Acute alcohol produces a significant main effect on performance on most cognitive tasks, with partial eta-squared effect sizes from 0.07 to 0.37, but not on TSP or SART-OM¶
Claim · All claims
Evidence · 1 study · causalr2·q3·i2medium
Currency · newest study 2012 · not yet checked against its sources · not reviewed by a person
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 i2 Repeated-measures ANOVA showed a strong significant main effect of alcohol on every task except TSP and SART-OM, with partial eta-squared ranging from 0.07 to 0.37. → Dry MJ 2012
Evidence¶
Dry MJ 2012¶
Dry MJ, Burns NR, Nettelbeck T, Farquharson AL, White JM (2012) Dose-Related Effects of Alcohol on Cognitive Functioning. PLoS ONE 7(11): e50977. https://doi.org/10.1371/journal.pone.0050977
q3 · i2 · causal · r2
Mixed-design experiment with 56 adults randomized to alcohol or control, tested at four BAC time-points on six psychometric tests. The ANOVA found a "strong and significant main effect of alcohol" with printed effect sizes partial η² = 0.07 to 0.37 for all tasks except TSP and SART-OM.
"Repeated measures analysis of variance indicated that for each of the tasks excepting TSP and the SART-OM there was a strong and significant main effect of alcohol, with effect sizes (partial g2) ranging from 0.07 to 0.37 (Table 2)."
Discussion¶
Related Claims¶
- TSP (complex spatial problem solving) and SART-OM (vigilance for frequent events) showed no significant alcohol effects, an outcome the authors report as unexpected — possibly the same claim (merge candidate)
- Only SOPT, IT and SART-CO showed significant impairment at the lowest blood alcohol concentration of 0.048%, with large effect sizes (d = 0.76, 0.65 and 1.06) — a narrower finding that bears on this claim
- The authors conclude Inspection Time has strong potential as a single marker test sensitive to the time course of alcohol intoxication — related
- SART-CO errors rose sharply at BAC 0.048% but changed little thereafter across the 0.048% to 0.10% range, with a suspected ceiling effect — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
alcohol-main-effect-nonuniform-cognitive-tasks |
title |
Acute alcohol produces a significant main effect on performance on most cognitive tasks, with partial eta-squared effect sizes from 0.07 to 0.37, but not on TSP or SART-OM |
description |
Acute alcohol produces a significant main effect on performance on most cognitive tasks, with partial eta-squared effect sizes from 0.07 to 0.37, but not on TSP or SART-OM |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2012 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — dry-mj-2012 |
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