For much of modern economics, the answer seemed straightforward: consumers were assumed to be rational actors. Every purchase, large or small, was thought to be carefully calculated with the goal of maximizing personal benefit. In this view, the consumer resembled a machine – constantly weighing costs against benefits to arrive at the optimal decision.
That tidy picture began to unravel with the work of Nobel Prize–winning psychologist Daniel Kahneman. In his landmark book Thinking, Fast and Slow, Kahneman showed that people do not only deliberate slowly and methodically (“System 2 thinking”), as when choosing a car or an appliance. They also act quickly and intuitively (“System 1 thinking”), often relying on gut feelings, mental shortcuts, and the surrounding context. Strikingly, even high-stakes decisions are frequently influenced by these fast, intuitive processes.
The Bureau of Market Research (BMR) explored these dynamics in its July 2025 publication, The South African Consumer Unveiled: Insights from a Psychosocial Behaviour Study. This report moved beyond traditional utility models to reveal how local consumers, like their global counterparts, are guided by a web of cognitive, emotional, psychological, social, and cultural forces – not by rational calculation alone.
BMR grouped these forces into eight key domains:
- Personality traits
- Values and beliefs
- Motivations and aspirations
- Emotional triggers
- Pain points and barriers
- Lifestyle and interests
- Decision-making styles
- Brand perception and trust
What emerges is a consumer who is less an optimizer and more a storyteller. Purchases are often about how products make people feel: whether an advert sparks nostalgia, a brand signals trust and belonging, or a product aligns with personal aspirations. Even routine purchases are coloured by mood, memory, and identity. The study highlights a significant shift in South African consumer behaviour: emotions, values, and cultural identity now influence buying decisions as much as – or even more than – price and convenience.
What does this mean for the market?
For brands, the implications are profound. Competing only on functional attributes like cost and convenience is no longer sufficient. To build loyalty and engagement, businesses must connect with consumers’ values, emotions, aspirations, and cultural identity. Advances in behavioural economics and neuroscience reinforce this point: “choice architecture” – the way options are presented – can powerfully nudge decisions. Something as simple as the order of products on a shelf, the anchoring of a high initial price, or default enrolment in a service can dramatically influence outcomes.
In short, consumption is more than an economic act – it is psychosocial and cultural. Rational calculation still plays a role, particularly for big-ticket or long-term decisions. But in everyday life, much of consumption happens “on the fly,” shaped as much by emotion, identity, and context as by deliberate reasoning.
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Compiled by: Dr A Basson and Dr J Poalses-Twilley
10 September 2025