Final answer:
The Self-Reference Criterion (SRC) signifies the influence of one's cultural background on perception, a challenge for global marketers and sociologists who seek to maintain objectivity in their work.
Step-by-step explanation:
The lesson that Self-Reference Criterion (SRC) teaches is that a person's perception, including in global marketing, is heavily influenced by their own cultural experiences, potentially leading to unconscious bias. One must strive for an unbiased perception, which is a critical skill in global marketing. However, it's challenging to completely overcome cultural biases. Understanding and being aware of these biases, such as how Westerners and non-Westerners perceive visual illusions differently, are important in sociological studies and in critical thinking within various social sciences, including global marketing. Researchers try to maintain cultural relativism to study cultures objectively, but this is often hard due to deep-rooted perceptions formed from one's own cultural experiences.