In In re Gladys R. (1970) 1 Cal.3d 855, the juvenile court reviewed a social study prior to the jurisdictional hearing. The social study discussed "matter not relevant to the jurisdiction of the court and therefore inadmissible at the hearing on that issue. (Welf. & Inst. Code, 701.)" (Gladys R., supra, 1 Cal.3d at pp. 858-859.) The minor's attorney did not object. Our state's highest court concluded that "the failure of the minor's attorney to object at the juvenile court hearing to the court's premature use of the social study does not bar the consideration of this issue on appeal; we cannot expect an attorney to anticipate that an appellate court will later interpret the controlling sections in a manner contrary to the apparently prevalent contemporaneous interpretation." (Gladys R., supra, 1 Cal.3d at p. 861.)