Endowment income effect

Posted by Rajat on Apr 21, 2015; 4:11am
URL: http://discussion-forum.276.s1.nabble.com/Endowment-income-effect-tp7596266.html

can someone please explain the difference between endowment income effect and ordinary effect ?
If we say that starting off with an endowment set is equivalent to starting off with money of equivalent value, why are the effects identified differently ?