Cited by 238Neuroendocrine regulation and behaviorAttachment and Relationship DynamicsHuman-Animal Interaction Studies

The DOI matches its Crossref record; 39 of the 40 references it cites were found in a registry or an index; none of the 25 sources its claims cite is checked for support yet.

Effects of oxytocin on recollections of maternal care and closeness

Open access

Abstract

Although the infant–caregiver attachment bond is critical to survival, little is known about the biological mechanisms supporting attachment representations in humans. Oxytocin plays a key role in attachment bond formation and maintenance in animals and thus could be expected to affect attachment representations in humans. To investigate this possibility, we administered 24 IU intranasal oxytocin to healthy male adults in a double-blind, placebo-controlled, crossover designed study and then assessed memories of childhood maternal care and closeness—two features of the attachment bond. We found that the effects of oxytocin were moderated by the attachment representations people possess, with less anxiously attached individuals remembering their mother as more caring and close after oxytocin (vs. placebo) but more anxiously attached individuals remembering their mother as less caring and close after oxytocin (vs. placebo). These data contrast with the popular notion that oxytocin has broad positive effects on social perception and are more consistent with the animal literature, which emphasizes oxytocin's role in encoding social memories and linking those memories to the reward value of the social stimulus.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

In a double-blind, placebo-controlled crossover study of 24 IU intranasal oxytocin in healthy men, oxytocin did not broadly improve recollections of childhood maternal care and closeness. Instead, attachment anxiety moderated the effect: less anxious men recalled their mother more positively after oxytocin, while more anxious men recalled her less positively.

Key findings

  • Oxytocin had no main effect on change in maternal care ratings [b = 0.02, t(26) = 0.22, nonsignificant] or maternal closeness ratings [b = −0.03, t(26) = −0.17, ns].
  • Attachment anxiety significantly predicted oxytocin-vs-placebo change in maternal care [b = −0.12, t(26) = −2.16, P < 0.05] and maternal closeness [b = −0.45, t(26) = −2.95, P < 0.01]: less anxiously attached individuals remembered their mother as more caring and close after oxytocin, whereas more anxiously attached individuals remembered their mother as less caring and close.
  • Avoidance and the anxiety × avoidance interaction did not predict change in maternal care (all ts < 1.7) or maternal closeness (all ts < 1.4).
  • Oxytocin did not affect self-esteem, current attachment, closeness to participants’ closest current relationship partner, or state mood (all ts < 1 or ≤ 1), and participants were unaware of drug condition [54.84% receiving placebo and 45.16% receiving oxytocin; χ²(2, n = 62) = 1.42, ns].

Methods

  • Participants were 31 medication-free, healthy men aged 19–45 y (mean, 27.06 y; SD, 7.05 y; median, 25 y) in a randomized, double-blind, placebo-controlled crossover trial; they received 24 IU intranasal oxytocin or matching placebo on two occasions 3–5 wk apart.
  • Baseline measures included the Experience in Close Relationships scale for adult attachment and the Profile of Mood States; approximately 90 min after oxytocin/placebo, recollections of maternal care were assessed with the Parental Bonding Instrument and maternal closeness with the Inclusion of Other in the Self scale.
  • Main analyses used regression with mean-centered attachment anxiety, mean-centered avoidance, their interaction, and drug administration order to predict change scores calculated as oxytocin-day ratings minus placebo-day ratings.

Limitations

  • The paper states that it cannot conclusively determine whether oxytocin increases accuracy of maternal recollections because it lacks information about participants’ attachment style to their mother in childhood, which would be needed for a true accuracy index.
  • The paper states that participants were men, so future research is needed to confirm whether findings generalize to women; it also notes possible measurement issues for current attachment because it assessed general rather than mother-specific attachment.
  • Evident from the text: the sample was small (31 men; regression df = 26), and maternal recollections were retrospective self-reports without independent verification of childhood maternal care or closeness.

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Integrity signals

Registry

Crossref · 10.1073/pnas.1012669107

Cites

39 of 39 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

16 Own result · 13 Sources not found · 7 Own method · 4 Own interpretation

Show all 23 claims

  • It may state two separate claims as one. 7
  • Probably not a substantial claim. 13
17 of 17
  • The paper relies on this without support.

    Intranasal administration of 24 IU oxytocin increases oxytocin availability in the brain.

    “We investigated whether oxytocin is involved in human attachment representations by manipulating the availability of oxytocin in the brain and assessing the effects of oxytocin on recollections of childhood maternal care and closeness—two key features of the attachment bond.”
1 of 1

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Statistics recomputed

Every reported test result, recomputed from its test statistic and degrees of freedom. A result shows as not adding up only once an independent check has confirmed it.

  • Consistentt(26) = -0.17reported n.s. · recomputed p = .866

    “t(26) = −0.17, ns”

  • Consistentt(26) = -2.16reported p < .05 · recomputed p = .040

    “t(26) = −2.16, p < .05”

  • Consistentt(26) = -2.95reported p < .01 · recomputed p = .007

    “t(26) = −2.95, p < .01”

3 of 3

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Percentages, sums and reported differences re-computed from the paper’s own numbers.

Self-check results appear here once an independent check has confirmed them.

Citations

Cites

Show all 40 references

Research works printed but not linked: 2

  1. J Bowlby Attachment and Loss, Volume 1. Attachment (Basic Books, New York, 1969).
  2. DM McNair, M Lorr, LF Dropplemanm EdiITS Manual for the Profile of Mood States (Educational & Industrial Testing Service, San Diego, CA, 1992).

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Metadata

Authors
Bartz, J. A., Zaki, J., Ochsner, K. N., Bolger, N., Kolevzon, A., Ludwig, N., & Lydon, J. E.
Affiliations
  • Icahn School of Medicine at Mount Sinai (US)
  • Harvard University (US)
  • Columbia University (US)
  • McGill University (CA)
Corresponding author
Bartz, Jennifer A.
Venue
Proceedings of the National Academy of Sciences
Published
2010-11-29
Volume
107
Issue
50
Pages
21371-21375
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2152693006
Cited by
238
References
40
Citations by year
2026: 5 · 2025: 5 · 2024: 6 · 2023: 4 · 2022: 8 · 2021: 15 · 2020: 12 · 2019: 11 · 2018: 15 · 2017: 19 · 2016: 27 · 2015: 22 · 2014: 18 · 2013: 34 · 2012: 19
FWCI
8.91
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Beatrice and Samuel A. Seaver Foundation
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Neuroendocrine regulation and behavior
  • Social Sciences › Psychology › Social Psychology › Attachment and Relationship Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Human-Animal Interaction Studies
Keywords
oxytocin, maternal care, attachment representations, childhood memories, closeness, attachment anxiety, social memory, social perception, intranasal oxytocin, social reward
MeSH terms
Administration, Intranasal, Adult, Animals, Double-Blind Method, Humans, Male, Maternal Behavior, Memory, Object Attachment, Oxytocin, Placebos, Social Perception, Cross-Over Studies

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