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.
A computer-generated image that conveys the impression of a smooth, pebble-shaped, transparent blob inside a textured box. Transparency is conveyed by (A) reflections of light (e.g., highlights) as well as by (B) refractions of light (e.g., image distortions such as changes in texture and misalignments of borders due to bending of light). Source: From Fleming et al. (2011). Copyright 2011 American Psychological Association; reprinted by permission.
