Supplementary Information for Study on Tool Use in Infants

last updated, 16 April 2011


Article submitted to Epirob 2011 with video extracts accompanying the figures:
Mechanisms leading to tool use: A longitudinal study in human infants
by J.Kevin O'Regan, L. Rat-Fischer & J. Fagard
Laboratoire Psychologie de la Perception - CNRS UMR 8158
Université Paris Descartes, Paris, France

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*with sincere thanks to the parents and their children for their patience, enthusiasm, interest and energy!
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In addition to the videos accompanying the figures in the online version of the article (see above) the following are a selection of additional video extracts which may be of interest. The codes used in the names are the following:
12mo = 12 months old, etc.

C1: Toy attached to tool; C2: toy inside, touching; C3: toy inside
not touching; C4: toy to the side of too
l; C5: tool given to child in hand

TslashT: Child was interested in either the toy only, or the tool only, or alternated between them
TplusT: Child was interested in the acting on the toy with the tool
ME: Means-End behaviour: the child showed he was beginning to be able to plan a sequence of actions in order to attain his end.
R1: Child understood the tool could be used to obtain the toy, but did not know the exact movement requirement
R2: Child knew how to use the tool properly

12mo_C1_AlmostImmediatelyTakingAttachedObject_Child1.mpg
12mo_C1_ImmediatelyOrientingToolWhenObjectAttached_child3.mpg
12mo_ME_C4_ReflectsBeforeCombiningToolandToy_Child3.mpg
12mo_N_C4_RejectsByTurningTowardMother_child1.mpg
13mo_A_C2_SuccessByContingency_child1.mpg
13mo_TslashT_C2_PointsToObjectRetrieveByContingency_child1.mpg
14mo_C1_AlmostImmediatelyTakinigAttachedObject_Child2.mpg
14mo_R1_C5_awkwardmovement_child1.mpg
14mo_TplusT_C4_PushesObjectWithTool_child1.mpg
15mo_A_C2_SwipesToolonTableNotInterestedinObject_child3.mpg
15mo_TslashT_C4_ToolinMouth_child2.mpg
16mo_A_SuccessByContingency_child1.mpg
16mo_C4_ME_RejectsToolToPointAtToy_Child1.mpg
17mo_C4_ ObjTooGreatlyDesired_child3.mpg
17mo_C5_R1_hittingToGetToy_Child3.mpg
18mo_C4_R1_AwkwardMovements_child1.mpg

We will be adding further extracts soon!

for comments and inquiries please contact jkevin.oregan@gmail.com