Conductive compositions which are useful as thermally conductive compositions and may also be useful as electrically conductive compositions are provided. The compositions include a conductive particle constituent in combination with a sintering aid which can, for example be a compound of the same metal in the nanometal, an organo-metallic, a metalorganic salt, mercaptan and/or resinate. In some embodiments the conductive particles include a small amount of nanoscale (