Eye-catching studies that didn't make the final cut:
Is OCD a form of hypermorality?
Can children aged five to six years discriminate between accents?
The wonderfully named "Silver Lining Questionnaire" used to measure the idea that some good can come from illness.
Older people are less prone to the "sunk-cost fallacy": our tendency to keep pursuing failed projects so as to justify earlier losses.
Virtual reality used to help troops recover from PTSD.