Before revision:  This value captures the degree of complexity /  decision difficulty at the relevant menuand allows for the choice probability of the outside option to either increase or decrease when the menu is expanded, depending on *how many* as well as *how attractive* options are added to it.
After revision:  This value captures the degree of complexity / deferring choice and can be interpreted as proxying decision difficulty at the relevant menuand allows for the choice probability of the outside option to either increase or decrease when the menu is expanded, depending on *how many* as well as *how attractive* options are added to it.