“…Difficulties in differentiating and remembering lateral reflections or enantiomorphs have been reported in infants (e.g., Bornstein et al, 1978; Bornstein, 1982), children (e.g., Gibson et al, 1962; Rudel and Teuber, 1963; Cronin, 1967; Gibson, 1969; Casey, 1984; Shepp et al, 1987; de Kuijer et al, 2004), and even adults (e.g., Butler, 1964; Sekuler and Houlihan, 1968; Standing et al, 1970; Wolf, 1971; Farrell, 1979; Nickerson and Adams, 1979; Martin and Jones, 1997; de Kuijer et al, 2004; Rentschler and Jüttner, 2007), for whom long-term priming (with primes and probes separated by several minutes) is unaffected by left-right reflection (e.g., Biederman and Cooper, 1991; Stankiewicz et al, 1998; Fiser and Biederman, 2001). Mirror invariance seems to have been deeply rooted by evolution into the visual system: many animals (e.g., fishes, octopuses, rodents, and monkeys) are also confused by enantiomorphs (e.g., Sutherland, 1960; see a review in, e.g., Corballis and Beale, 1976), and neurons in the monkeys' inferotemporal cortex generalize over mirror reversal (Logothetis and Pauls, 1995; Logothetis et al, 1995; Rollenhagen and Olson, 2000; Baylis and Driver, 2001).…”