Examining the "reading the mind in the eyes test" as an assessment of subtle differences in affective theory of mind after concussion.

This research examined affective theory of mind (ToM) differences between university students with and without a history of concussion using the revised Reading the Mind in the Eyes Test (RMET). Although, previous studies have shown that affective ToM is subserved by the ventromedial prefrontal cortex - a region that is vulnerable in head injury - few have examined whether subtle deficits in affective ToM are evident after concussion. Given the RMET's sensitivity to affective deficits following moderate-to-severe traumatic brain injury, the current study examined its validity following concussion and its correlation with related ToM measures and constructs, such as empathy. Seventy-seven students with and without a history of self-reported concussion completed the RMET, the Interpersonal Reactivity Index, a novel Perspective-Taking Task, and the Questionnaire of Cognitive and Affective Empathy. Indices of spelling/reading capabilities were obtained and baseline electrodermal activation was recorded as an index of arousal. RMET performance did not differ between individuals with and without a prior concussion when controlling for sex and spelling/reading skills and was not correlated with other measures of affective ToM, empathy, and arousal. However, spelling/reading skills were found to be a predictor of RMET performance among both concussion and no-concussion groups. Together, these findings imply that the RMET is not sensitive to ToM impairments after concussion and may be related to language skills among neurotypical students.