TY - RPRT TI - Male mouse strain variation reveals divergent phenotypes for extrinsic and intrinsic reward motivation AU - Grayson, E. W. AU - Robinson, E. S. J. AU - Jackson, M. G. PY - 2026 DO - 10.64898/2026.08.11.743966 UR - https://www.biorxiv.org/content/10.64898/2026.08.11.743966v1 ID - 10.64898/2026.08.11.743966 ER -