Sam says: I and my colleagues at Monash university have been using PI to teach philosophy for several years now and have found it to be just as useful and engaging for students as in science subjects. Some suggestions about the kinds of ConcepTest questions you can ask can be found here:http://arts.monash.edu.au/philosophy/peer-instruction/
Look under ‘Types of question you can ask in lectures’.
Even in a subject like philosophy where there are no generally accepted right and wrong answers, there are still theories, concepts, definitions and distinctions which you are trying to get students to understand and which you can ask useful questions about:
1) what a particular theory implies about a specific situation or context
2) which of a number of examples are instances of a given concept
3) ‘opinion poll’ questions that poll students initial opinions about a topic. After discussing a particular theory in a lecture, you can then ‘re-poll’ the students to see if their views have changed. Although such questions do not test student’s knowledge, they are still useful for keeping students engaged in the lecture. Students casn become more ‘invested’ in a topic after they have expressed an opinion about it.