Age-related changes in children's use of external representations.

This study explored children's use of external representations. Experiment 1 focused on representations of self: Self-recognition was assessed by a mark test as a function of age (3 vs. 4 years), delay (5 s vs. 3 min), and media (photographs vs. drawings). Four-year-olds outperformed 3-year-olds; children performed better with photographs than drawings; and there was no effect of delay. In Experiment 2, 3- and 4-year-olds used a delayed video image to locate a sticker on themselves (self task) or a stuffed animal (other task). The 2 tasks were positively correlated with age and vocabulary partialed out. Experiment 3 used a search task to assess whether children have particular difficulty using external representations that conflict with their expectations: 3- and 4-year-olds were informed of an object's location verbally or through video: on half of the trials, this information conflicted with children's initial belief. Three-year-olds performed worse than 4-year-olds on conflict trials, indicating that assessments of self and other understanding may reflect children's ability to reason about conflicting external representations.

[1]  Young Children's Use of Dolls to Represent Themselves , 1999 .

[2]  D. Povinelli,et al.  Self-recognition in young children using delayed versus live feedback: evidence of a developmental asynchrony. , 1996, Child development.

[3]  D. Povinelli,et al.  Young children's understanding of briefly versus extremely delayed images of the self: emergence of the autobiographical stance. , 1998, Developmental psychology.

[4]  R. Day,et al.  Do infants use their own images to locate objects reflected in a mirror? , 1990, Child development.

[5]  D. Povinelli.  Chapter 9 – The Unduplicated Self , 1995 .

[6]  T. Suddendorf,et al.  Children's understanding of the relation between delayed video representation and current reality: a test for self-awareness? , 1999, Journal of experimental child psychology.

[7]  D. Zaitchik,et al.  When representations conflict with reality: The preschooler's problem with false beliefs and “false” photographs , 1990, Cognition.

[8]  John H. Flavell,et al.  The development of children's knowledge about the mind: From cognitive connections to mental representations. , 1988 .

[9]  B. Amsterdam,et al.  Mirror self-image reactions before age two. , 1972, Developmental psychobiology.

[10]  Douglas Frye,et al.  Theory of mind and rule-based reasoning , 1995 .

[11]  Douglas Frye,et al.  Cognitive complexity and control: A theory of the development of deliberate reasoning and intentional action , 1997 .

[12]  J. Deloache,et al.  The medium can obscure the message: young children's understanding of video. , 1998, Child development.

[13]  J. Flavell,et al.  Development of knowledge about the appearance-reality distinction. , 1986, Monographs of the Society for Research in Child Development.

[14]  J. Hudson,et al.  Déjà vu all over again: effects of reenactment on toddlers' event memory. , 1998, Child development.

[15]  J. Deloache.  Young children's understanding of the correspondence between a scale model and a larger space , 1989 .

[16]  G. Gallup.  Chimpanzees: Self-Recognition , 1970, Science.

[17]  P. Zelazo.  Towards a characterization of minimal consciousness , 1996 .

[18]  J. Perner.  Understanding the Representational Mind , 1993 .

[19]  D. Olson,et al.  Developing theories of mind , 1988 .

[20]  E. Bialystok.  Cognitive Complexity and Attentional Control in the Bilingual Mind , 1999 .

[21]  John H. Flavell,et al.  Do young children think of television images as pictures or real objects , 1990 .

[22]  Test-retest reliability for false-belief tasks. , 1996, Journal of child psychology and psychiatry, and allied disciplines.

[23]  H. Wimmer,et al.  Three-year-olds' difficulty with false belief: The case for a conceptual deficit , 1987 .

[24]  W. James.  The knowing of things together. , 1895 .

[25]  B. Priel,et al.  Self-recognition: a study of a population without mirrors. , 1986, Journal of experimental child psychology.

[26]  H. Beilin,et al.  Children's belief in photographic fidelity. , 1981 .

[27]  J. Deloache.  Symbolic functioning in very young children: understanding of pictures and models. , 1991, Child development.

[28]  D. Olson.  The Development of Representations: The Origins of Mental Life , 1993 .

[29]  A. Gopnik,et al.  Children's understanding of representational change and its relation to the understanding of false belief and the appearance-reality distinction. , 1988, Child development.

[30]  Michael Lewis,et al.  Social cognition and the acquisition of self , 1979 .