@article{ref1,
title="A note on the development of the thought forms of children as described by Piaget",
journal="Journal of abnormal and social psychology",
year="1931",
author="Johnson, E.c. and Josey, C.c.",
volume="26",
number="3",
pages="338-339",
abstract="<p><br/>An attempt was made to duplicate the study of development of logical thinking made by Piaget. The results substantiated few of Piaget's claims. (PsycINFO Database Record (c) 2006 APA, all rights reserved)</p><p />",
language="",
issn="0096-851X",
doi="10.1037/h0075301",
url="http://dx.doi.org/10.1037/h0075301"
}