This document discusses different types of thinking skills, including critical thinking, creative thinking, problem-solving, decision-making, and analytical skills. It focuses on critical thinking and defines it as actively analyzing, evaluating, and synthesizing information to form reasoned judgments. The document outlines several theories of critical thinking and categories it into types like analytical, creative, and ethical thinking. It also lists characteristics of critical thinkers such as being open-minded, curious, reflective, and able to problem-solve and communicate effectively.