7-11; children develop a set of mental operations that allow them to treat the physical world in a systematic way
A term used by Piaget to refer to the particular properties of objects that are preserved under certain transformations
Cattell's term for the factor in intelligence that depends on acquired knowledge
in the context of intelligence tests, a statistical method that tries to find a set of factors that will account for performance across a range of tests
Cattell's term for the factor in intelligence that depends on the ability to reason or solve problems
intelligence quotient (IQ)
a measure of general intellectual performance that is normed to have a mean of 100 and a standard deviation of 15.
2-7 years, a child can engage in internal thought about the world (mental processes are intuitive and lack systematicity)