Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mean (±s.e.) percentage of caches recovered by storers (a) with previous observers (‘knowers’) and non-observers (‘ignorants’) and (b) when those competitors were moving towards the caches (black bars) or did not come close to the caches (white bars). Exact Wilcoxon signed-ranks test. Asterisk denotes p<0.05.
