This site uses cookies. When you visit this site it will place two cookies on your PC. Both are SessionID or transient cookies and allow all the functions of the site to operate including staying logged in when you browse from page to page or to remember your preference for the test size on the screen. These cookies are stored in the computer's memory only during a user's browsing session and are automatically deleted from the user's computer when the browser is closed.

These cookies store a session ID that is not personally identifiable to users, allowing the user to move from page to page without having to log-in repeatedly. They are widely used by web sites (for example, to keep track of items that a consumer has added to a shopping cart).
 
Session cookies are never written on the hard drive and they do not collect any information from the user's computer. Session cookies expire at the end of the user's browser session and can also become no longer accessible after the session has been inactive for a specified length of time, usually 20 minutes. We never use any form of persistant cookie that can be used to track you from page to page or from site to site.