  Magnetoresistance results are presented for p-SiGe samples on the metallic
side of the B=0 metal-insulator transition. It was possible to separate the
weak localisation and Zeeman interaction effects but the results could not be
explained quantitatively within the framework of standard theories for quantum
corrections of a weakly interacting 2-dimensional system. Analysis using a
theory for interaction corrections at intermediate temperatures, recently
proposed by Zala, Narozhny and Aleiner, provided values of the Fermi liquid
parameter $F_0^{\sigma}$ of order -0.5. Similar values also explain the linear
increase of resistance with temperature characteristic of the metallic phase. e
