Which psychological principle is most commonly leveraged in bestselling fiction book cover designs to increase consumer appeal?

Book covers are more than just artistic expressions—they're carefully crafted marketing tools designed to appeal to specific psychological triggers in potential readers. Publishers invest significant resources in cover design because they know it's often the first point of contact between a book and its audience. This poll explores the fascinating intersection of consumer psychology and literary marketing that influences purchasing decisions in bookstores worldwide.

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The Von Restorff effect (distinctiveness among similar items stands out and is more likely to be remembered)
The Zeigarnik effect (incomplete tasks create psychological tension that seeks resolution)
The Dunning-Kruger effect (cognitive bias where people overestimate their knowledge)
The Baader-Meinhof phenomenon (frequency illusion after learning something new)