On photo therapy
Therapists who practice a kind of photo-therapy find that "during periods of stress and family crisis... there is a sharp drop in the numbers of pictures taken. This includes periods surrounding illness, death, family separations and fragmentations, and heightened conflict between differrent members and fractions of the family... Periods of depression, crisis, disorganization, and rapid family change are ofter characterized by the absense of pictures. Gaps in the picture chronology can point to questions to be asked about loss, separation, disappointment, and grief. " Florence W. Kaslow and Jack Friedman, "Utilization of Family Photos and Movies in Family Therapy," Journal of Marriage and Family Counseling (January 1977): 20,30.
Note on Michelle Citron's first chapter "What's Wrong with this picture?" from "Home movies and other necessary fictions". University of Minessota Press. 1999.