K.S.A. stands for Knowledge, Skills, and Abilities. It is a term referring to the qualifications that an individual needs to perform a specific job. These are the unique requirements that the employer wants to find in the individual selected to fill a particular job. The major purpose of KSAs is to measure those qualities that will set one candidate apart from the others.
It is referred to as an organized body of information usually of a procedural nature which, if applied, makes adequate performance on the job possible. A body of information is applied directly to the performance of a function.
It is referred to the proficient manual, verbal or mental manipulation of data or things. Skills can be readily measured by a performance test where quantity and quality of performance are tested, usually within an established time limit. Examples of proficient manipulation of things are skill in typing or skill in operating a vehicle, etc.
It is referred to the power to perform an observable activity at present. This means that abilities have been evidenced through activities or behaviors that are similar to those required on the job. Abilities are different from aptitudes. Aptitudes are only the potential for performing the activity.