Evidence map›Paper›PMID 42837467›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2026

Maternal ranging strategies facilitate offspring social play at energetic cost in the most solitary ape.

Odd T Jacobson, Alison M Ashbury, Brendan J Barrett, Margaret C Crofoot, Paulina Kukofka, Julia A Kunz, Sri Suci Utami Atmoko, Caroline Schuppli, Erin R Vogel, Carel P van Schaik and 1 more

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Maternal ranging strategies facilitate offspring social play at energetic cost in the most solitary ape.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Odd T JacobsonDepartment for the Ecology of Animal Societies, Max Planck Institute of Animal Behavior, Konstanz 78467, Germany.ORCID 0000-0002-2954-6264
Alison M AshburyDepartment for the Ecology of Animal Societies, Max Planck Institute of Animal Behavior, Konstanz 78467, Germany.ORCID 0000-0002-5181-4667
Brendan J BarrettDepartment for the Ecology of Animal Societies, Max Planck Institute of Animal Behavior, Konstanz 78467, Germany.ORCID 0000-0002-2725-2385
Margaret C CrofootDepartment for the Ecology of Animal Societies, Max Planck Institute of Animal Behavior, Konstanz 78467, Germany.
Paulina KukofkaDepartment for the Ecology of Animal Societies, Max Planck Institute of Animal Behavior, Konstanz 78467, Germany.ORCID 0009-0000-6552-4591
Julia A KunzDepartment of Evolutionary Anthropology, University of Zurich, Zurich 8057, Switzerland.ORCID 0000-0002-0381-2982
Sri Suci Utami AtmokoBiology Program, Faculty of Biology and Agriculture, Universitas Nasional, Jakarta Selatan 12510, Indonesia.
Caroline SchuppliDepartment of Evolutionary Anthropology, University of Zurich, Zurich 8057, Switzerland.ORCID 0000-0001-6318-2815
Erin R VogelDepartment of Anthropology, The State University of New Jersey, Rutgers, New Brunswick, NJ 08901.ORCID 0000-0001-6304-5423
Carel P van SchaikDepartment of Evolutionary Anthropology, University of Zurich, Zurich 8057, Switzerland.ORCID 0000-0001-5738-4509
Maria A van NoordwijkDepartment of Evolutionary Anthropology, University of Zurich, Zurich 8057, Switzerland.ORCID 0000-0001-9633-0845

Funding

A.H. Schultz-Stiftung zur Förderung Primatologischer Forschung (A.H. Schultz-Stiftung) N/AAlexander von Humboldt-Stiftung (AvH) N/AMax-Planck-Institut für Verhaltensbiologie N/ASwiss National Science Foundation 310030B_160363Swiss National Science Foundation 3100A-116848University of Zurich N/A
6 · The paper itself

Abstract

In most vertebrates, social play among peers is considered essential for behavioral development. Yet in solitary species bearing single offspring, opportunities for social play are inherently scarce. Whether mothers of such species actively facilitate play opportunities for their offspring, and at what cost, remains unknown. We used 15 y of behavioral and movement data (∼32,600 observation hours) from 31 wild Bornean orangutan (

Indexed as

Behavior, AnimalEnergy MetabolismMaternal BehaviorPongo pygmaeusSocial BehaviorAnimalsFemaleMaleMothersPlay and Playthingsfacultative socialitymovement ecologyorangutanparental investment

Identifiers

PMID42837467
PMCPMC13684041

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.