Figure 10. Experimental design: 35 subjects participated in the experiment.
17 of them stared with the 2 h and then performed the 3 h. 18 of them started with the 3 h and then performed the 2 h.
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.