AUBURN – Roland “Jerry” Poirier apparently made sexual advances to several young men besides his son, Scott, who told police he fatally shot his father because of sexual abuse, a psychologist testified Tuesday.

Debra Baeder said she concluded Poirier, 35, of Sabattus was truthful when he told her his father had performed an unwanted sex act on him when he was 15. Documented interviews with family members and friends revealed allegations of a string of victims, she testified.

Baeder had been ordered by an Androscoggin County Superior Court judge to evaluate Poirier’s competence to stand trial and his state of mind at the time of the shooting in 2006.

Justice Joyce Wheeler is expected to rule early this morning before the trial resumes about whether other alleged victims of the elder Poirier may testify.

“What we got in today through her is the tip of the iceberg, and then tomorrow I’m going to be asking (Wheeler) if we can put the whole damn iceberg in,” said Scott Poirier’s attorney, Steven Peterson, said Tuesday.

The defense attorney’s private investigator, he said, has interviewed several people who approached him with their stories of advances by Roland Poirier.

Baeder also told the jury on the fourth day of the murder trial that she didn’t believe Poirier was mentally ill or suffered from an “abnormal condition of mind” when he shot his father with a hunting rifle at the man’s 65th birthday gathering with family in his dining room on Grove Street in Lewiston on Nov. 8, 2006. Scott Poirier is accused of standing outside the home that evening and shooting his father through a window.

Scott was “very depressed,” she said. He likely suffered from post-traumatic stress disorder, was abusing drugs and alcohol, was angry and suicidal. At some point his suicidal thoughts became homicidal thoughts, Baeder said.

“In all likelihood, someone was going to die,” she said.

But, when asked by Assistant Attorney General Lisa Marchese whether those conditions would have affected his ability to engage in goal-oriented conduct, Baeder said, “No.”

Baeder’s testimony mirrored remarks made by a court-ordered psychiatrist last week.

For the jury to find Poirier guilty of murder, Marchese must prove beyond a reasonable doubt that he acted knowingly or intentionally when he caused his father’s death.

An abnormal condition of mind might apply to someone who sleepwalks or suffers from a seizure, Baeder said. Their actions wouldn’t be considered goal-oriented or consciously directed.

Alcohol had impaired the quality of Poirier’s decision-making ability, Baeder said. Poirier said he had drunk roughly a half-dozen airline-size bottles of alcohol and wine before fatally shooting his father.

Baeder said Poirier, in his interview with her, couldn’t recall details between the time he looked at the rifle at his home and the time it fired the bullet that killed his father.

She said she didn’t have an explanation for his lapse in memory.

For that reason, she said she relied on a recording of the interview of Poirier conducted by Maine State Police Detective Mark Lopez on the night of the shooting.

In that interview, Poirier describes the night’s events and even sketches the scene of the shooting.

During that interview, Poirier agrees with Lopez that he brought the rifle to his father’s house specifically to shoot him.

Baeder said that exchange “strongly” affected her opinion about Poirier’s state of mind at the time of the shooting. “It was very compelling to me,” she said.

Peterson said he hopes to give the jury options other than a murder verdict. A Maine intoxication statute, he said, would allow the jury to consider the alternative of a manslaughter charge.

While cross-examining Lopez, Peterson asked why the detective didn’t follow up by asking whether Poirier intended to kill his father.

Peterson told reporters later that his client was exhausted and emotionally drained at the time he made the statement and may have been under the influence of alcohol. Poirier agreed with the detective’s “suggestive question,” but didn’t offer the statement himself, Peterson noted.