The document discusses key concepts around consumer exposure, attention, and perception. It explains that exposure means consumers see an ad, attention means they look at the message, and perception means they understand it. Attention is selective, divisible, and limited. Perception occurs through the senses as stimuli are registered. The document also differentiates between high and low involvement products based on risk to consumers, noting high involvement for major purchases like homes and low involvement for small items like soap. Finally, it provides examples of encouraging attention for ads, appealing to values for high involvement homes and using attractive models and music for low involvement soap.