Two Things Are Important to Keep in Mind When We

Two things are important to keep in mind when we interpret national differences in the income-happiness relationship. These are that

A) both within- and between-country comparisons should be viewed with caution because of small samples and biases in the sample selection process.
B) within-country comparisons are heavily influenced by personality differences and between-country comparisons are influenced by co- variations in things like freedom, individual rights, and access to resources.
C) within-country comparisons are based largely on college student samples while between-country comparisons are contaminated by cultural and religious differences.
D) within-country comparisons are biased by the disparity between the "haves" and "have nots" and between-country comparisons are biased by the Western values of the researchers conducting the studies.