Which psychological principle is most commonly leveraged in marketing high-end graphing calculators to appear more valuable to mathematics students?

In the world of mathematics education products, positioning is everything! Companies use various psychological principles to market their educational tools effectively. Understanding these strategies can help identify why certain mathematical learning products succeed while others fail. Test your knowledge about how product marketers leverage psychology to position mathematics learning tools in the competitive educational market.

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The Anchoring Effect - displaying the calculator alongside much higher-priced scientific equipment first
The IKEA Effect - requiring students to assemble parts of the calculator themselves
The Bandwagon Effect - claiming the calculator is popular without showing comparative sales data
The Decoy Effect - creating an identical but slightly inferior calculator at the same price point