Dr Janeen Demarte told police that the computer contained notes that pertained to the murder trial.
The psychologist instead said she believe that the accused had a borderline personality disorder.
The clinical psychologist, who graduated from Michigan State University in 2009, gave expert testimony in April that she did not believe Jodi Arias has been abused by her slain boyfriend, Travis Alexander, who was murdered in 2008.
Arias is charged with first-degree murder in the 2008 stabbing and shooting death of Alexander.
The prosecution claims she planned the attack in a jealous rage but the Arias' defense team says it was self-defense.
Now information has emerged regarding the theft of the computer that belonged to the health care professional preparing to give expert testimony in the Arias trial.
Police arrived at the Phoenix home of Dr Demarte on February 6, after a home alarm tipped them off to a possible burglary at around 9:30am, according to KSAZ-TV.
When officials arrived, they found no forced entry and neighbors have said they didn't see or hear
Demarte, a clinical psychologist, testified in April saying that in her professional opinion, Arias had not been abused by her boyfriend.
She told the court that the defendant did not exhibit signs of post traumatic syndrome, which the Arias defense team had claimed was to blame for the murder.
The defense team for the woman has alleged that Alexander had grown physically abusive in the months before she killed him, once even choking her into unconsciousness, but she kept seeing him because she was in love.
However, there has been no evidence or testimony during the trial to corroborate her stories that Alexander was violent or owned a gun - the very gun she says she used to shoot him.
The defense has portrayed Alexander as a cheating womanizer who used Arias for sex and abused her physically and emotionally.
Prosecutors have depicted Arias as an obsessed ex-girlfriend who couldn't come to grips with the ending relationship.
Alexander suffered nearly 30 knife wounds, was shot in the forehead, and had his throat slit. Arias' palm print was found in blood at the scene, along with nude photos of her and the victim from the day of the killing.
She said she recalls Alexander attacking her in a fury after a day of sex. She said she ran into his closet to retrieve a gun he kept on a shelf and fired in self-defense but has no memory of stabbing him.
Closing arguments in the four-month murder trial wrapped up on Friday as a jury now deliberates to determine the fate of the 32-year-old Arias.
She could receive the death penalty if she is found guilty.
Read more: http://www.dailymail.co.uk/news/article-2319703/Jodi-Arias-murder-trial-Mystery-laptop-stolen-psychologist-Dr-Janeen-Demarte-weeks-testified.html#ixzz2SR6uS9ps
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