“…The items are based on neoteny, child cognition, and more generally psychology literature, and they cover the following six neoteny-related characteristics: play (P. G. Bateson, 1976;Bekoff, 1972;Bjorklund, 1997;Bjorklund & Pellegrini, 2000;Dansky, 1980;Fagen, 1981;Klinger, 1969;Lorenz, 1971;Pellegrini & Bjorklund, 2004;Pellegrini & Smith, 1998;Piaget, 1945Piaget, /1999Vygotsky, 1930Vygotsky, /2004Vygotsky, , 1931Vygotsky, /1991Vygotsky, , 1933Vygotsky, /1967, attachment (Bowlby, 1969(Bowlby, /1982Cairns, 1976;Fraley, Brumbaugh, & Marks, 2005;Fraley & Shaver, 2000;Hazan & Shaver, 1987Insel, 2000), regression (Fischer, 1987;Lindahl, Heimann, & Ullstadius, 2003;Plooij & van de Rijt-Plooij, 1989;van de Rijt-Plooij & Plooij, 1992), egocentrism (Arnett, 1992;Arnett & BalleJensen, 1993;Bjorklund, Gaultney, & Green, 1993;Buss, 1997;Chandler & Greenspan, 1972;Elkind, 1967Elkind, , 1978Gnepp, 1983;Greene, Krcmar, Walters, Rubin, & Hale, 2000;Harter & Pike, 1984;Looft, 1972;…”