There is a test to see how similar two factors are. When that test gives results in the >.95 area, the factors are usually taken to be indistinguishable. It’s called congruence coefficients. See e.g. Jensen, Arthur R., and Li-Jen Weng. “What is a good g?.” Intelligence 18.3 (1994): 231-258.
There is a test to see how similar two factors are. When that test gives results in the >.95 area, the factors are usually taken to be indistinguishable. It’s called congruence coefficients. See e.g. Jensen, Arthur R., and Li-Jen Weng. “What is a good g?.” Intelligence 18.3 (1994): 231-258.