Objective. Perceived cognitive dysfunction in fibromyalgia (FM), "fibrofog," is common. Prior laboratory-based studies have limited our understanding of cognitive function in FM in daily life. The objective of this study was to explore levels of subjective and objective cognitive functioning and the association between subjective and objective aspects of cognition in people with and without FM in the lived environment. Methods. Participants (n = 50 adults with FM; n = 50 adults without FM, matched for age, sex, and education) completed baseline measures of subjective and objective cognitive functioning (NIH Toolbox). They also completed ecological momentary assessments of cognitive clarity and speed, and tests of processing speed and working memory, via a smart phone app, 5 times/day for 8 days. Results. On baseline objective measures, the FM group demonstrated poorer cognitive functioning across 3 NIH Toolbox tests. There were no strong correlations between subjective and objective cognitive functioning in both the FM and control groups. In the lived environment, the FM group demonstrated poorer subjective cognition and objective working memory; groups did not differ on processing speed. Momentary ratings of subjective cognitive dysfunction were significantly related to changes in objective processing speed but not working memory, with no group differences. Conclusion. Findings indicate worse laboratory-based and ambulatory subjective and objective cognitive function for those individuals with FM compared to those without FM. Similar associations between measures of subjective and objective cognitive functioning for the groups suggest that individuals with FM are not overstating cognitive difficulties. Future research examining contributors to ambulatory fibrofog is warranted.

Objective. Perceived cognitive dysfunction in people with fibromyalgia (FM), "fibrofog," is commonly reported and has been demonstrated in neurocognitive testing. Distractibility and inattention have been implicated as potential contributors to fibrofog, but the role of environmental distractions has not been explored. In this study, ambulatory assessment methods were used to examine whether FM is related to more environmental distractions and to examine the impact of distractions on subjective and objective cognitive functioning.Methods. Fifty people with FM and 50 age-, sex-, and education-matched controls without FM completed 8 consecutive days of ambulatory assessments. Five times per day, participants reported perceived cognitive functioning and environmental distractions and completed validated tests of processing speed and working memory.Results. The FM group reported distractions in a higher proportion of the ambulatory cognitive testing sessions (40.5%) compared with the group without FM (29.8%; P < 0.001) and more often reported multiple simultaneous distractions. For both groups, sound was the most common distraction. The group with FM reported more distractions caused by light, and the group without FM reported more social distractions. Group differences in subjective and objective cognitive functioning were not augmented during distraction relative to during periods of no distraction. There were no group differences in within-person changes in cognitive functioning as a function of distraction.Conclusion. The group with FM reported more distractions than the group without FM; both groups reported poorer processing speed when distracted, and the effects of distraction on test performance did not differ significantly by group. Findings suggest that sensitivity to environmental distractions may play a role in the experience of cognitive dysfunction in FM.

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Objective: Pain acceptance is a robust predictor of adjustment to chronic pain, including pain in those with spinal cord injury (SCI). This preliminary study aimed to identify linguistic patterns indicative of chronic pain acceptance to gain new insights into the underlying cognitive-emotional process of this construct. Method: Individuals with SCI and chronic pain (N = 30) completed the Chronic Pain Acceptance Questionnaire (CPAQ) and a semistructured interview about their pain. Linguistic Inquiry and Word Count software was used to quantify linguistic categories of interest in transcribed interviews. Results: Results of hierarchical linear regressions (controlling for pain intensity, age, and education) showed that personal pronouns explained an additional 26.9% of the variance in CPAQ activity engagement, which was associated with a lower frequency of first-person plural pronouns and a higher frequency of third person pronouns. Conjunction words explained an additional 12.8% and 19.2% of the variance in CPAQ total and pain willingness scores, respectively; frequency of conjunction words was negatively associated with acceptance. Perceptual processes words accounted for an additional 39.9% of the variance in pain willingness, which was associated with a lower frequency of seeing words and a higher frequency of hearing and feeling words. Conclusions: Findings suggest that pain acceptance is associated with unique linguistic patterns that can be identified in natural word use among individuals with SCI and chronic pain. Future research to further investigate linguistic indicators of pain acceptance and other clinically relevant pain constructs is warranted and could advance theoretical models of pain adaptation and clinical approaches to treating pain. Impact and ImplicationsAlthough pain acceptance is considered a robust predictor of adjustment to pain, linguistic patterns indicative of pain acceptance have not been fully understood. Using quantitative text analysis, this study is the first to examine qualitative interview data to identify unique linguistic patterns of pain acceptance among individuals with SCI and chronic pain. The study supports the theoretical framework of pain acceptance as demonstrating less reference to the self and greater reference to others, the expression of ideas in a less interconnected way, and greater contact with, or emphasis on, sensory/perceptual experiences (hearing and feeling), regardless of pain intensity. Attention to verbal expression can reveal aspects of the underlying cognitiveemotional processes of the pain experience, which may be beneficial to pain management and treatment.