A juvenile whose defense to the allegations in the complaint is that of alibi or mental disease or defect shall give written notice to the county or district attorney and the court of such juvenile’s proposed defense not less than 14 days prior to the adjudicatory hearing. For good cause shown the court may allow such notice to be given at a later time. The notice shall include the names and addresses of witnesses that the juvenile plans to call to provide evidence in support of the defense. Upon receipt of the notice of the defense of mental disease or defect, the court may order an independent examination of and report on the juvenile.