5. Kent, J., & Plomin, R. (1987). Testing specific cognitive abilities by telephone and mail. Intelligence, 11, 391-400.

The two goals of this research were to develop a brief battery of tests of specific cognitive abilities that can be administered via telephone to adolescents and to assess the psychometric properties of the battery. In a sample of 212 adolescents from 10 to 15 years of age, factor analyses supported the hypothesized structure of verbal, spatial, perceptual speed, and memory abilities. The median test/retest correlation was .77.