specially concurring.
I concur in all portions of the opinion except part V, the section dealing with harmless error. Since the majority opinion indicates (in part I) that the improperly admitted confession was “involuntary,” the error is constitutional. Therefore, I believe the court has used the improper test for ascertaining whether the error was harmless. The reasons for this are set forth in my dissenting opinion in State v. Adamson, 136 Ariz. 250, 665 P.2d 972 (1983).