The authors demonstrate how exponential smoothing can play a role in the identification of the intervention component of an interrupted time-series design model that is analogous to the role that the sample autocorrelation and partial autocorrelation functions serve in the identification of the noise portion of such a model. (Author/BW)

The concerns about the use of a modified scree test in analyzing data from Delphi surveys may not be important if the scree test data are weighted. Factors important to the study can be incorporated into the test, and the ordinate on the graph can be labeled accordingly. (SLD)

Three problems affecting the use of a modified scree test in analyzing Delphi survey data are discussed: (1) the adequacy of the criterion; (2) the complexity of decision making; and (3) the nature of the Delphi panel. Using the modified scree test with these considerations in mind is suggested. (SLD)