Abstract: The invention relates to a group of new piperazine and piperidine compounds having interesting pharmacological properties. It has been found that compounds of formula (a) wherein A represents a heterocyclic group of 5-7 ring atoms wherein 1-3 heteroatoms from the group O, N and S are present; R1 is hydrogen or fluoro; R2 is C1-4-alkyl, C1-4-alkoxy or an oxo group, and p is 0, 1 or 2; Z represents carbon or nitrogen, and the dotted line is a single bond when Z is nitrogen, and a single or double bond when Z is carbon; R3 and R4 independently are hydrogen or C1-4-alkyl; n has the value 1 or 2; R5 is halogen, hydroxy, C1-4-alkoxy or C1-4-alkyl, and q is 0, 1, 2 or 3; Y is phenyl, furanyl or thienyl, which groups may be substituted with 1-3 substituents of the group hydroxy, halogen, C1-4-alkoxy, C1-4-alkyl, cyano, aminocarbonyl, mono- or di-C1-4-alkylaminocarbonyl; and salts thereof show high affinity for both the dopamine D2 and serotonin 5-HT1A receptors.