title: Animals represent the past and the future.
abstract: It has been proposed by some that only humans have the ability to mentally travel back in time (i.e., have episodic memory) and forward in time (i.e., have the ability to simulate the future). However, there is evidence from a variety of nonhuman animals (e.g., primates, dolphins, scrub jays, rats, and pigeons) that they have some ability to recover personal memories of what-where-when an event occurred (an earlier requirement of the ability to recover an episodic memory) and answer unexpected questions (another requirement to distinguish between semantic and episodic memory). Also, perhaps more critically, according to Tulving’s more recent definition of mental time-travel, several animals (primates and scrub jays) have been shown to be able to pass the spoon test. That is, they are able to plan for the future. Thus, although humans show an advanced ability to mentally travel backward and forward in time, there is growing evidence that nonhuman animals have some of this capacity as well.
authors.affiliation: Department of Psychology, University of Kentucky, Lexington, KY, USA. zentall@uky.edu
authors.forename: Thomas R
authors.initials: TR
authors.lastname: Zentall
mesh_terms: D000818:Animals; D006801:Humans; D061212:Memory, Episodic; D011939:Mental Recall; D013850:Thinking
references.citation: Behav Processes. 2009 Mar;80(3):314-24
references.pmid: 20522320
references.citation: Behav Processes. 2009 Mar;80(3):238-46
references.pmid: 20161113
references.citation: Genet Soc Gen Psychol Monogr. 1997 May;123(2):133-67
references.pmid: 9204544
references.citation: Nature. 1998 Sep 17;395(6699):272-4
references.pmid: 9751053
references.citation: Psychon Bull Rev. 2001 Dec;8(4):685-90
references.pmid: 11848586
references.citation: Learn Behav. 2004 Nov;32(4):377-90
references.pmid: 15825880
references.citation: Anim Cogn. 2008 Oct;11(4):661-74
references.pmid: 18553113
references.citation: Anim Cogn. 2009 Jan;12(1):119-25
references.pmid: 18670793
references.citation: J Comp Psychol. 2006 Nov;120(4):345-57
references.pmid: 17115855
references.citation: J Cogn Neurosci. 1993 Fall;5(4):375-89
references.pmid: 23964914
references.citation: Science. 2006 May 19;312(5776):1038-40
references.pmid: 16709782
references.citation: Q J Exp Psychol (Hove). 2008;61(12):1785-92
references.pmid: 18609388
references.citation: Science. 1979 Apr 6;204(4388):83-5
references.pmid: 432629
references.citation: Psychol Rev. 2004 Apr;111(2):486-511
references.pmid: 15065919
references.citation: Curr Biol. 2006 Jul 11;16(13):1317-21
references.pmid: 16824919
references.citation: J Comp Psychol. 2003 Jun;117(2):176-87
references.pmid: 12856788
references.citation: Nature. 2001 Nov 22;414(6862):443-6
references.pmid: 11719804
references.citation: J Exp Anal Behav. 1999 Mar;71(2):215-51
references.pmid: 10220931
references.citation: Behav Processes. 2008 Oct;79(2):93-8
references.pmid: 18602224
references.citation: Trends Cogn Sci. 2009 Jun;13(6):271-7
references.pmid: 19447669
references.citation: J Gen Psychol. 2002 Oct;129(4):415-29
references.pmid: 12494992
references.citation: Dev Rev. 2007 Sep;27(3):349-373
references.pmid: 18769510
references.citation: Science. 2006 Jun 16;312(5780):1662-5
references.pmid: 16709747
references.citation: J Exp Psychol Anim Behav Process. 2007 Oct;33(4):361-70
references.pmid: 17924785
references.citation: Trends Cogn Sci. 2003 Sep;7(9):391-396
references.pmid: 12963469
references.citation: Psychol Bull. 2002 May;128(3):473-89
references.pmid: 12002698
references.citation: Nature. 2007 Feb 22;445(7130):919-21
references.pmid: 17314979
references.citation: J Exp Child Psychol. 1995 Jun;59(3):516-48
references.pmid: 7622991
references.citation: J Exp Psychol Anim Behav Process. 2003 Jan;29(1):14-22
references.pmid: 12561130
references.citation: Anim Cogn. 2009 Nov;12(6):767-77
references.pmid: 19466468
references.citation: Proc Natl Acad Sci U S A. 2009 Jun 9;106(23):9525-9
references.pmid: 19458264
references.citation: Learn Behav. 2007 Aug;35(3):184-9
references.pmid: 17918424
references.citation: J Exp Psychol Anim Behav Process. 1998 Apr;24(2):215-28
references.pmid: 9556910
references.citation: Behav Brain Res. 2010 Dec 31;215(2):235-43
references.pmid: 20211205
references.citation: J Exp Child Psychol. 2009 Apr;102(4):379-91
references.pmid: 19232416
references.citation: Proc Biol Sci. 2000 Apr 22;267(1445):829-33
references.pmid: 10819154
references.citation: J Exp Psychol Anim Behav Process. 1999 Jan;25(1):82-91
references.pmid: 9987859
references.citation: Philos Trans R Soc Lond B Biol Sci. 2009 May 12;364(1521):1317-24
references.pmid: 19528013
references.citation: Behav Brain Res. 2010 Dec 31;215(2):292-8
references.pmid: 19962409
references.citation: J Exp Psychol Anim Behav Process. 1987 Apr;13(2):107-15
references.pmid: 3572305
references.citation: Curr Biol. 2012 Jun 19;22(12):1149-53
references.pmid: 22633809