Which psychological marketing technique did Marvel Studios famously employ to build unprecedented audience anticipation for 'Avengers: Endgame' (2019), helping it become one of the highest-grossing films ever?

In the competitive world of film and television, marketing campaigns can make or break a production's success. Studios employ sophisticated consumer behavior analysis and branding strategies to maximize audience engagement. This trivia question explores one of the most successful psychological marketing techniques used in modern blockbuster promotion that significantly impacts viewer anticipation and opening weekend numbers.

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Strategic information scarcity - deliberately withholding plot details and using misleading trailer footage to create speculation
Sensory marketing - releasing special theater popcorn scents that subconsciously connected audiences to previous Marvel films
Parasocial marketing - having actors stay in character during all press interviews to strengthen audience emotional connection
Decoy effect marketing - announcing a higher ticket price initially, then reducing it to make standard pricing seem more attractive