Effects of alcohol on sequential information processing: Evidence for temporal myopia.
DOI: 10.1037/a0028535
archive: archived pipeline: cataloged verified
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Summary
This study investigates the effects of alcohol on sequential information processing to test the temporal domain of Alcohol Myopia Theory (AMT). AMT posits that alcohol restricts attentional focus, causing behavior to be driven by immediate, salient cues while ignoring peripheral or distal information. While AMT is typically examined in spatial attention tasks, this research addresses a gap by testing whether alcohol similarly narrows attention in the temporal domain, specifically regarding how individuals process sequences of events in working memory. The authors hypothesized that alcohol would increase the salience of recently encountered information, altering the typical neural and behavioral responses associated with updating mental representations of past stimuli. The experiment involved 71 current drinkers (ages 21–29) who were randomly assigned to consume either a placebo, a low dose of alcohol (0.40 g/kg ethanol), or a high dose (0.80 g/kg ethanol). Participants performed an auditory discrimination task where they categorized randomly presented high or low tones as quickly and accurately as possible. Event-related potentials (ERPs) were recorded to measure the P300 component, which reflects the extent of active representation in working memory. The study analyzed "sequential effects," comparing responses when a current target differed from the tone presented one trial previously (one-back) versus two trials previously (two-back). This design allowed researchers to determine if alcohol altered the cognitive weight assigned to proximal versus distal events. The results demonstrated a clear interaction between alcohol consumption and sequential processing. Placebo participants exhibited the classic sequential effect pattern: they showed increased P300 amplitude and slowed behavioral responses when the current target differed from the two-back tone, indicating that distal events require more updating because their mental representations are fainter. In contrast, alcohol consumption reversed this pattern. Participants in the alcohol groups showed increased P300 amplitude and response slowing when the target differed from the one-back tone. This suggests that under the influence of alcohol, the most recently encountered information became disproportionately salient, necessitating greater cognitive updating for changes relative to immediate prior stimuli, while distal information was effectively ignored. These findings provide empirical support for the extension of Alcohol Myopia Theory into the temporal domain. The results indicate that alcohol does not merely impair executive control or task-switching but specifically narrows the temporal focus of attention, causing individuals to overweight immediate cues at the expense of broader contextual history. This "temporal myopia" has significant implications for understanding alcohol-related behaviors, such as risky decision-making, where individuals may focus on immediate rewards or cravings while failing to integrate longer-term consequences or historical context into their judgments.
Key finding
Alcohol consumption shifts the focus of temporal attention to more recent stimuli, as evidenced by increased P300 amplitude and response slowing for targets differing from the immediately preceding tone rather than the tone presented two trials prior.
Methodology
lab_experiment
Sample size: 71
Provenance
The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via author_sweep_intake on 2026-05-28.
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | author_sweep | — | — | 2 | 2026-05-28 |
| archive | success | canonical_url | — | — | 11 | 2026-06-06 |
| extract | success | cached | — | — | 3 | 2026-06-10 |
| clean | success | clean | — | — | 1 | 2026-06-04 |
| chunk | success | chunk | — | — | 1 | 2026-06-04 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-06-04 |
| enrich | success | — | — | — | 1 | 2026-05-28 |
| promote | success | — | — | — | 1 | 2026-06-04 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 2 | 2026-06-10 |
| tag | success | vector_similarity | — | — | 15 | 2026-06-11 |
| verify | success | — | — | — | 2 | 2026-06-10 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.
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