  {We present the results of a numerical investigation of SU(2) gauge theory
with $N_f=3/2$ flavours of fermions, corresponding to 3 Majorana fermions,
which transform in the adjoint representation of the gauge group. At two values
of the gauge coupling, the masses of bound states are considered as a function
of the PCAC quark mass. The scaling of bound states masses indicates an
infrared conformal behaviour of the theory. We obtain estimates for the
fixed-point value of the mass anomalous dimension $\gamma^*$ from the scaling
of masses and from the scaling of the mode number of the Wilson-Dirac operator.
