Research indicates that accurate eyewitnesses tend to identify perpetrators more quickly than inaccurate eyewitnesses. To date, however, no research has examined whether individual differences in working memory capacity (WMC) influence accuracy and response latencies in eyewitness identifications. In Study 1, it was hypothesized that individuals high in WMC would make more accurate and faster identifications than individuals low in WMC. Study 2 examined the interaction between WMC, response latency, and accuracy measured in Study 1. It was hypothesized that if greater WMC led to enhanced performance due to differences at encoding, participants high in WMC should have performed well at quickly identifying the perpetrator. Those low in WMC should have benefited from the warning. If, however, the differences were due to an advantage at retrieval, low and high WMC participants presented with a sequential line-up would have looked identical. Neither hypothesis was completely supported.