Which psychological retail technique is most commonly employed in performing arts venue lobbies to increase merchandise sales during intermission?

The performing arts industry relies heavily on merchandise sales and concessions to supplement ticket revenue. Understanding consumer psychology in theater retail spaces can significantly impact an organization's bottom line. This trivia question explores how performing arts venues leverage psychological principles to enhance their retail customer experience and boost sales during shows.

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Scarcity marketing (e.g., 'Limited edition show merchandise available tonight only')
Price anchoring (displaying premium items first to make standard merchandise seem more affordable)
The IKEA effect (allowing patrons to participate in assembling or customizing merchandise)
Sensory congruence (matching merchandise displays to the show's lighting design and color palette)