Relying on classical measurement
theories, factor analysis is widely used to ensure test-point
validity (Kahn, 2006). Factor analysis can be defined as the
process of revealing new variables called common factors, or
factorizing, or as the process of obtaining functional definitions
of variables using the factor load values of the items. There
are many techniques which are used in factorizing. These
techniques can be divided into two as the classical factor derivation
techniques and the basic principal components. The analysis
of basic principal components as a factorizing technique is a
statistical technique which is often used (Bu¨ yu¨ ko¨ ztu¨ rk, 2002b,
p. 118).