Recency is a measure of how long it’s been since a specific user visited your website. for example, since the sales cycle for an ink cartridge is very short, you should not serve ads to them after 30 minutes. if a user searches online for a replacement, how much are you willing to pay for an ad each minute leading to a conversion?

In a study, people were asked to imagine simple occasions that made them happy and to remember events that made them feel proud about themselves. it was observed that the subjects developed an increasingly positive attitude. these changes are known to be healthy, leading to greater physical activity and reducing unhealthy habits. based on this excerpt, we can conclude that a positive attitude .