Organon §87

Ask only open-ended questions.

In this way, the physician makes a closer determination of each single statement, without ever asking a question that would put words into the patient’s mouth or that would be answerable with a simple yes or no. Otherwise, the patient would be misled into affirming something untrue or half-true or denying something that really exists, out of convenience or to please the interviewer, whereby a false image of the disease and an unsuitable mode of treatment must arise. 142

Comment

142 For example, the physician should not ask, «Wasn’t this or that circumstance also present, perhaps?» The physician should never be guilty of seducing the patient into giving false answers and making false statements with any leading questions or suggestions.