ethnic groups, but of differences between genotype and phenotype in a given population. Furthermore, he dismissed the proposition that an IQ score measures the general intelligence (g factor) of a person, because cognitive ability tests (IQ tests) present different types of questions, and the responses tend to form clusters of intellectual acumen. That is, different questions, and the answers to them, yield different scores—which indicate that an IQ test is a combination method of different examinations of different things. As such, Gould proposed that IQ-test proponents assume the existence of "general intelligence" as a discrete quality within the human mind, and thus they analyze the IQ-test data to produce an IQ number that establishes the definitive general intelligence of each man and of each woman. Hence, Gould dismissed the IQ number as an erroneous artifact of the statistical mathematics applied to the raw IQ-test data, especially because psychometric data can be variously analyzed to produce multiple IQ scores. Second edition The revised and expanded second edition (1996) includes two additional chapters, which critique Richard Herrnstein and Charles Murray's book The Bell Curve (1994). Gould maintains that their book contains no new arguments and presents no compelling data; it merely refashions earlier arguments for biological determinism, which Gould defines as "the abstraction of intelligence as a single entity, its location within the brain, its quantification as one number for each individual, and the use of these numbers to rank people in a single series of worthiness, invariably to find that oppressed and disadvantaged groups—races, classes, or sexes—are innately inferior and deserve their status". Reception Praise The majority of reviews of The Mismeasure of Man were positive, as Gould notes. Richard Lewontin, a celebrated evolutionary biologist who held positions at both the University of Chicago and Harvard, wrote a glowing review of Gould's book in The New York Review of Books, endorsing most aspects of its account, and suggesting that it might have been even more critical of the racist intentions of the scientists he discusses, because scientists "sometimes tell deliberate lies because they believe that small lies can serve big truths." Gould said that the most positive review of the first edition to be written by a psychologist was in the British Journal of Mathematical & Statistical Psychology, which reported that "Gould has performed a valuable service in exposing the logical basis of one of the most important debates in the