Preschoolers make probabilistic backward-blocking causal inferences, with capacities appearing by 18 months¶
Claim · All claims
Evidence · 1 study (2 entries) · reviewr2–r3·q2–q3
Currency · newest study 2012 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2017: baselines and conditions change
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q3 i? Preschool children make correct backward-blocking inferences, judging an object less likely to be causal when another object alone sufficed to activate the machine. → Gopnik 2012
q2 i? Backward blocking appears by 18 months, and anticipatory looking suggests 9-month-olds may infer causation from covariation. → Gopnik 2012 (2)
Evidence¶
Gopnik 2012¶
Gopnik, A., & Wellman, H. M. (2012). Reconstructing constructivism: Causal models, Bayesian learning mechanisms and the theory theory. Psychological Bulletin, 138(6), 1085-1108. https://doi.org/10.1037/a0028044
q3 · i? · review · r2
The review reports Sobel et al. (2004): children saw A alone activate the machine, then A and B together; because A alone sufficed, children judged B less likely to be a blicket. The article notes this inference is probabilistic and hard for associationist theories to explain.
"Sobel et al. (2004) found that preschool children would also make correct causal inferences from more complex statistical patterns, particularly “backward blocking”."
Gopnik 2012 (2)¶
Gopnik, A., & Wellman, H. M. (2012). Reconstructing constructivism: Causal models, Bayesian learning mechanisms and the theory theory. Psychological Bulletin, 138(6), 1085-1108. https://doi.org/10.1037/a0028044
q2 · i? · review · r3
The review attributes to Sobel and Kirkham (2007) backward blocking at 18 months and, in an anticipatory looking task, apparent covariation-based causal inference even in 9-month-olds.
"Sobel and Kirkham (2007) found that children as young as 18 months old also showed similar capacities for backward blocking."
Discussion¶
Related Claims¶
- Children aged 2-4 infer causal structure from covariation and use it to design effective interventions — related
- Children integrate prior knowledge with new statistical evidence in a Bayesian way, overturning initially likely hypotheses — related
- Four-year-olds infer unobserved hidden causes when observed variables cannot explain the evidence — related
- Children extend statistical causal learning to psychological causes, inferring others' desires by 20 months — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
backward-blocking-preschoolers-infants |
title |
Preschoolers make probabilistic backward-blocking causal inferences, with capacities appearing by 18 months |
description |
Preschoolers make probabilistic backward-blocking causal inferences, with capacities appearing by 18 months |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2012 |
recheck_by |
2017 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
2 — gopnik-2012, gopnik-2012-2 |
Frontmatter is the page's machine-readable record — see the Schema & Guide.