The internal mechanisms of locks are generally made of brass or die-cast zinc. The cam, which is the tongue that protrudes from the lock to secure it, is usually made of steel or stainless steel. The outer casing of a lock may be made of brass, chrome, steel, nickel or any other durable metal or alloy.
From Wikipedia, the free encyclopedia. Cognitive tests are assessments of the cognitive capabilities of humans and other animals. Tests administered to humans include various forms of IQ tests; those administered to animals include the mirror test (a test of visual self-awareness) and the T maze test (which tests learning ability).
Doctors test people by testing memory and attention. A commonly used tool to screen for dementia is the Mini Mental State Exam. It consists of 11 short assessments, such as asking the person what day and year it is or have the person count backward from 100 by sevens (100, 93, 86, etc.).