+keyed -keyed

Is it possible to have two types of questions using the Likert scheme? Positively-keyed and negatively-keyed sentences are evaluated in the opposite way: if, for instance, we have 5 answers evaluated from 0 (strongly disagree) to +4 (strongly agree) for the +keyed items, the -keyed will be evaluated in a reverse direction, from +4 (strongly disagree) to 0 (strongly agree). How can I implement that?