Should all stationary objects move when hit? Developments in infants' causal and statistical expectations about collision events

Su Hua Wang, Lisa Kaufman, Renee L Baillargeon

Research output: Contribution to journalArticle

Abstract

Four experiments examined 8- and 9-month-old infants' expectations about collision events. The infants saw test events in which a small cylinder rolled down a ramp and hit one of several different boxes. These boxes varied in width and height and always remained stationary when hit. The results revealed two separate developments. The first involved infants' knowledge of the variables relevant to collision events. At 8 months, the infants expected all of the boxes to move when hit, regardless of their sizes; at 9 months, the infants began to take into account the size of the boxes to predict whether they should move when hit. The second development concerned infants' ability to generate explanations for outcomes that violated their collision knowledge. At both ages, upon observing that a box with a salient vertical dimension did not move when hit, the infants apparently concluded that the box must be one of those objects we term pillars -vertical objects that are attached at one or both ends to adjacent surfaces. At 8 months, the infants considered any vertical box as a potential pillar; at 9 months, the infants considered only boxes that were both vertical and narrow as potential pillars. The development of infants' knowledge about collision events is thus one that is complex and protracted and weaves together many separate developments.

Original languageEnglish (US)
Pages (from-to)529-567
Number of pages39
JournalInfant Behavior and Development
Volume26
Issue number4
DOIs
StatePublished - Dec 1 2003

Fingerprint

Child Development
Vertical Dimension
Architectural Accessibility
Aptitude

Keywords

  • Causal expectations
  • Collision events
  • Infant cognition
  • Physical reasoning
  • Statistical expectations

ASJC Scopus subject areas

  • Developmental and Educational Psychology

Cite this

Should all stationary objects move when hit? Developments in infants' causal and statistical expectations about collision events. / Wang, Su Hua; Kaufman, Lisa; Baillargeon, Renee L.

In: Infant Behavior and Development, Vol. 26, No. 4, 01.12.2003, p. 529-567.

Research output: Contribution to journalArticle

@article{d8bfc87b040146d88c562b606facdc17,
title = "Should all stationary objects move when hit? Developments in infants' causal and statistical expectations about collision events",
abstract = "Four experiments examined 8- and 9-month-old infants' expectations about collision events. The infants saw test events in which a small cylinder rolled down a ramp and hit one of several different boxes. These boxes varied in width and height and always remained stationary when hit. The results revealed two separate developments. The first involved infants' knowledge of the variables relevant to collision events. At 8 months, the infants expected all of the boxes to move when hit, regardless of their sizes; at 9 months, the infants began to take into account the size of the boxes to predict whether they should move when hit. The second development concerned infants' ability to generate explanations for outcomes that violated their collision knowledge. At both ages, upon observing that a box with a salient vertical dimension did not move when hit, the infants apparently concluded that the box must be one of those objects we term pillars -vertical objects that are attached at one or both ends to adjacent surfaces. At 8 months, the infants considered any vertical box as a potential pillar; at 9 months, the infants considered only boxes that were both vertical and narrow as potential pillars. The development of infants' knowledge about collision events is thus one that is complex and protracted and weaves together many separate developments.",
keywords = "Causal expectations, Collision events, Infant cognition, Physical reasoning, Statistical expectations",
author = "Wang, {Su Hua} and Lisa Kaufman and Baillargeon, {Renee L}",
year = "2003",
month = "12",
day = "1",
doi = "10.1016/j.infbeh.2003.08.002",
language = "English (US)",
volume = "26",
pages = "529--567",
journal = "Infant Behavior and Development",
issn = "0163-6383",
publisher = "Elsevier Limited",
number = "4",

}

TY - JOUR

T1 - Should all stationary objects move when hit? Developments in infants' causal and statistical expectations about collision events

AU - Wang, Su Hua

AU - Kaufman, Lisa

AU - Baillargeon, Renee L

PY - 2003/12/1

Y1 - 2003/12/1

N2 - Four experiments examined 8- and 9-month-old infants' expectations about collision events. The infants saw test events in which a small cylinder rolled down a ramp and hit one of several different boxes. These boxes varied in width and height and always remained stationary when hit. The results revealed two separate developments. The first involved infants' knowledge of the variables relevant to collision events. At 8 months, the infants expected all of the boxes to move when hit, regardless of their sizes; at 9 months, the infants began to take into account the size of the boxes to predict whether they should move when hit. The second development concerned infants' ability to generate explanations for outcomes that violated their collision knowledge. At both ages, upon observing that a box with a salient vertical dimension did not move when hit, the infants apparently concluded that the box must be one of those objects we term pillars -vertical objects that are attached at one or both ends to adjacent surfaces. At 8 months, the infants considered any vertical box as a potential pillar; at 9 months, the infants considered only boxes that were both vertical and narrow as potential pillars. The development of infants' knowledge about collision events is thus one that is complex and protracted and weaves together many separate developments.

AB - Four experiments examined 8- and 9-month-old infants' expectations about collision events. The infants saw test events in which a small cylinder rolled down a ramp and hit one of several different boxes. These boxes varied in width and height and always remained stationary when hit. The results revealed two separate developments. The first involved infants' knowledge of the variables relevant to collision events. At 8 months, the infants expected all of the boxes to move when hit, regardless of their sizes; at 9 months, the infants began to take into account the size of the boxes to predict whether they should move when hit. The second development concerned infants' ability to generate explanations for outcomes that violated their collision knowledge. At both ages, upon observing that a box with a salient vertical dimension did not move when hit, the infants apparently concluded that the box must be one of those objects we term pillars -vertical objects that are attached at one or both ends to adjacent surfaces. At 8 months, the infants considered any vertical box as a potential pillar; at 9 months, the infants considered only boxes that were both vertical and narrow as potential pillars. The development of infants' knowledge about collision events is thus one that is complex and protracted and weaves together many separate developments.

KW - Causal expectations

KW - Collision events

KW - Infant cognition

KW - Physical reasoning

KW - Statistical expectations

UR - http://www.scopus.com/inward/record.url?scp=0345307640&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0345307640&partnerID=8YFLogxK

U2 - 10.1016/j.infbeh.2003.08.002

DO - 10.1016/j.infbeh.2003.08.002

M3 - Article

AN - SCOPUS:0345307640

VL - 26

SP - 529

EP - 567

JO - Infant Behavior and Development

JF - Infant Behavior and Development

SN - 0163-6383

IS - 4

ER -