What attracted me to the IOL was some unique research opportunities. It's not a huge reserach center, but they do have a lot of interesting work with neuroimaging, particularly as it pertains to schizophrenia. Also, they have a virtual reality (VR) lab, where they present VR images and sound, and use it to study the effects of marajuana and alcohol on the brain while driving, participants play video games while stoned or drunk, attached to a functional MRI (I think they used Grand Turismo). They also have done some work w/ADHD and VR.
Also they have a 5 year combined child psych/adult psych program. And from what I've seen from their material, Hartford is a cheaper section of Conneticut compared with New Haven, and some of the other New York City bedroom communities (lacking the prestige of Yale obviously).
Hope that helps.