by Langer, Karen G, Samuels, Mark C
Published in Cognitive and behavioral neurology (01.12.2008)

by Samuels, Mark C., McDonald, John
Published in Child development (01.05.2002)

by Frye, Douglas
Published in Developmental psychology (1996)

by Braine, Martin D. S
Published in Cognitive development (01.10.1993)

by Cormack, Robert H, Holson, Robert, Samuels, Mark C
Published in Skeptical Inquirer (01.01.2003)