What are cognitive errors?
Cognitive errors are mental mistakes that distort your perception, memory, or reasoning. They can affect how you collect, analyze, and interpret data, leading to inaccurate or misleading conclusions. Some examples of cognitive errors are confirmation bias, anchoring, framing, and survivorship bias.
Confirmation bias is the tendency to seek or interpret evidence that supports your existing beliefs or hypotheses, while ignoring or dismissing evidence that contradicts them. For example, if you have a strong preference for a certain marketing channel, you might overlook or rationalize data that shows its poor performance compared to other options.
Anchoring is the tendency to rely too much on the first piece of information you receive, and adjust your subsequent judgments based on that reference point. For example, if you see a high conversion rate for a certain campaign in the first week, you might assume that it will continue to perform well in the following weeks, even if the data shows a decline.
Framing is the tendency to be influenced by the way information is presented, rather than by its objective content. For example, if you see a campaign report that highlights the positive outcomes, such as increased sales or leads, you might overlook the negative outcomes, such as high costs or low retention.
Survivorship bias is the tendency to focus on the successful cases or outcomes, while ignoring or excluding the unsuccessful ones. For example, if you only look at the data from the customers who completed a purchase, you might miss the data from the customers who abandoned their carts or bounced from your website.