Children in the reliable condition were significantly more likely to wait the full 15 min than children in the unreliable condition (64.3% vs 7.1%)¶
Claim · All claims
Evidence · 1 study · causalr2·q3
Currency · newest study 2013 · not yet checked against its sources · not reviewed by a person
Subclaims¶
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q3 i? 9 of 14 children in the reliable condition waited the full 15 min versus 1 of 14 in the unreliable condition, a significant difference in proportions. → Kidd 2013
Evidence¶
Kidd 2013¶
Kidd, C., Palmeri, H., & Aslin, R. N. (2013). Rational snacking: Young children's decision-making on the marshmallow task is moderated by beliefs about environmental reliability. Cognition, 126(1), 109-114. https://doi.org/10.1016/j.cognition.2012.08.004
q3 · i? · causal · r2
Binary analysis of the same 28-child randomized experiment (Fig. 2): whether children waited the full 15 min without tasting the marshmallow. The proportion difference was tested with Newcombe's two-sample test with continuity correction, X2 = 7.62, df = 1, p < 0.006; no effect size is printed.
"In the unreliable condition, only 1 out of the 14 children (7.1%) waited the full 15 min; in the reliable condition, however, 9 out of the 14 children (64.3%) waited. A two-sample test for equality of proportions with continuity correction at α2-tail = 0.05 (Newcombe, 1998) was highly significant (X2 = 7.62, df = 1, p < 0.006)."
Discussion¶
Related Claims¶
- Age and gender did not significantly predict marshmallow-task wait-times in this sample when controlling for condition — related
- Children in the reliable condition waited significantly longer on the marshmallow task than children in the unreliable condition (p < 0.0005) — related
- Children's wait-times on sustained delay-of-gratification tasks reflect beliefs about environmental reliability in addition to self-control capacity — a broader claim this one bears on
- Mood-related measures (contentedness, smiling, fidgetiness) did not vary systematically across the reliable and unreliable conditions — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
reliable-condition-full-15-minute-waiting-proportion |
title |
Children in the reliable condition were significantly more likely to wait the full 15 min than children in the unreliable condition (64.3% vs 7.1%) |
description |
Children in the reliable condition were significantly more likely to wait the full 15 min than children in the unreliable condition (64.3% vs 7.1%) |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2013 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — kidd-2013 |
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