Yes. Justice is biased against the laws, public attitudes, posturing, perceptions, and family court decisions that pretend mothers and fathers are equivalent, that it’s all gender neutral, that children "need" what shared parenting has to offer, and that the government has any business doing family engineering. See Myths and Facts.
Justice also is biased against the dangerous game of Russian Roulette, even though the great majority of the chambers in that gun are empty. Research "Myths and Facts" pages These pages, and the pages on custody evaluation and the joint custody, contain literally thousands of research citations. The sociological and psychological research on families and child well-being impacts public policy and the issues of child custody in family law. The research frequently is misrepresented, and mis-cited by mental health professionals, lawyers, forensic psychologists and others, as well as interest groups lobbying for laws.
