Linda Elder and Richard Paul proposed the following standards as some of the most essential standards for critical thinking. Critical thinking standards are standards that must be applied to thinking whenever one is interested in checking the quality of reasoning about a problem, an issue, or a situation. It is essential that one must have a command of these standards to think critically.
Each standard has questions that will promote critical thinking and these questions should become infused in one's thinking. This "questioning" inner voice guides one into better reasoning.
Questions:
A statement can be clear but not accurate, as in, "Most dogs are over 300 pounds in weight."
Questions:
A statement can be both clear and accurate, but not precise, as in, "Jack is overweight." (We don’t know how overweight Jack is, one pound or 500 pounds.)
Questions:
A statement can be clear, accurate, and precise but not relevant to the question at issue. For example, students often think that the amount of effort they put into a course should be used in raising their grade in a course. Often, however, the "effort" does not measure the quality of student learning; and when this is so, effort is irrelevant to their appropriate grade.
Questions:
When we think, we bring a variety of thoughts together into some order. When the combination of thoughts is mutually supporting and makes sense in combination, the thinking is "logical." When the combination is not mutually supporting, is contradictory in some sense, or does not "make sense," the combination is not logical.
Questions:
A statement can be clear, accurate, precise, and relevant but superficial (that is, lack depth). For example, the statement, "Just say No!" which is often used to discourage children and teens from using drugs, is clear, accurate, precise, and relevant. Nevertheless, it lacks depth because it treats an extremely complex issue, the pervasive problem of drug use among young people, superficially. It fails to deal with the complexities of the issue.
Questions:
Clarity is the gateway standard. If a statement is unclear, we cannot determine whether it is accurate or relevant. In fact, we cannot tell anything about it because we don't yet know what it is saying. For example, the question, "What can be done about the education system in America?" is unclear. In order to address the question adequately, we would need to have a clearer understanding of what the person asking the question is considering the "problem" to be. A clearer question might be "What can educators do to ensure that students learn the skills and abilities that help them function successfully on the job and in their daily decision-making?"
Questions:
A line of reasoning may be clear accurate, precise, relevant, and deep but lack breadth (as in an argument from either the conservative or liberal standpoint which gets deeply into an issue but only recognizes the insights of one side of the question.).