Humans have shorter attention span than goldfish, thanks to smartphones
The telegraph, May 15, 20151
The length also is correlated to the attention span of people. This attention span can be estimated with approximately 10 seconds. People who are regularly involved in learning or observation of processes may have a longer attention span.
A study (part of the book "Technology Enhanced Teaching", 2016) gives interesting answers to the question mentioned above. Obviously, there is no difference between male and female students.
The preference lies at 5 minutes, 20 % of the students would prefer a length of 2 minutes.
|Results or the study (from: Technology Enhanced Teaching, 2016)|