Google Analytics Audience Engagement
Audience Engagnment is something you should be regularly measuring in your Google Analytics reports.
Knowing how engaged, or not, your visitors are with your site generally and with your content in particular will give you a good indication about how you should be improving and refreshing both the layout and the content on your web pages.
If the majority of your visitors are only staying a very short time and only looking at one page then its a sure sign that you need to do something, and fast!
Watch this video: My Google Analytics Audience Engagement video should help you understand more about this vital set of metrics and how to go about finding and interpreting the data. I hope you find it useful.