Which one of Hartmann's 1993 JASA papers are you refering to? One of them has 6 listeners and other (Hartmann and Rakerd) has 11 listener data. So please specify what you mean by "very large" N.
m -- Massimo Grassi - PhD Dipartimento di Psicologia Generale Via Venezia 8 - 35131 Padova - Italy http://www.psy.unipd.it/~grassi http://percezione.wordpress.com/