“In a different paper, Buehler and colleagues suggest an explanation in terms of the self-serving bias in how people interpret their past performance. By taking credit for tasks that went well but blaming delays on outside influences, people can discount past evidence of how long a task should take.[1] One experiment found that when people made their predictions anonymously, they do not show the optimistic bias. This suggests that the people make optimistic estimates so as to create a favorable impression with others,[8] which is similar to the concepts outlined in impression management theory.”—Wikipedia (https://en.wikipedia.org/wiki/Planning_fallacy)
“In a different paper, Buehler and colleagues suggest an explanation in terms of the self-serving bias in how people interpret their past performance. By taking credit for tasks that went well but blaming delays on outside influences, people can discount past evidence of how long a task should take.[1] One experiment found that when people made their predictions anonymously, they do not show the optimistic bias. This suggests that the people make optimistic estimates so as to create a favorable impression with others,[8] which is similar to the concepts outlined in impression management theory.”—Wikipedia (https://en.wikipedia.org/wiki/Planning_fallacy)