This thesis explored novel avenues to improve older adults' prospective memory (PM). First, a relationship between sleep disruption and PM was established in older adults. Next, the potential for improving PM through improving sleep was tested. Whilst the intervention (CBT-I) improved subjective insomnia symptoms, objective sleep and PM did not improve. Finally, a cognitive intervention for PM (goal management training; GMT) was evaluated. Some participants had difficulty comprehending GMT, although it was effective compared to no intervention amongst older adults with poorer baseline PM. Sleep and cognitive strategies are therefore suggested as potential avenues to improve PM in older adults.