The article presents a brief outline of papers presented at the thirteenth annual meeting of The Society for Psychophysiological Research that was held between October 25 and 28, 1973 at the Galvez Hotel and Motel in Galveston, Texas. Members of the program committee were professors Peter J. Lang, Hiram E. Fitzgerald and David T. Graham. Some of these papers include "Heart Rate Variability and Heart Rate Conditioning in Human Newborns," by L.E. Stamps, "Habituation and Dishabituation of Cardiac Orienting in Human Newborns," by C.D. Adkinson and W.K. Berg and "Developing Changes in Response Recovery," by E. Scott and M. Lewis.