1. Differential item functioning analysis of items on the Geriatric Depression Scale-15 based on the presence or absence of cognitive impairment. (2nd September 2018) Authors: Midden, Allison J.; Mast, Benjamin T. Journal: Aging & mental health Issue: Volume 22:Number 9(2018) Page Start: 1142 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗