Perception involves selecting, organizing, and interpreting sensory information. Sensation is the immediate response to stimuli, while perception adds interpretation. Selective perception means we notice some things more than others based on internal factors like motivation and external ones like size and motion. Gestalt principles of perceptual organization include figure/ground, grouping, closure, and good continuation. Perceptual interpretation involves applying stereotypes, judging appearances, using descriptive terms, forming first impressions, and halo effects. Positioning creates an image for a product or service in consumers' minds through communications and benefits rather than attributes. Repositioning may be needed due to competitors, lifestyle changes, or target segments.
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