Forward-backward correlations in the multiple production

I discuss the minimal model for the forward-backward correlations in the hadron- and lepton-induced multiple production. In this model correlations are generated by averaging over the components corresponding to the independent emission of clusters with different average multiplicities. I show that the model corrected approximately for phase-space effects describes reasonably well the high energy hadronic data. On the other hand, the test of its applicability to the lh or e+e- data requires higher energies than presently available. 18 refs., 3 figs. (author)