Priming

Exposure to a stimulus influences response to a subsequent stimulus. Bargh's elderly-walking study (1997): subjects primed with "elderly" words — Florida, bingo, wrinkle, grey — walked significantly slower when leaving the lab. They had not been told to walk slowly. They had not consciously thought about old age. The words activated a concept, and the concept activated a behaviour without passing through conscious awareness.

The mechanism: activation spreads through associative networks. The brain stores concepts in clusters — "elderly" connects to "slow," "fragile," "careful." When one node fires, activation spreads to adjacent nodes, lowering their threshold. The primed concepts become more accessible. You see "doctor" and recognise "nurse" faster. You see the Apple logo and creativity metrics rise. The first stimulus sets the stage. The second stimulus plays the scene. The audience doesn't know the stage was set. Neuroimaging studies show that primed concepts produce reduced activation in sensory processing areas — the brain needs less neural effort to process a primed stimulus because the relevant circuits are already partially activated.

The replication crisis complicates the picture. Many priming effects failed to replicate. Doyen et al. (2012) attempted to replicate Bargh's elderly study with tighter controls — crucially, blinding the experimenter to condition — and found no effect. The failure triggered a broader reassessment of behavioural priming. Some dramatic effects have not replicated reliably. The academic debate is real and ongoing.

But robust applications exist. Brand priming: seeing the Apple logo increases creativity in subsequent tasks. Price anchoring: the first number primes the frame for every number that follows. Amazon's "customers also bought" primes consideration — the displayed items activate purchase-related concepts before the customer decides. The mechanism holds: activation spreads through associative networks. Semantic priming (doctor → nurse) and perceptual priming replicate consistently. The commercial applications draw on the robust core rather than the contested behavioural extremes.

The strategic implication: sequence is the most undervalued variable in communication. The same ten data points, presented in a different order, activate different conceptual frames and lead to different decisions. A pitch that opens with market size primes opportunity. A pitch that opens with the team's credentials primes trust. A pitch that opens with the problem primes urgency. The content is identical. The opening prime determines which frame processes it. Use with caution. Effect sizes are often small.