I'm told that my writing needs more "emotional depth". I'm not really sure how to interpret that, nor how to go about adding it. But it's something that my last few stories have been heavily critiqued on.
So, how do I go about adding more emotional depth to my stories?
You've got some excellent responses here. I'll second the Maass book, and will also reiterate the point blacbird makes about the 'why' of a character.
Remember that as a reader, we're going to a story to experience it: if it doesn't transport us, we'll let it go. Setting details and sensory descriptions may work for a while, but what a reader really needs is to root for a character, to care what happens to her. If we don't care for the character, it doesn't matter how much peril the character is in, or the revelations that get made.
Emotional depth to a character is often about making us care for the character.
Do we know her? Is she vulnerable? Does she yearn for something intangible and higher? Does she believe in things we'd all like to believe in, are her struggles our struggles?
We feel for who we know, we care for someone who inspires us, we identify with someone who is flawed, we root for redemption, we support the underdog.
To create a character who the reader immediately identifies with (this is where 'emotional depth' comes from) we need to work inside out-- build the story and plot from character, not build a plot and fill in the characters, then mechanically give her/them a list of flaws, inspiring qualities etc-- it needs to grow organically.
Or, the problem could be that you have all this in the characterization but are distancing the reader from the characters with your choice of POV, with use of filter words, or creating unnecessary narrative distance simply because you the person is not able to grapple with the issues in the story that you the author needs to.
All this said, it is best to show your work at the SYW, maybe AW folks can point out the specifics, and identify if your beta readers so far have been wrong.