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Planning steps forward in development: in girls earlier than in boys.


ABSTRACT: The development of planning ability in children initially aged four and five was examined longitudinally with a retest-interval of 12 months using the Tower of London task. As expected, problems to solve straightforward without mental look-ahead were mastered by most, even the youngest children. Problems demanding look-ahead were more difficult and accuracy improved significantly with age and over time. This development was strongly moderated by sex: In contrast to coeval boys, four year old girls showed an impressive performance enhancement at age five, reaching the performance of six year olds, whereas four year old boys lagged behind and caught up with girls at the age of six, the typical age of school enrollment. This sex-specific development of planning was clearly separated from overall intelligence: young boys showed a steeper increase in raw intelligence scores than girls, whereas in the older groups scores developed similarly. The observed sex differences in planning development are evident even within a narrow time window of twelve months and may relate to differences in maturational trajectories for girls and boys in dorsolateral prefrontal cortex.

SUBMITTER: Unterrainer JM 

PROVIDER: S-EPMC3842368 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Planning steps forward in development: in girls earlier than in boys.

Unterrainer Josef M JM   Ruh Nina N   Loosli Sandra V SV   Heinze Katharina K   Rahm Benjamin B   Kaller Christoph P CP  

PloS one 20131127 11


The development of planning ability in children initially aged four and five was examined longitudinally with a retest-interval of 12 months using the Tower of London task. As expected, problems to solve straightforward without mental look-ahead were mastered by most, even the youngest children. Problems demanding look-ahead were more difficult and accuracy improved significantly with age and over time. This development was strongly moderated by sex: In contrast to coeval boys, four year old gir  ...[more]

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