1. Alberts, J. R. (2008): ‘The nature of nurturant niches in ontogeny’, Philosophical Psychology 21 (Special Issue, Reconciling Nature and Nurture in the study of Cognition and Behavior): 295–303.
2. Allen, C. (2006): ‘Transitive Inference in Animals: Reasoning or Conditioned Associations?’ In Hurley and Nudds (eds.) Rational Animals? Oxford: Oxford University Press, 175–185.
3. Allen, C., Grau, J. W. and Meagher, M. W. (2009): ‘The Lower Bounds of Cognition: What Do Spinal Cords Reveal?’ In: J. Bickle (ed.): The Oxford Handbook of Philosophy and Neuroscience, Oxford: Oxford University Press.
4. Baker, M. D. & Stock, J. B. (2007): ‘Signal Transduction: Networks and Integrated Circuits in Bacterial Cognition’, Current Biology 17: R1021–R1024.
5. Ben-Barak, I. (2008): Small Wonders: How Microbes Rule Our World, Carlton North (Vic.): Scribe Publication.