Show attention

Customer loyalty is measured through surveys, feedback, and observation. But what if the measurement itself changes the outcome? The question is: Does the knowledge of being observed influence people's behavior? How strong is this effect, and what evidence exists to support it?

Studies

The Illumination Experiments

Elton Mayo and his colleagues conducted one of the most famous experiments in industrial psychology at Western Electric in Chicago from 1924 to 1927. They sought to test whether brighter lighting would increase factory workers' productivity. The researchers divided workers into two groups: for one group, lighting was gradually increased; for the other, it was decreased. The results were astonishing: both groups became more productive—even when the light was so dim that workers could barely see. Only when the researchers stopped observing did performance decline again. It was not the working conditions but the mere presence of the researchers that had increased performance.

The Relay Assembly Test Room

In 1927, Mayo and Roethlisberger isolated six female workers from the Western Electric Company in a separate room and systematically varied their working conditions: longer breaks, shorter working hours, and free snacks. Productivity increased continuously. Then the researchers removed all improvements—reverting to the original 48-hour weeks without extras. Yet productivity remained at the higher level. The explanation: The women felt valued by the special attention and had developed a stronger sense of team spirit—entirely independent of the actual working conditions.

The Reanalysis by Levitt & List

In 2011, economists Steven Levitt and John List reanalyzed the original data from 1924-1932—and shattered a psychological myth. They discovered that many productivity increases couldn't be explained by observation alone, but rather by replacing underperforming workers and improving compensation. The famous Hawthorne Effect was smaller than believed for 80 years and typically disappeared after just a few weeks. Nevertheless, short-term behavioral changes under observation are real—but companies shouldn't expect that attention alone will boost performance over the long term.

Principle

Which principle for Customer Experience Design can be derived from this? The Hawthorne Effect demonstrates that conscious attention to customers creates independent value and positively influences their behavior. When companies show customers that they take their opinions, experiences, or needs seriously, a sense of appreciation emerges that is often more important than the concrete solution itself. This effect is particularly powerful with customers who feel neglected or overlooked, but can backfire when attention becomes excessive or intrusive. The key lies in finding the right balance between attentive care and respectful restraint. The following guidelines show how to implement this principle in practice.

Guidelines

Make customers visible

Show the people behind your brand – both your customers and your team members with real faces. Replace anonymous data points with personalized thank-yous; instead of '500 experts,' say 'This is Anna, who has been developing our products for 8 years.' Real people work here and buy from you, not faceless numbers. The following examples illustrate this guideline:

• Starbucks: The name on the cup is more than logistics. It signals: 'You're not customer #47, you're Sarah.' This minimal personalization activates connection.
• Duolingo: 'You've been with us for 30 days now!' – This message shows: We're tracking your progress. We see you. That motivates more than abstract streak numbers.

Participate in development

Actively involve customers in product development through beta tests, feedback sessions, or advisory boards. This involvement transforms consumers into partners and, via the Hawthorne effect, converts them into your most loyal advocates. Early adopters and power users, in particular, become invaluable champions of your product. The following examples illustrate this guideline:

• Notion: Notion Ambassadors are invited to product feedback sessions. The input is valuable – but the real effect: they feel like co-creators, not just users.
• LEGO Ideas: Fans can submit and vote on product ideas. The few that get produced are less important than the thousands who feel like part of the LEGO world.

Set up feedback channels

Establish structured feedback channels and actively involve customers in decision-making processes through voting systems, co-creation initiatives, or direct requests for their opinions. The simple act of asking for feedback transforms customers into co-creators and strengthens their loyalty. Communicate transparently about how their input is being used. The following examples illustrate this guideline:

• UserVoice/Canny: Product feedback tools that show: 'This feature was requested by customers and has now been implemented.' Closing the loop amplifies the voice effect.
• Slack: Public roadmap and 'What's New' announcements that explicitly reference customer feedback: 'You asked, we delivered.'