The document discusses brand loyalty, defined as consumer commitment to purchasing a specific brand regardless of competitive pressures, and its effects on consumer behavior and purchasing decisions. It explores the effectiveness of loyalty programs, such as rewards and incentives, in fostering brand loyalty and highlights the relationship between brand loyalty and product involvement. The paper uses examples from supermarket chains in Australia, such as Coles and Woolworths, to demonstrate the successful application of these strategies in enhancing consumer loyalty and increasing sales.