FIGURE 1.
Task and tools used in the present experiment. From left to right: Puncturing tool, hook tool, short tool, and long tool.
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.