In a list you just heard, you remember the last few items best — for about 30 seconds

When people recall a list immediately, the last few items come back easiest, a pattern called the recency effect. It combines with the primacy effect to form a U-shaped recall curve. Delay recall with even 30 seconds of distraction and the recency advantage vanishes, while the primacy bump holds steady.

— Bennet Murdock, The Serial Position Effect of Free Recall — Journal of Experimental Psychology, 1962