Prospective memory in prodromal Alzheimer's disease: Real world relevance and correlations with cortical thickness and hippocampal subfield volumes.

•Event-based prospective memory is impaired in people with mild cognitive impairment.•Prospective memory mirrors real-world behaviour.•Structural changes in the brain correlate with prospective memory scores.•Different aspects of prospective memory correlate with distinct brain networks.•Prospective memory might be a meaningful measure in clinical practice or research.