Table 2.

Experimental questions. We selected five categories of person related knowledge (nominal, perceptual, episodic, social and semantic). For each category we chose two different probe question that require accessing the specific category of knowledge. Each task was presented in a block of eight trials. On each trial, participants were instructed to relate the task question to the famous person.

Knowledge category	Task	Participant instructions	Answer choices
Nominal	Common name?	How common is this person’s name?	Likert scale (1-4)
	Full name?	How well can you recall the person’s full name?	Likert scale (1-4)
Perceptual	Attractive?	How attractive do you find this person?	Likert scale (1-4)
	Distinctive?	How distinctive is this person’s face?	Likert scale (1-4)
Social	Friendly?	How friendly is this person?	Likert scale (1-4)
	Trustworthy?	How trustworthy is this person?	Likert scale (1-4)
Episodic	Familiar?	How familiar is this person is for you?	Likert scale (1-4)
	First memory?	For how long have you known this person?	Likert scale (1-4)
Semantic	How many facts?	How many facts could you recall about this person?	Likert scale (1-4)
	Job?	What is this person occupation?	Predefined categories (see ‘task’)