Measurements of the temperature dependence of the electrical resistivity and the Hall effect in the normal and superconducting states of a ceramic DyBa 2 Cu 3 O 7±d superconductor are reported. In high temperatures the diagonal resistivity is proportional to T, whereas the Hall response exhibits a 1/T dependence and the cotangent of the Hall angle is proportional to T 2 . Upon decreasing the temperature, the Hall response shows a sign reversal close to T c , goes through a negative maximum and vanishes close to the so-called zero-resistance temperature. The aim of this report is to show that the sign change occurs in the temperature region dominated by thermal fluctuations in the order parameter.