Intelligence Definition and Measurement
Defining and testing for intelligence is a controversial issue and has been since the first intelligence test was created and administered. Many forms of intelligence and achievement tests exist and using a particular test is a matter of preference and depending on the areas of intelligence is desired to be measured. This paper will start by critiquing the major definitions of intelligence, and determine the best definition for each chosen intelligence and achievement instruments. It will also evaluate the reliability, validity, normative procedures, and biasness of each intelligence measurement. The measurements will be compared and contrasted while also considering the ethical implications of …show more content…
Each validity measure shows that all portions of this test correlate with each other and measure what it is intended to measure. It also correlates to previous editions of this test (Wechsler, 2008). The normative procedures for this test used 2,200 participants that were selected based on age, sex, race, ethnicity, level of education, and location. A smaller sample group was selected based on special abilities and disabilities, such as intellectually gifted, intellectual disabilities, and mental disorders. This small group was chosen to provide a norm for others special individuals like themselves. This test is not biased as it excluded criteria, such as language, physical and mental limitations, and current medication. This test also provided a sample group and norms to compare the results of those who have special needs (Wechsler, 2008).
Stanford-Binet Intelligence Scales The Stanford-Binet Intelligence Scales were tested for reliability by using the split-half method, the test-retest reliability method, the interscorer agreement, and the Spearman-Brown formula. Each test of reliability showed strong score reliability. Testing the validity of this test was conducted by using content-related, criterion-related, concurrent, and construct validity methods. Each test of validity indicated that the measure did measure what it was