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How do critical thinkers evaluate reasons for beliefs and actions?

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Fragment of a Roman fresco showing Socrates seated and draped in a white robe, with Greek text above, on a red background with visible cracks. — Philosophy of education Socrates, Roman fresco, 1st century bce; in the Ephesus Museum, Selçuk, Turkey.

In the context of the philosophy of education, critical thinkers evaluate reasons for beliefs and actions by engaging in a process of deliberative reasoning and impartial scrutiny. This evaluation involves two primary characteristics:1

Reasoning Well: Critical thinkers possess the ability to construct and assess the various reasons offered for or against candidate beliefs, judgments, and actions. This includes breaking down problems into their constituent parts to reveal underlying logic and assumptions, as well as collecting and assessing relevant [evidence].21
Disposition to Act: Critical thinkers are disposed to be guided by the results of their evaluations, meaning they are inclined to believe, judge, and act in accordance with the conclusions reached through their reasoned analysis.2

Beyond these core abilities, critical thinking requires a reflective, open-minded approach that accounts for one’s own biases. It is a self-correcting process that involves constantly reassessing assumptions and potential explanations to arrive at sound judgments. While these skills are essential, scholars continue to debate the epistemological foundations of what constitutes a "good" reason and whether these standards are universal or influenced by cultural and social contexts.12