Abstract Objective This study investigated current representation of diverse samples in research published in four leading neuropsychology journals. Methods We reviewed 367 articles published in 2023 from Archives of Clinical Neuropsychology, Neuropsychology, Journal of the International Neuropsychological Society, and The Clinical Neuropsychologist. 34 review articles and 4 editorial/announcements were excluded leaving 321 articles coded for age, education, gender/sex, race/ethnicity, and sample country. Results Overall, 89.41% of studies reported gender/sex and 50.46% reported race/ethnicity. Out of 63 original articles that included European populations (e.g., France, Sweden, Denmark, etc.), 93.65% reported gender/sex and 12.7% reported race/ethnicity. Out of 172 original articles that included United States (U.S.) samples, 95.93% reported gender/sex and 80.23% reported race/ethnicity. Studies of U.S. samples reported the following average sociodemographic variables: education 14.94 years (SD = 3.72), age 50.32 years (SD = 21.39), gender/sex 48.09% female and 51.90% male, and race/ethnicity was 65.11% White, 6.64% Black/African American, 2.18% Asian, 1.06% American Indian/Alaskan Native, 0.43% Native Hawaiian/Pacific Islander, and 24.57% unknown/other/mixed race. Additionally, 9.82% of participants were Hispanic/Latino. Conclusions Roughly half of studies did not report on race/ethnicity and this was particularly notable for European samples with more homogeneous populations. Studies with U.S. samples had equitable gender/sex representation but participants were predominantly White and older middle aged. Inconsistencies in how studies stratified race/ethnicity resulted in a large percentage of individuals being classified as unknown/other/mixed. This review highlights the need for more diverse representation in neuropsychological research as Hispanic/Latino, Black/African American, and Asian groups were represented at half their actual numbers in the U.S. population (18.5%, 12.2%, and 5.9% respectively).
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