Hello, Hopefully this is an appropriate place to ask this question. I am working on collecting measurements for my thesis, but I am having some difficulty in sifting through the plethora of measurements and was hoping to find some general advice. For example, I want to incorporate a measurement of depressive symptoms, but I am somewhat overwhelmed by the sheer number of inventories. I could use some general advice to determine what measurements are considered acceptable. I am not necessarily looking for recommendations for specific inventories (although I'd accept them), more so advice on navigating the options and determining if a scale is considered high quality. I have discussed this with my adviser, but my thesis is out of his realm of knowledge, so his opinion on clinical measurements is nonexistent. Any advice would be greatly appreciated! I also have a book of measurements, "Practitioners guide to empirically based measures of depression", though it has an excessive number of inventories.