The aptitude is the potential to master a specific skill or to learn a certain body of knowledge.
The achievement test is a measure of mastery or proficient in reading, mathematics, writing, science, or some other subject.
The IQ test is a test designed to measure intellectual aptitude, or ability to learn in school.
The concept that an IQ score measures one underlying aptitude was challenged by Howard Garderner and others, who believe that people have not just one type of intelligence but many. He described seven intelligence's: linguistic, logical-mathematical, musical, spatial, bodily-kinesthetic(movement), interpersonal ( social understanding) and intrapersonal (self-understanding), each associated with a particular brain region. But the question still remains, can any single test measure the complexities of the human brain.
"According to the 1999 Standards, validation is the process of gathering evidence to provide “a sound scientific basis” for interpreting the scores as proposed by the test developer and/or the test user. Validation therefore begins with a framework that defines the scope and aspects (in the case of multi-dimensional scales) of the proposed interpretation. The framework also includes a rational justification linking the interpretation to the test in question."
- Evidence based on test content
- Evidence based on response processes
- Evidence based on internal structure
- Evidence based on relations to other variables
- Evidence based on consequences of testing
Berger, K. S. (2012). The developing person through childhood (6th ed.). New York, NY: Worth Publishers.