On this page
Study design
Researchers coordinated analyses of six intensive longitudinal studies with 1,088 participants in the United States, spanning clinical and non-clinical samples. Participants repeatedly rated fatigue in daily life and completed brief processing-speed tests; models tested whether current fatigue and speed predicted the later relationship between feeling tired and performing.
Findings
When people felt more fatigued than their own average, their processing-speed scores were slightly poorer at the same time. Both above-usual fatigue and faster-than-usual processing predicted stronger fatigue-performance coupling in the following hours, which the authors interpret as reduced capacity to override fatigue.
Limits and context
This was a secondary analysis of existing datasets, not an intervention, and participants and measures varied across studies. The associations describe short-term patterns and do not establish that fatigue or fast performance causes later difficulty, nor do they prescribe when someone should rest or push through.
This sourced news summary and translation were prepared with AI assistance. Source links, the news date and research limitations are disclosed; this is not a claim of independent medical expert review. News production method.
Sources
- Fatigue and processing speed predict subsequent fatigue override, evidence from a coordinated analysis of six EMA studies — Communications Psychology / Springer Nature ·
Research news is not medical advice or a recommendation to use a substance. Read findings in the context of the study design, participants and limitations. Editorial standards.
← All news