the subtype is very stable. if you have 4 dominant subtypes in a group, then one of them might adapt a normalising behaviour. when they are outside of this group enviroment, they get back into their dominant behaviour. the subtypes are important because some combinations will have unsuccesful relationships (terminating and initiating types are incompatible). it's important to research that. gulenko even says now that subtypes are more important for long term success than intertype relationships