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Background: A growing literature base supports the use of tests developed in high‐income countries to assess children in low resource settings when carefully translated, adapted, and applied. Evaluation of psychometric properties of adapted and translated measures within populations is necessary. The current project sought to evaluate the reliability and validity of an adapted and translated version of the Mullen Scales of Early Learning (AT‐MSEL) in rural Guatelama. Methods: The reliability and validity of the AT‐MSEL in rural Guatemala were analyzed for children ages 0–5 years. Results: Interrater reliability coefficients (ICC = 0.99–1.0) and internal consistency (Cronbach's alpha = 0.91–0.93) were excellent for all subscales. General linear models utilizing paired data showed consistency between standard scores (p < 0.0001). Mean raw scores increased with chronological age, as expected. Across age groups, subscales were significantly, positively correlated with one another (p < 0.05 ‐ < 0.001) with one exception, visual reception and expressive language at the 0–10 month age range (p = 0.43). Conclusions: The AT‐ MSEL showed strong psychometric properties in a sample of young children in rural Guatemala. Findings demonstrate that the AT‐MSEL can be used validly and reliably within this specific population of children. This work supports the concept that tests developed in high‐income countries can be used to assess children in low resource settings when carefully translated, adapted and applied. [ABSTRACT FROM AUTHOR]

Background: Children in low‐ and lower middle income countries (LMICs) often have poorer language skills compared with children from high‐income countries. Limited availability of culturally and linguistically appropriate assessment measures in LMICs, especially for young children, can hinder early identification and prevention efforts. Here, we describe receptive language (RL) skills among young children in rural Guatemala and report on the validity of a translated and culturally adapted developmental measure of RL. Methods: Children (n = 157; m = 53.6 months, range = 42–68 months) enrolled in a prospective cohort study of postnatally acquired Zika virus infection were administered the Test de Vocabulario en Imagenes Peabody (TVIP) and the RL scale from a translated and adapted version of the Mullen Scales of Early Learning (MSEL). Performance on the TVIP was compared with the Latin American normative sample. Correlational analysis examined the relationship between performance on the TVIP and the MSEL‐RL. Results: Mean scores were significantly below the normative sample mean on the TVIP, t(126) = −11.04, p < .001; d = 1.00. Performance on the TVIP among children who passed the practice items (n = 127) was significantly positively associated with performance on the MSEL‐RL (r = .50, p < .001), but not significantly associated with age or gender. Older age (p < .0001) and female gender (p = .018) were associated with passing the TVIP practice items. Conclusions: Delays in RL vocabulary were identified among young children in rural Guatemala on the TVIP. The association between scores on the TVIP and the RL scale of the MSEL provides preliminary support for the construct validity of this translated and adapted version of the MSEL. [ABSTRACT FROM AUTHOR]