The first step in a research model is finding the research question.
Fluid intelligence could be described as adaptive intelligence - it's the intelligence to solve unpredictable problems and find new solutions. It's contrasted with crystallized intelligence - the intelligence to use the knowledge already acquired. I think that this is a very important form of intelligence, and likely the kind of intelligence that emerged through the process of evolution.
People of the different countries and different region who migrated and settled down in America makes the United States as a Multicultural nation.
Explanation:
United States has a long history of Migration where first the Americans (initially slaves) demanded their right to live in America properly without being discriminated on the basis of rights provided by the constitution.
After that the Germans and then Chinese, Irish and other Eastern Europeans migrated to United States. People with different culture and different religion thoughts make United States as a Multicultural nation.
Based on the description, the pair of twins that will most likely have more similar iq scores would be: Tim and Jim
The IQ scores is way more affected by our genetic materials than other external factors. Since Tim and Jim are identical twins, it will be most likely that their genetic materials are exactly the same, including the one that determines their IQ
