According to Payne & Payne (2004),
"Life histories are records of individuals’ personal experiences and the connections between them and past social events, while auto/biography treats these accounts not as established facts but as social constructions requiring further investigation and re-interpretation."
This type of research is often accomplished through in-depth interviews with individuals about their lives or specific events which occurred during their lifetimes. Sometimes, this research is stored as oral histories, in which the words of the individual being interviewed are recorded and presented "as is."
For more information on life histories, review the resources below: