Which packaging design principle is known as the 'Von Restorff Effect' and is widely used by brands to increase product visibility on retail shelves?

Product packaging is more than just protection—it's a crucial marketing tool that can dramatically influence consumer purchasing decisions. From color psychology to tactile experiences, packaging elements send subtle signals to consumers that can either attract or repel. This trivia question explores one of the most interesting psychological principles behind successful product packaging design. Test your knowledge of how brands leverage packaging psychology to drive sales!

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The principle that distinctive items (in color, shape, or size) stand out in a homogeneous group and are more likely to be remembered
The principle that consumers prefer products in packages that use gold and black colors to signify luxury and exclusivity
The principle that transparent packaging increases consumer trust by allowing visibility of the actual product
The principle that curved packaging shapes are perceived as more approachable than angular packaging designs