Rigidity refers to the quality of being stiff or inflexible. In physical terms, it describes materials or structures that do not easily bend or change shape under stress. For example, metals like steel exhibit rigidity, making them suitable for construction and manufacturing applications where strength is essential. In a psychological context, rigidity can describe a person's unwillingness to adapt their thoughts or behaviors. Individuals who are rigid may struggle with change or new ideas, often adhering strictly to their beliefs or routines. This can impact relationships and problem-solving abilities, as flexibility is often necessary for effective communication and collaboration.