The principle of social proof states that people follow the lead of others who are similar to them. They look to those around them for cues on how to behave, with peers giving the most powerful cues.

The most famous examples of social proof in copywriting are headlines along the lines of ‘Ten million housewives can’t be wrong’, which position a product as the preferred choice of the majority – and therefore of the reader too. It is, of course, a non sequitur – the argumentum ad populum (‘appeal to the people’) that suggests that if lots of people believe something, it must be so.

The King deploys the argumentum ad populum on the cover of his 1959 hits compilation

A classic and much-used example is selling a product on the basis of its being the number-one seller, or promoting a company on the basis of its being the leader. The saying ‘nobody got fired for buying IBM’ encapsulates the appeal of going with the majority.

Social proof can have quite a powerful emotional sting. Recently, a door-to-door canvasser for the RSPCA told me that ‘lots of people’ in my ‘animal-loving neighbourhood’ had signed up for regular donations. The inference being that if I didn’t, I’d be some kind of animal-hating outcast. 

In the examples above, the copywriter is actually imparting the information to support their position. But in the age of Web 2.0, the consumer is much more likely to go out and find such information for themselves. If customers want to know the views of their peers, they don’t have to look much further than Twitter, Facebook, Amazon, the iTunes store or any of the myriad other channels where consumers share views and information. As a result, marketing messages have less authority and may simply be disregarded. 

However, there’s still room for copywriting based on social proof. Think about where your customers look for advice or guidance, and how you can emulate the tone or nature of that content. Testimonials and case studies are enduringly powerful, particularly in B2B marketing, and they allow the copywriter to shape, edit or subtly direct what is said so that it highlights the benefits of a product or service. In B2C marketing, there’s a clear trend towards using real or mock-real figures in TV advertising and elsewhere, or documentary styles, to give a sense that the reader or viewer is directly accessing the views of their peers.

As long as the information feels trustworthy, the audience will still respond – remember, many people actively desire the reassurance of running with the majority, so as long as your message is consistent and clear, it’s got a good chance of succeeding.

Whatever branding, design or marketing channels you use to market your business, it’s essential that your copywriting communicates benefits: the good things that your product or service does (or promises to do) for your customers.

The first and foremost benefit of a product or service is meeting a need. Don’t underestimate the power of stating this to a reader. It’s particularly important online, where people are impatiently searching and seeking to confirm that they’ve found the right thing. If your product solves a problem, make sure people know it.

Then we come to ‘hard’, concrete benefits. These usually boil down to one of three things: save time, save money or (for businesses) make money. They have tangible effects that can be measured – they’re bigger, faster or cheaper. A kettle that boils water faster than competing products offers this type of quantifiable benefit.

However, people are also interested in ‘softer’ emotional benefits such as convenience, fun, style, fashion or the sense of having made a sound buying choice. For example, when you buy jeans or trainers, you’re looking for more than the optimum cost-benefit ratio – you want to buy into a brand that feels cool and appropriate for your age and style.

Fred Perry offers customers benefits including product quality, cultural resonance and fashionability

‘Quality’ might appear in both lists, since its definition is so fluid. For example, it might apply to something as concrete as ‘build quality’ in engineering – the durability, tolerance and precision of the components used to make something. But in more subjective areas of judgement, such as graphic design, one person’s concept of ‘quality’ may be very far from another’s, and affected by a range of personal or cultural factors.

We might say, broadly, that ‘hard’ benefits are more important in business-to-business (B2B) marketing, while ‘soft’ benefits appeal to the consumer (B2C). But even if you’re marketing to a business, the buying decision will always be taken by a human. And that human has emotions. So if you know who they are (either as a specific individual, or in terms of their likely profile) you can appeal to those emotions. The need to feel that the right decision has been made is particularly strong in B2B buyers – hence the saying ‘no-one got fired for buying IBM’.

You may have heard of the marketing formula AIDA, which stands for ‘attention, interest, desire, action’. These are the four stages through which a piece of marketing should (supposedly) guide its audience en route to a sale. If we look at it again, we can see that benefits are behind every one. Simple, strong benefits in a headline or slogan attract attention, while interest is generated by adding more detail. Desire is aroused when benefits are made real in the reader’s mind, and action is elicited by giving a persuasive push to the promise of a benefit.

Whatever thought structure you use, the end result needs to be copywriting that speaks directly to your customers’ needs, desires and hopes by offering something of benefit to them. If it doesn’t, it won’t bring much benefit to you.