 It is not universally accepted, however, that success in the mirror test is an indication of self-consciousness. For example, Heyes (1994) presents an influential critique of the claim that it is a marker of self-awareness, arguing that all that is required for success is that subjects be able to distinguish between novel ways of receiving bodily feedback in order to guide behaviour, on the one hand, and other forms of incoming sensory data, on the other. Such a view, however, needs to explain why it is that passing the mirror test seems to be connected with the phenomena arguably associated with self-consciousness, such as experiencing shame and embarrassment (M. Lewis 2011). There remains, then, significant controversy concerning what success in the mirror test really shows, and so whether it can shed light on the development of self-awareness (see, for example, Mitchell 1993; Suddendorf &amp; Butler 2013; Gallup, Platek, &amp; Spaulding 2014. For related philosophical discussion, see Rochat &amp; Zahavi 2011; Peacocke 2014: ch.8).