(Phoenix, AZ)  --  A behavioral analyst and body language expert says she believes convicted murderer Jodi Arias wants the death penalty.  

Dr. Lillian Glass says Arias came off as arrogant and entitled in an Arizona courtroom today.  On the stand, Arias said the 2008 murder of her lover, Travis Alexander, was the worst thing she's ever done and she promised to use her time behind bars to contribute to charities and community causes.  Arias told jurors she lacked perspective when she told a TV reporter she would prefer the death penalty.  She said being sentenced to death would hurt her family more than anyone else.