Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleMental numerosity: Is one head better than two?AuthorsBogen, Joseph E.PublicationBehavioral & Brain Sciences, 1981, Vol 4, Issue 1, p100ISSN0140-525XPublication typeArticleDOI10.1017/S0140525X00007780