Aims: Investigate the duration of LTM
Procedure: Opportunity sample of 392 American ex-high school students aged 17-74 years tested in free recall the names of as many of their former classmates; photo recognition test where they were asked to identify former classmates in a set of 50; name recognition testl name and photo-matching test.
Findings: Accurate recall was possible for time periods of as much as 50 years
Conclusion: LTM has seemingly unlimited duration
Strength: A high level of mundane realism: remembering faces is a task relating to real-life settings
Weakness 1: Familiar faces are a very specific type of information and therefore these results cannot be generalised to memory of other material