Background: According to the World Health Organization, one million people die by suicide each year worldwide and the rate of attempted suicide is ten times greater. A less known fact is that suicide is 3 times more frequent in elderly adults compared to younger counterpart. Unfortunately, predicting and preventing suicidal behaviours (SB) in general, and in elderly in particular, remain difficult. Clinical, biological and genetic data suggests that SB may be best understood according to a stress-vulnerability model where, more vulnerable individuals are at increased risk of committing a suicidal act when experiencing (mostly social) stress. Vulnerability to SB has also been associated with specific (i.e. distinct from comorbid psychiatric disorders like depression) neurocognitive alterations. However, the neurocognitive basis of suicidal behavior in elderly has been more rarely investigated.