selecting an expert witness in a custody case

From the New York Law Journal (Law.com): “The three critical issues to think about at the outset are: (1) What expertise should the expert have? (2) Should the expert be a person already known to the court before your selection? (3) Is it a good idea to use an expert you personally have previously worked with?“

Link: https://www.law.com/newyorklawjournal/2019/11/18/how-to-select-an-expert-in-a-custody-case/?slreturn=20191019103035