I'm an undergraduate Honors student in a STEM major, and in the upcoming years I will have the option to complete an Honors thesis in my field, either as a research/data analysis or a literature review sort of thing. Because of other circumstances I can graduate "with Honors" with or without it, so it would purely be adding to my major, not so much my overall graduation status.
Either way I will have some volunteer experience in labs in my field, and a decent GPA, etc. Would an undergraduate thesis in my field greatly help my graduate program applications? Does it matter if the thesis is based on original research or literature review?