This document defines and provides examples of various psychological instruments used for measurement and evaluation, including intelligence tests, aptitude tests, and personality tests. It discusses the definition and uses of intelligence tests and aptitude tests, and provides examples of specific intelligence tests like the Stanford-Binet Intelligence Test, Wechsler Intelligence Scales, and Raven's Progressive Matrices. It also covers the definition of aptitude, uses of aptitude tests, and an example of the General Aptitude Test Battery.