While they sound efficient and cost-saving, a recent study reports that they are not effective, primarily because depressed patients are not likely to engage with them or stick with them.

虽然它们听起来很有效而且节省了成本，但最近的一项研究报报称，它们并不有效，主要是因为抑郁症患者与之接触的可能性低，也难以坚持下去。