Converging lines of evidence suggest that a feeling of being cared for and cared about is a key element of the feeling of mattering to other people. In the current article, we summarized theoretical observations and the findings of research investigations that indicate that the feeling of being cared about is central to the mattering construct. We then evaluated the role of feeling cared for in an extended six-item General Mattering Scale (GMS-6). A sample of 276 university students completed the GMS-6 and self-report measures of depression and loneliness. Psychometric tests established that a six-item version has one factor and enhanced internal consistency. Correlational analyses confirmed that mattering is associated negatively with depression and loneliness. Hierarchical regression analyses indicated that the additional focus on feeling cared about predicts unique variance in depression and loneliness beyond the considerable amount of variance predicted by the original GMS. The lack of feeling cared as measured by the GMS-6 was established as especially relevant to loneliness. Our discussion focuses on key directions for future research and for the need for a greater emphasis on caring as part of mattering from a construct validity perspective.