Domestic violence expert to testify in Arias trial

FILE - In this March 7, 2013 file photo, Jodi Arias answers written questions from the jury in Maricopa County Superior Court in Phoenix during her trial for the 2008 killing of her boyfriend, Travis Alexander. Psychologist Richard Samuels, who diagnosed Arias with post-traumatic stress disorder and amnesia, returns to the witness stand for a sixth day of testimony Monday, March 25, 2013. (AP Photo/The Arizona Republic, Tom Tingle, Pool, File)

PHOENIX (AP) — A domestic violence expert is testifying in Jodi Arias' murder trial.

The witness resumes testimony Tuesday after detailing her expertise Monday.

Earlier Monday, a psychologist who diagnosed Arias with post-traumatic stress disorder and amnesia concluded nearly six days of testimony. The prosecutor questioned his credibility and accused the witness of forming a relationship with Arias that biased his diagnosis.

Psychologist Richard Samuels denied the accusations and stood by his conclusions.

Arias faces a possible death sentence if convicted of first-degree murder in the 2008 killing of Travis Alexander in his suburban Phoenix home. Authorities say she planned the attack on her lover. Arias initially denied any involvement then later said it was self-defense.