💎 Beware the Rosser Reeves effect when interpreting tracking data (communication effectiveness)

Research routinely shows that people who’re aware of communication from brand X are more likely to buy that brand. Sometimes used as evidence that communication drives sales, in fact causality usually runs the other way: buying brand X makes you more likely to notice its communications. This phenomenon (the so-called ‘Rosser Reeves effecť – named after the famous 1950s adman) has been known for decades, yet is still routinely used to ‘prove’ communication effectiveness (most recently to justify social media use).

Excerpt from: How not to Plan: 66 ways to screw it up by Les Binet and Sarah Carter