Long before modern behavioural science existed, scholars attempted to explain how humans make decisions. One of the earliest thinkers was Avicenna (c. 980–1037), the Persian polymath who argued that the mind does not simply receive information. Instead, it actively constructs meaning through perception, emotion and internal imagery. His view that inner states guide outward behaviour remains a powerful foundation for understanding consumer psychology today.
Modern neuroscience has expanded Avicenna’s insight with precise biological detail. When a person encounters a stimulus, the brain initiates a rapid sequence of events. Sensory information is routed through the thalamus and then passed to the amygdala, which evaluates emotional significance, relevance and potential threat. This evaluation unfolds within milliseconds. As a result, the body often reacts before conscious reasoning begins. People approach what feels safe, exciting or rewarding and move away from anything associated with uncertainty or discomfort.
This sequence is central to consumer neuroscience. A logo, a scent or a short advertising clip can act as a stimulus. The amygdala generates an emotional state, such as pleasure or anticipation. This state shapes the behavioural response, often without conscious awareness. The classic Stimulus Organism Response model captures this pattern by showing how environmental cues trigger internal emotional states that lead to predictable actions.
Somatic markers, introduced by neuroscientist Antonio Damasio in the 1990s, extend this idea further. These markers are bodily sensations connected to past emotional experiences. When someone encounters a product or brand that once produced satisfaction, confidence or comfort, the body recalls that sensation and influences the new decision. The individual may believe they are choosing logically, but it is the emotional trace that guides the behaviour.
Contemporary research continues to validate these mechanisms. At Johns Hopkins University, Professor Dr Ian McCulloh and his team have spent years studying the role of social influence in decision making. Their findings show that people respond more strongly to emotionally charged information than to purely rational arguments. This aligns closely with Avicenna’s view from a millennium earlier: inner emotional states shape outward choices.
Understanding this interaction explains why some brands feel instantly trustworthy, why certain adverts trigger immediate attention and why emotionally resonant messages outperform those that rely only on logic. Consumers rarely think and then feel. More often, they feel first and the decision follows.
