The DOI matches its OpenAlex record; 1 of the 1 references it cites were found in a registry or an index.
Changes in Cooperation and Self-Other Differentiation during the Second Year
Abstract
Cooperation in peer interaction emerges during the second half of the second year. A consideration of the skills and knowledge entailed in these early forms of cooperation suggests that young children's emerging ability to differentiate self from other as causal agents may relate to their ability to coordinate behavior with age mates toward a common goal. Children at 12, 18, 24, and 30 months were observed in same-age, same-sex dyads (8 dyads per age) while attempting to solve a simple cooperation problem. They were also individually administered an elicited imitation task used to index decentration, or self-other differentiation. No 12-month-old dyad could cooperate, 18-month-olds did so infrequently and apparently accidentally, whereas 24- and 30-month-olds were able to coordinate behavior with one another quickly and effectively. Children who were better able to accommodate their behavior to one another during cooperation also represented the agency of others at a more advanced, decentered level.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
The construction of reality in the child.
Piaget, J. (1954) · doi:10.1037/11168-000 · Cited by 4,558
Cited by
Understanding and sharing intentions: The origins of cultural cognition
Tomasello, M., Carpenter, M., Call, J., Behne, T., & Moll, H. (2005) · Behavioral and Brain Sciences · doi:10.1017/s0140525x05000129 · Cited by 4,882
Empathy: its ultimate and proximate bases
Preston, S. D., & de Waal, F. B. M. (2002) · Behavioral and Brain Sciences · doi:10.1017/s0140525x02000018 · Cited by 4,126
The functional architecture of human empathy
Decety, J., & Jackson, P. L. (2004) · Behavioral and Cognitive Neuroscience Reviews · doi:10.1177/1534582304267187 · Cited by 3,407
Tomasello, M., Kruger, A. C., & Ratner, H. H. (1993) · Behavioral and Brain Sciences · doi:10.1017/s0140525x0003123x · Cited by 1,891
Toddlers’ Prosocial Behavior: From Instrumental to Empathic to Altruistic Helping
Svetlova, M., Nichols, S. R., & Brownell, C. A. (2010) · Child Development · doi:10.1111/j.1467-8624.2010.01512.x · Cited by 601
Self-citation
Metadata
- Authors
- Brownell, C. A., & Carriger, M. S.
- Venue
- Child Development
- Publisher
- Oxford University Press (OUP)
- Published
- 1990-08
- Volume
- 61
- Issue
- 4
- Pages
- 1164
- ISSN
- 0009-3920 (ISSN-L)
- OpenAlex
- W2068555008
- Cited by
- 270
- References
- 1
- FWCI
- 20.44
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Changes in Cooperation and Self-Other Differentiation during the Second Year. https://app.cochat.ai/papers/10.1111/j.1467-8624.1990.tb02850.x
- The paper
- Brownell, C. A., & Carriger, M. S. (1990). Changes in Cooperation and Self-Other Differentiation during the Second Year. Child Development. https://doi.org/10.1111/j.1467-8624.1990.tb02850.x
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
