| [1] | Gopnik A, Wellman HM (1994) The theory theory. In: Lawrence A, editor,. Mapping the mind: Domain specificity in cognition and culture. New York, NY US: Cambridge University Press. pp. 257–293.
|
| [2] | Penn D, Povinelli D (2007) Causal cognition in human and nonhuman animals: A comparative, critical review. Annu Rev Psychol 58: 97–118. doi: 10.1146/annurev.psych.58.110405.085555
|
| [3] | Bonawitz EB, Ferranti D, Saxe R, Gopnik A, Meltzoff AN, et al. (2010) Just do it? Investigating the gap between prediction and action in toddlers' causal inferences. Cognition 115: 104–117. doi: 10.1016/j.cognition.2009.12.001
|
| [4] | Penn DC, Holyoak KJ, Povinelli DJ (2008) Darwin's mistake: Explaining the discontinuity between human and nonhuman minds. Behav Brain Sci 31: 109–129. doi: 10.1017/s0140525x08003543
|
| [5] | Visalberghi E, Limongelli L (1994) Lack of comprehension of cause effect relations in tool-using capuchin monkeys (Cebus apella). J Comp Psychol 108: 15–22. doi: 10.1037/0735-7036.108.1.15
|
| [6] | Povinelli DJ, Reaux JE, Theall LA, Giambrone S, Humphrey N (2000) Folk physics for apes: The chimpanzee's theory of how the world works. Oxford: Oxford University Press.
|
| [7] | Mulcahy NJ, Call J (2006) How great apes perform on a modified trap-tube task. Anim Cogn 9: 193–199. doi: 10.1007/s10071-006-0019-6
|
| [8] | Seed AM, Tebbich S, Emery NJ, Clayton NS (2006) Investigating Physical Cognition in Rooks, Corvus frugilegus. Curr Biol 16: 697–701. doi: 10.1016/j.cub.2006.02.066
|
| [9] | Martin-Ordas G, Call J, Colmenares F (2008) Tubes, tables and traps: great apes solve two functionally equivalent trap tasks but show no evidence of transfer across tasks. Anim Cogn 11: 423–430. doi: 10.1007/s10071-007-0132-1
|
| [10] | Seed AM, Call J, Emery NJ, Clayton NS (2009) Chimpanzees solve the trap problem when the confound of tool-use is removed. J Exp Psychol Anim B 35: 23–34. doi: 10.1037/a0012925
|
| [11] | Taylor AH, Hunt GR, Medina FS, Gray RD (2009) Do New Caledonian crows solve physical problems through causal reasoning? P Roy Soc B-Biol Sci 276: 247–254. doi: 10.1098/rspb.2008.1107
|
| [12] | Taylor AH, Clayton NS (2012) Evidence from convergent evolution and causal reasoning suggests that conclusions on human uniqueness may be premature. Behav Brain Sci 35: 241–242. doi: 10.1017/s0140525x11001956
|
| [13] | Jelbert SA, Taylor AH, Cheke LG, Clayton NS, Gray RD (2014) Using the Aesop's Fable paradigm to investigate causal understanding of water displacement by New Caledonian crows. PLOS ONE 9: e92895. doi: 10.1371/journal.pone.0092895
|
| [14] | Silva FJ, Page DM, Silva KM (2005) Methodological-conceptual problems in the study of chimpanzees' folk physics: how studies with adult humans can help. Anim Learn Behav 33: 47–58. doi: 10.3758/bf03196049
|
| [15] | Bird CD, Emery NJ (2009) Rooks use stones to raise the water level to reach a floating worm. Curr Biol 19: 1410–1414. doi: 10.1016/j.cub.2009.07.033
|
| [16] | Cheke LG, Loissel E, Clayton NS (2012) How do children solve Aesop's fable? PLOS ONE 7: e40574. doi: 10.1371/journal.pone.0040574
|
| [17] | Taylor AH, Elliffe DM, Hunt GR, Emery NJ, Clayton NS, et al. (2011) New Caledonian crows learn the functional properties of novel tool types. PLOS ONE 6: e26887. doi: 10.1371/journal.pone.0026887
|
| [18] | Cheke LG, Bird CD, Clayton NS (2011) Tool-use and instrumental learning in the Eurasian jay (Garrulus glandarius). Anim Cogn 14: 441–455. doi: 10.1007/s10071-011-0379-4
|
| [19] | Mulcahy NJ, Call J (2009) The Performance of Bonobos (Pan paniscus), Chimpanzees (Pan troglodytes), and Orangutans (Pongo pygmaeus) in two versions of an object-choice task. J Comp Psychol 123: 304–309. doi: 10.1037/a0016222
|
| [20] | Taylor AH, Gray RD (2009) Animal cognition: Aesop's fable flies from fiction to fact. Curr Biol 19: R731–R732. doi: 10.1016/j.cub.2009.07.055
|
| [21] | Taylor AH, Medina FS, Holzhaider JC, Hearne LJ, Hunt GR, et al. (2010) An investigation into the cognition behind spontaneous string pulling in New Caledonian crows. PLOS ONE 5: e9345. doi: 10.1371/journal.pone.0009345
|
| [22] | Hunt GR (1996) Manufacture and use of hook-tools by New Caledonian crows. Nature 379: 249–251. doi: 10.1038/379249a0
|
| [23] | Taylor AH, Miller R, Gray RD (2012) New Caledonian crows reason about hidden causal agents. Proc Natl Acad Sci 109: 16389–16391. doi: 10.1073/pnas.1208724109
|
| [24] | Kenward B, Rutz C, Weir AAS, Chappell J, Kacelnik A (2004) Morphology and sexual dimorphism of the New Caledonian crow Corvus moneduloides, with notes on its behaviour and ecology. Ibis 146: 652–660. doi: 10.1111/j.1474-919x.2004.00299.x
|
| [25] | R Core Team (2013) R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna Austria. R Project website. Available: http://www.R-project.org Accessed 2013 Nov 2.
|
| [26] | Bates D, Maechler M, Bolker B (2011) lme4: Linear mixed-effects models using S4 classes. R package version 0.999375-42. R Project website. Available: http://CRAN.R-project.org/package=lme4. Accessed 2013 November 2.
|
| [27] | Barton K (2012) MuMIn: Multi-model inference. R package version 1.7.7. R Project website. Available: http://CRAN.R-project.org/package=MuMIn. Accessed 2013 November 2.
|
| [28] | Burnham KP, Anderson DR (2002) Model selection and multimodel inference: a practical information- theoretic approach, 2nd edn. Springer, New York.
|
| [29] | Silva FJ, Silva KM, Cover KR, Leslie AL, Rubalcaba MA (2008) Humans' folk physics is sensitive to physical connection and contact between a tool and reward. Behav Process 77: 327–333. doi: 10.1016/j.beproc.2007.08.001
|
