Why awareness doesn't change behaviour
Most campaigns are evaluated by reach: how many people saw the message. But nearly everyone is aware of things they don't act on. If awareness were enough, no one would smoke, everyone would save for retirement, and every town centre would be thriving.
The awareness assumption
Underneath many communications plans sits an unexamined assumption: if people knew, they would act. Tell residents about the market, and they will visit. Tell employees about the new values, and they will live them. Tell customers about the service, and they will buy it.
The evidence tells a different story. Knowledge is rarely the barrier. People fail to act because the action is effortful, because the benefit feels distant, because everyone around them behaves differently, or simply because the moment of decision passes without a prompt. None of these problems is solved by more visibility.
What sits between knowing and doing
Behavioural science offers a more realistic picture. For a person to act, three conditions generally need to hold at the same time:
- Capability - they know how to do it, and it is within their ability.
- Opportunity - the environment makes it possible, and preferably easy.
- Motivation - at the moment of decision, doing it feels better than not doing it.
Awareness campaigns address, at most, a fraction of one of these conditions. A campaign can be seen by millions and still change nothing, because the barrier was never information. It was friction, habit or social context.
Designing for behaviour instead
The alternative is to start from a precisely defined behaviour: who, doing what, in which situation. From there, the questions change character:
- What currently stops this person doing this thing?
- What would make the action easier, more attractive, more normal or better timed?
- Where is the moment of decision, and can we be present in it?
Techniques such as framing, social proof, prompts at the point of decision, and reducing cognitive effort are not tricks; they are ways of respecting how people actually decide. Used ethically, they close the gap that awareness alone cannot.
What this means for evaluation
If the objective is behaviour, the measures must be behavioural. Impressions, reach and recall tell you a message was delivered - not that anything changed. Organisations achieve better outcomes when success is defined as an observable action, measured against a baseline, with a credible link between the intervention and the result.
Successful campaigns begin with clear behavioural objectives - not with a message looking for an audience.