increase the time, increase the age, increase the degree of contact.
the highest level might be a full spectrum test using a human-like robot controlled by an AI which lives and works with professionals, convinces them it's another professional forms relationships and goes unnoticed for months or years.
The chatterbot "Eugene Goostman" has apparently passed the Turing test:
As I kind of predicted, the program passed the Turing test, but does not seem to have any trace of general intelligence. Is this a kind of weak p-zombie?
EDIT: The fact it was a publicity stunt, the fact that the judges were pretty terrible, does not change the fact that Turing's criteria were met. We now know that these criteria were insufficient, but that's because machines like this were able to meet them.