Click on the following links. Please note these will open in a new window.

http://www.listen.org
The American Listening Association home page

https://minnesotajobs.com/news/202/Effective-Listening-Skills-for-Managers.html
Effective Listening Skills by Kenneth R. Johnson

http://psychologytoday.tests.psychtests.com/take_test.php?idRegTest=3206
Psychology Today
This site provides a free listening skills test. 

http://www.infoplease.com/homework/listeningskills1.html
Discusses what it means to be a good listener.

http://www.d.umn.edu/kmc/student/loon/acad/strat/ss_listening.html
Strategies for improving listening skills.