What color would you see if a researcher simultaneously passes radiant light through filters representing the three primary colors?

How well do SAT scores predict grades at a highly selective college, where almost all students have high SAT scores?

a. SAT scores are highly valid for predicting grades at highly selective colleges. b. SAT scores are about as accurate for predicting grades at such colleges as they are anywhere else. c. SAT scores have low validity for predicting grades at highly selective colleges. d. We have no basis for predicting the results at highly selective colleges.

Which of the following is another example of trial and error thinking that may work if the number of alternatives is small and involves trying all possibilities in a more or less arbitrary or unsystematic order?

a. pragmatics b. heuristics c. random search strategy d. insight