Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleBBS volume 6 issue 3 Cover and Front matter.PublicationBehavioral & Brain Sciences, 1983, Vol 6, Issue 3, pf1ISSN0140-525XPublication typeArticleDOI10.1017/S0140525X0001637X