...Functions (especially of components of the mind) are hard to study anyway, and there's a puzzle: while you need to know why episodic memory evolved to know which species have it, you also need to know which species have it to know why it evolved...(3/4)

...but if researchers are live to different possibilities, there are many promising new avenues for studying which species have episodic memory and why, expanding on insights from the likes of Nicola Clayton, to whose honour this special issue is dedicated (4/4)