At baseline participants were administered the Armed Services Vocational Aptitude Battery (ASVAB) which has 10 subtests: science, arithmetic, word knowledge, paragraph comprehension, numerical operations, coding speed, auto and shop information, mathematics knowledge, mechanical comprehension, and electronics information.
As our measure of intelligence we used the 1989 revision of the Armed Forces Qualification Test (AFQT) which is derived from the four ASVAB subtests that are the most general and less vocationally-specific, namely: arithmetic, word knowledge, paragraph comprehension, and mathematics knowledge.1 The AFQT percentile score was z transformed to zero mean and unit SD.
As our measure of intelligence we used the 1989 revision of the Armed Forces Qualification Test (AFQT) which is derived from the four ASVAB subtests that are the most general and less vocationally-specific, namely: arithmetic, word knowledge, paragraph comprehension, and mathematics knowledge.
Free full text: Click here
