Your average creationist has a great deal of difficulty accepting the evidence of the biological relationship between the Apes and Humans. The problem with the creationist position however is that the scientific evidence just keeps piling up by the week. Another nail was hammered into the coffin of creationism recently with yet more evidence of the biological similarity between Apes and humans.
A recent study shows that just like with humans gorillas are predominantly right handed and their communication is left brain localised as it is in humans. Given the ton of other evidence about the way that chimps, gorillas and other apes behave and their biological make up it seems impossible that any creationist could still attempt to claim that there is no common descent, that somehow we can pretend that we don't know that Apes and humans have common ancestry.
Creationist fundamentalists will of course continue to be wilfully un-persuadable in the face of the blindingly obvious as they cling fearfully to Genesis stories in their holy books