Brown & Kulik (1977)

The aim of the study was investigate whether dramatic or personally significant events can cause "flashbulb" memories. The procedure was that the psychologists assessed the memories of 80 American people for the circumstances in which they learned of public events. They demonstrated that flashbulb memory is more likely for unexpected and personally relevant shocking events. They concluded that dramatic events can cause physiological imprinting of a memory of the events. The weakness was the data was collected through questioner, so it couldn't verify the accuracy of memories reported.
Neisser & Harsch (1992)

Talarico & Rubin (2003)
