Lawdork brings us today’s preview of the case:

On Friday, the American Foundation for Equal Rights sends word that, testimony of plaintiff witnesses will continue in the Perry v. Schwarzenegger trial over the constitutionality of Proposition 8. This is the fifth day of a trial that could last well into three weeks, based on the announcement from the Plaintiffs’ lawyers today that they expect to wrap up their case, assuming the pace of the first four days continues, by next Wednesday.

Up on Friday are:

* Michael Lamb, Ph.D, a Professor and Head of the Department of Social and Developmental Psychology at Cambridge University, who will testify about gay and lesbian parenting and its impact on the adjustment of children and adolescents, and the benefits to children and adolescents if their same-sex parents were allowed to marry.
* Helen Zia, a lesbian author who will testify about her sexual orientation, her experiences with discrimination, and the effects of being denied the right to marry her longtime partner.
* M.V. Lee Badgett, Ph.D., a professor of economics at the University of Massachusetts, Amherst, to testify about the private harms caused by Prop. 8 and the impact of same-sex marriage on the marriages of different-sex couples.