The influence of subliminal advertising on consumer behaviour has been controversial for a very long period. However, regardless of whether or not subliminal advertising affects consumer behaviour, consumers need to be aware of such practices (John E Lincoln, 2020). The purpose of the book is to answer the following questions.- Are people aware of the idea of subliminal advertising?- Do people perceive the practice of using hidden messages in advertisements as being ethical?- Is there a difference in the awareness levels of boys and girls regarding subliminal advertising?- Does subliminal advertising influence consumer's purchase intentions?To accomplish these objectives, two separate studies were undertaken.