A comparative study of two instruments for evaluating primary probabilistic reasoning

Here we approach the complex nature of probabilistic reasoning, even at its most basic level, and its evaluation through written texts. We also present the conclusions of a theoretical and experimental study of two tests (Green, 1983 and Fischbein, 1984) designed to evaluate primary probabilistic intuitions, reaching the conclusion of the need for them to be mutually complementary in order to improve the validity of their content, both for including items from the different components of probabilistic reasoning and from the universe of task and contextual variables.