  How do test bodies move in scalar-tensor theories of gravitation? We provide
an answer to this question on the basis of a unified multipolar scheme. In
particular, we give the explicit equations of motion for pointlike, as well as
spinning test bodies, thus extending the well-known general relativistic
results of Mathisson, Papapetrou, and Dixon to scalar-tensor theories of
gravity. We demonstrate the validity of the equivalence principle for test
bodies.
