Although this statute did use the word "shall", the Court did not interpret it to mean that a decision that takes into account these criteria should for that reason alone embody the full protections of an adversarial hearing. The Court ruled that the prisoner's opportunity to make a statement on his own behalf minimized the risk of error and thus satisfied due process because the Board had before it the prisoner's entire file. Due process did not require the Board to articulate the specific evidence on which it had relied, because this would tend to make the hearings more adversarial in nature. The fact that the Board communicated the reasons for its denial, couching its explanation in terms of guidance for the prisoner's future growth, was sufficient. "The Nebraska procedure affords an opportunity to be heard, and when parole is denied it informs the inmate in what respects he falls short of qualifying for parole; this affords the process that is due under these circumstances. The Constitution does not require more."