1. Amthauer, R. (1973). I-S-T 70. Intelligenz-Struktur-Test. Handanweisung [Structure of Intelligence Test. Manual]. Göttingen: Hogrefe
2. Asendorpf, J. (2004). Psychologie der Persönlichkeit [Psychology of personality]. (3. Aufl.). Berlin: Springer
3. Accuracy of self-ratings of intelligence as a function of sex and level of ability in college students;Bailey;Journal of Genetic Psychology,1976
4. Perceived intelligence in married partners;Bailey;Social Behavior and Personality,1977
5. Mother, father, and me: our intelligence;Beloff;The Psychologist,1992