Résumé : Positive intergroup contact has not only been shown to be positively associated with favourable attitudes towards members of the contacted group but also with attitudes towards members of secondary outgroups (secondary transfer effect, STE). Only a few studies have addressed a potential STE of negative intergroup contact (i.e., a generalization of negative contact experiences to secondary outgroups). Furthermore, longitudinal studies on STEs and on underlying mediation processes are lacking. In the present research, we investigated the existence of a STE for negative (and positive) intergroup contact in four longitudinal samples with three (Studies 1a and 1b) and two waves (Studies 2 and 3; Noverall = 2052, time lags between waves 2 to 12 months). Our studies did not provide robust evidence for a STE of negative (and positive) contact, nor for indirect STEs via attitude generalization, ingroup identification or diversity beliefs. We discuss implications and suggest avenues for future research.