I'm not exactly sure if a divorce trial is the same as most other civil trials, but I'm going to assume so.
If you've ever been apart of jury duty, you would see every jurer is interrogated to discover if they are sexist, racist, biased, etc.
I had my first and only jury duty last year. I literally sat there alll day watching nearly the entire group of potential jury candidates be called upon and asked a series of questions.
The defendant was accused of raping and molesting his step daughter. He and his attorney had the right to decline jurers if they felt they could potentially be biased. BOTH attorneys did this, and probably went through at least 30 people. ALL women who claimed to have been raped/molested were dismissed, for obvious reasons...
This is how they rid potential "bias" in the courts, by questioning each individual and forcing a unanimous vote.
My butt hurt so much. I was there for probably 10ish hours. Even the judge confessed it was one of the longest jury duty sessions he's ever experienced.
I was never called on, but that was probably because after our first recess, I walked up to the judge and asked if I could be exempt from the whole situation. I do not care to partake in a decision that determines someone's future. It was quite funny. I had my Hello Kitty bag and cute "scene" attire and I couldn't help but smile walking up to his podium. He smiled back.