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 accuracy (and s.e.m.) on different trial types with non-symbolic stimuli (Experiment 1), symbolic stimuli with approximate comparisons (Experiment 2) and symbolic stimuli with exact comparisons for inverse and approximate comparisons for control problems (Experiment 3).
