There is a long list of students who disappear like Boehm. Typically they walk away taking almost nothing and leaving no clue. College newspapers have noted it but no major media has picked up the thread.
Some are found suicides, some return in altered mental states, and some just never return. Brian Shaffer, Maura Murray, Michael Negrete, Suzanne Lyall, Joshua Guimond, and Justin Gains are some of the long term missing. Older cases include Ron Tammen, Miami of Ohio, 1953, and Lynne Shultz, Middlebury College, Vermont, 1971.
Ahmad Arain, Matthew Wilson, and Hannah Upp were recovered but in altered mental states. Upp was rescued while attempting suicide and Wilson was put on suicide watch by Berkeley police.
I began to look into it when I began to research Subliminal Distraction, 2002. SD is explained in college psychology under psychophysics. It was discovered to be a problem when it caused mental breaks for office workers. The cubicle was designed to deal with the vision startle reflex to stop the problem by 1968. No one either involved in Systems Furniture, cubicles, nor any one teaching psychology recognizes that it is a problem of human physiology not just business offices. Designers of 'Systems Furniture' believe it is a harmless nuisance in the design of crowded offices. In psychology it is treated as something that happened once a long time ago.
Students have the same behaviors as knowledge workers in offices when they spend long hours in deep concentration to study or use computers. If they locate that study area where there is movement in peripheral vision they have created Subliminal Distraction exposure.
The simple way to state the problem is that the repeating subliminal appreciation of threat-movement eventually colors thought and reason. With enough exposure they will have the same mental break as those 1960's office workers.
Although the problem has been known for forty years schools are unaware of it and do not warn students or provide
Cubicle Level Protection.
VisionAndPsychosis.Net is a six year investigation of Subliminal Distraction. There is a Missing Students page with other cases.
Peripheral Vision Psychosis