Good point about the MS.
My point is that *neuroscience* seems to me to be awfully specific for an undergrad degree. I have known people with degrees in Neuropsychology and they had PhDs.
I did a quick search and actually, this seems to be a boutique program in Social Sciences and Humanities and usually results in a B.A. It blends courses in chemistry, biology, physics, psychology, math and computer sciences. Topics include hormones and behavior, psychopharmacology, genome biology and immunology.
It appears to be a tarted-up psych degree. If you accept that many psych students are looking for self-explanations, then it could be the shooter knew full well he had problems and was looking for an answer.
His father is in the same field of neuroscience, having been involved in the creation of predictive modeling software that went beyond statistical inference and into psychological profiling. The company was bought out by Fair-Isaacs, the providers of the ubiquitous FICO score used in determining creditworthiness. Prior to this, his father was involved in related work for DARPA.