The CCRT-method developed by Lester Luborsky is the most widespread and bes
t established method to assess relationship structures in the field of psyc
hodynamic psychotherapy research. Although its categorial structures are cr
iticised in many different ways there have not been any attempts to modify
them. This article points out the inconsistency of the current categorial s
ystem and demonstrates first approaches to alternative solutions. For this
purpose genetic algorithms are used. Their application in psychotherapy res
earch is demonstrated here for the first time.