In his testimony, Cosby said he apologized to Constand's mother over the telephone for the sexual encounter with her daughter because he was afraid she thought of him as "a dirty old man". She also said a survivor might not remember every detail of an assault, like how long it lasted or the date, but can remember parts of it like "how someone's tongue felt in their mouth", for example.
He claims the sexual encounter with Andrea Constand was consensual.
It was not immediately clear whether prosecutors might try to introduce Cosby's prior Quaalude testimony at another point in the trial.
WHAT'S NEXT: Prosecutors are expected to use more of the deposition, including Cosby talking about giving quaaludes and alcohol to women he wanted to have sex with.
Do you want to hear Cosby talk?
As Cosby walked from the courtroom, a woman yelled: "Bill Cosby, I love you!" "But my apology was, my God, I'm in trouble with these people because this is an old man and their young daughter".
Valliere has a PhD in clinical psychology from Rutgers University and has treated thousands of sexual assault victims and offenders during 30-plus years in the field.
The jury on Friday heard the comedian's version of the call, in which he admitted to apologising to Ms Constand's mother - but only for fear of coming off as a "a dirty old man".
Constand alleges that Cosby drugged and sexually assaulted her in his home when she was an employee at his alma mater, Temple University.
He said the effects Constand described in her testimony "could be consistent with ingestion" of Benadryl. The Philadelphia trial is the only criminal case against Cosby. "It's not that common where a victim feels that righteously angry to want "justice" because it's much more complicated with consequences involved."However, Valliere's bias in the case was questioned by Cosby attorney Brian McMonagle, who produced a Facebook post from Valliere's clinic commenting on a news article about the case."Victory", the post read". The 79-year-old could spend the rest of his life in prison if convicted. When asked whether he would "use them for young women you wanted to have sex with", he answered, "Yes", but said he never gave the drugs to a woman without her knowledge.
McMonagle sought a mistrial, arguing Valliere, under questioning by Feden, made references to Cosby when she was supposed to testify only in general terms about victim behavior.
For the jury, this could be the closest it comes to hearing from Cosby himself because he has stated he will not take the stand.
Cosby was deposed in connection with a lawsuit brought against him by Constand over four days in September 2005 and March 2006. Would jurors reconsider why Constand may have repeatedly called Cosby after the assault? "If it's a well-known person, the victim takes on a lot of responsibility for that person's reputation".
The prosecution rested their case Friday, which means the trial will be turned over to Cosby's defense attorney - who still isn't ruling out the possibility that their client might testify.
Constand, 44, testified that Cosby penetrated her with his fingers against her will after giving her pills that left her so limp that she was unable to push him away or tell him to stop. Police Sgt. Richard Schaffer read aloud from Cosby's statements in a 2005 interview with police. Cosby had been asked, according to the transcript.
In earlier testimony Friday, prosecutors had hoped to beat back questions about why Constand had taken a year to report the alleged attack to authorities. How do I know what these people are talking about.
His interactions with fans outside the courthouse, coupled with a parade of show business friends who have attended the trial in support, have signaled he is intent on repairing his public image.