What makes someone “good with technology,” or else “technologically illiterate”? The study of implicit theories has previously demonstrated that people develop ideas about the malleability of their own abilities in a number of domains, including intelligence, athletics, gaming and using technology. Some think of their abilities as fixed and unchangeable (entity theorists), while others think of them as adaptable through work and/or experience (incremental theorists). These beliefs influence people’s goal outcomes. In this study, we examine implicit theories as a possible contributor to people’s performance using modern technologies. We use an adapted instrument to measure implicit theories of technology, followed by an ecologically valid technological task. People with incremental theories showed better performance than those with entity theories. We discuss implications of this research for practitioners, as well as avenues for future research.