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).
Many different tests are in use today including the Stanford-Binet, the Wechsler Adult Intelligence Scale and the Woodcock-Johnson Tests of Cognitive Abilities. Each individual test in different in terms of exactly what is being measured, how it is scored, and how these scores are interpreted.