Oklahoma County District Judge Donald Deason issued the ruling Tuesday in the case of Stephen Paul Wolf. Wolf was arrested Nov. 16 after a police officer found him straddling his wounded son in the family home in Nichols Hills.
A state psychologist examined Wolf Jan. 6 because of concerns about whether he could aid in his defense.
Deason says a report by the psychologist indicated Wolf was competent.
Wolf's attorney, Mack Martin, and Assistant District Attorney Suzanne Lister said they agreed with the report's findings.
Wolf told Deason he is taking mood-stabilizing and anti-psychotic drugs as well as other medication for high blood pressure.