Objective： To explore estimating IQ of the Intelligence Scale for Chinese Adult（ISCA）. Methods： Standardized sample of the ISCA（n=2035） was roughly equally divided, at random, into two groups, one for development of the estimating formulae and the other for validation. A series of hierarchical linear regression analyses were carried out to develop formulae for estimating intelligence quotient. In the procedure, demographic variables, including age, education, gender, vocation, ethnicity and region of the country, as well as performance of...
