Final answer:
IQ, or intelligence quotient, is considered more malleable and can vary throughout a person's life, influenced by factors such as education and environment. EQ, or encephalization quotient, is a static measure indicative of the brain size relative to body size of a species, and it does not change within an individual's lifetime.
Step-by-step explanation:
Is EQ or IQ a Changeable Entity?
When discussing the changeability of cognitive measures, one should clarify what EQ and IQ refer to. IQ, or intelligence quotient, has traditionally been seen as a more static measure of intelligence. There is ongoing debate about the extent to which IQ is influenced by environmental factors such as education or socioeconomic status. Still, most researchers agree that it can be somewhat malleable, at least in childhood. EQ stands for encephalization quotient, which is a measure of brain size relative to body size, often used to estimate intelligence in comparisons among different species. Unlike IQ, EQ is not considered a measure that changes within the lifespan of an individual, since it is a comparative anatomical measure typically used in evolutionary biology. EQ calculations, developed by Harry J. Jerison in 1973, are used in biological anthropology to assess cognitive capacities in both extinct and extant species. These are important for understanding evolutionary processes and cognition in different taxa. An individual's EQ does not change, as it is a species-wide comparative measure rather than an individual trait. On the other hand, one's IQ can vary over time through learning, and it is also subject to debate concerning factors like cultural and educational backgrounds impacting test performance.