END USER DEMAND. Experimental Psychology. (Contributors: R.A. Winett, K.D. Kramer, W.B. Walker, S.W. Malone, M.K. Lane; J.G. Cross; D.A. Gautschi, V.R. Rao). Economic Approaches to Consumer Choice. (Contributors: D.A. Dunn, H.S. Oh; N. Curien, A. de Fontenay). Econometrics/Discrete Choice. (Contributors: L.D. Taylor, D. Kridel; J.P. Kling, S.S. van der Ploeg; T. Atherton, M. Ben-Akiva, D. McFadden, K. Train). Measurement. (Contributors: G. De Soete, J. D. Carroll; R.A. Harshman, M.E. Lundy; H. Feger). ECONOMETRICS OF MARKET BEHAVIOR. Theory. (Contributors: R. Davidson, J.G. MacKinnon; P.A. Ruud; E. Ghysels). Application. (Contributors: D.J. Aigner, D.G. Fiebig; A.C. Larson, D.E. Lehman, D.L. Weisman; J.G. Veitch; T.A. Cameron, K.J. White). USER MARKET STRUCTURE. Access and Market Structure. (Contributors: J. Farrell; B. Von Hohenbalken, D.S. West; C.P. Buxton, P. Cartwright; J.H. Rohlfs, R.J. Gilbert). Pricing and Regulation. (Contributors: B. Bental, M. Spiegal; M.A. Einhorn; W.E. Diewert).