Vonk & van Vliet (1998) criticise the methods used in the study by Wag
ner,Elejabarrieta & Lahnsteiner (1995). They conclude that methodologi
cal flaws render some findings of the study invalid. It is shown that
those flaws are in fact not present and that the remaining part of the
conceptual critique is at least debatable. (C) 1998 John Wiley & Sons
, Ltd.