We began with open-ended questions so subjects would not be influenced by the direction of the team.

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Ask open-ended questions, and follow up wherever the trail leads.

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Ask open-ended questions because these elicit a more descriptive response.

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But try asking open-ended questions and try getting personal.

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Ask your sources open-ended questions.

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So there is a balance of directed questions and open-ended conversation.

FORBES: Are You Making Something Usable? Part 5 -- What to ask?