The successful use of memory requires us to be sensitive to the cues that will be present during retrieval. In many situations, we have some control over the external cues that we will encounter. For instance, learners create shopping lists at home to help remember what items to later buy at the grocery store, and they generate computer file names to help remember the contents of those files. Generating cues in the service of later cognitive goals is a complex task that lies at the intersection of metacognition, communication, and memory. In this series of experiments, we investigated how and how well learners generate external mnemonic cues. Across 5 experiments, learners generated a cue for each target word in a to-be-remembered list and received these cues during a later cued recall test. Learners flexibly generated cues in response to different instructional demands and study list compositions. When generating mnemonic cues, as compared to descriptions of target items, learners produced cues that were more distinct than mere descriptions and consequently elicited greater cued recall performance than those descriptions. When learners were aware of competing targets in the study list, they generated mnemonic cues with smaller cue-to-target associative strength but that were even more distinct. These adaptations led to fewer confusions among competing targets and enhanced cued recall performance. These results provide another example of the metacognitively sophisticated tactics that learners use to effectively support future retrieval.Keywords Cue generation . Metacognition . Control When taking notes in meetings, making to-do lists, outlining readings, and naming computer files, learners support later retrieval by generating cues for their future selves. Learners create external cues to reduce the demands placed on their limited memories. The ability of a learner to remember target information may fade over time; a good external cue can sustain memory retrieval in the face of considerable forgetting. Generating external cues to support later retrieval plays a vital role in many real-world activities and carries serious consequences. For example, patients often set up memory cues, like pill boxes and cell phone reminders, to aid in their adherence to medications. In the current experiments, we examined how learners generate cues to support later memory retrieval. More specifically, we analyzed how the characteristics of selfgenerated cues differed under various instructional conditions and with various stimulus sets. In the first trio of experiments (Experiments 1-3), we examined how learners intentionally generate cues for themselves and evaluated the characteristics of intentional mnemonic cues. In the second series of experiments (Experiments 4-5) we analyzed whether learners adjust their cues based upon the characteristics of the to-beremembered set of stimuli.Although there is not a large body of research on cue generation in mnemonic tasks, learners must exercise accurate metacognitive control wh...