Table 4. Example of probes for experience items: Faces.

Probe	Probe Type	Response Type	Response Options	Participants
1. If these were the response options, which would you select?	Response	Closed	Yes/No	All
2. In your own words, what does “seeing a face in a natural or human-made object” mean to you?	Paraphrase	Open		All
3. Briefly describe your experience of seeing a face in a natural or human-made object.	Example [“Yes”]	Open		Selected “Yes” on first probe
4. Please give an example of what such an experience would be like, even though you have not had one.	Example [“No”]	Open		Selected “No” on first probe