[IxDA Discuss] Asking questions to participants in a positive or negative way ?

[chiwah liu]

Hello,

If I want to do a survey to participant about, for example, usability of a
product. Is it better to formulate questions in a positive way ? "Is this
product is easy to use ?" or rather in a negative way "Did you experience
difficulties using this product ?"
Or maybe I should ask them both, because a user could experience
difficulties in a product but still find it easy to use.

What do you think about that ?
chiwah