Avoidant/Restrictive Food Intake Disorder (ARFID) is defined by limited volume or variety of food intake motivated by the sensory properties of food, fear of aversive consequences, or lack of interest in food or eating associated with medical, nutritional, and psychosocial impairment. Currently, two of the most widely validated measures are The Eating Disturbances in Youth‐Questionnaire (EDY‐Q) and the Nine Item ARFID Screen (NIAS). The latter has proven valid and reliable for assessing this disorder. Objective To validate a culturally sensitive adaptation of the NIAS instrument and evaluate its psychometric properties in Mexican youths. Method The sample consisted of 800 participants aged 12—30 (M = 18.56, SD = 3.52) from Mexico City and Hidalgo public educational institutions. Results The S‐NIAS obtained a Cronbach's alpha of 0.84, adequate construct validity adjustment rates: CMIN = 1.88; GFI = 0.97; AGFI = 0.94; CFI = 0.98; RMR = 0.050; and RMSEA = 0.047. Measurement invariance by gender, age, and survey administration which show that construct is understood in the same way across both groups and despite the change from paper‐and‐pencil to online survey administration. Conclusion The psychometric properties of the Spanish Nine Item ARFID Screen (S‐NIAS) indicate that it is a valid and reliable instrument for evaluating symptoms associated with ARFID in this sample of youths. Public Significance Although there are advances in studying ARFID, their epidemiological data comes mainly from a few countries. Furthermore, these data are scarcer due to the lack of validated screening and assessment instruments available in a variety of world languages; having instruments for the evaluation of ARFID symptoms is essential because it could function as an auxiliary means for the detection and prevention of people at risk.

En la quinta versión del Manual Diagnóstico y Estadístico de los Trastornos Mentales (DSM-V) se hacen modificaciones importantes al capítulo relativo a los trastornos de la conducta alimentaria, actualmente conocidos como trastornos de la conducta alimentaria y de la ingesta de alimentos, una de las cuales es que los trastornos que se creían específicos de la infancia pueden aparecer en cualquier etapa de la vida. Por tal motivo, el objetivo del presente estudio fue identificar la ocurrencia de conductas asociadas a los trastornos de pica, rumiación y evitación/restricción de la ingesta de alimentos en adolescentes. Participaron 292 estudiantes de sexo masculino y femenino, con edad promedio de 14.58 años, que contestaron el cuestionario CuPREA. Los resultados indican que una cuarta parte de la muestra afirmó consumir sustancias no comestibles, muy pocos admitieron regurgitar, y otra cuarta parte dijo que evitaban alimentos por sus características organolépticas. En conclusión, se puede afirmar que en la adolescencia aparecen conductas relacionadas a los trastornos señalados, por lo que se abre una importante línea de investigación para caracterizar dichos trastornos en los adolescentes.

Karla Medina-Tepal) GRANT SPONSOR: PAPIIT-IN306518 Conflicto de intereses: Los autores declaran no tener conflicto de intereses. ResumenEl Trastorno de evitación/restricción de la ingesta de alimentos (TERIA) tiene una presentación clínica compleja. Desde su reconocimiento en el DSM-5 se han realizado investigaciones que aportan datos de esta condición, sin embargo, su tratamiento se ha reportado mayormente en estudios de casos. Por tanto, el objetivo del presente estudio fue analizar las características e intervenciones clínicas de estudios y series de casos del TERIA, a partir de una revisión de la literatura con base a los lineamientos PRISMA y CARE. En total se examinaron 41 artículos, la mayoría de los casos reportados fueron en hombres (53.85%) con edades entre 10 a 13 (29.23%), aunque, 15.38% de los casos tenían un rango de edad de 20 a 56 años. En cuanto a sus síntomas, el más frecuente fue el bajo peso (66.15%), sin embargo, 3.08% de estos pacientes presentaba sobrepeso ligado al consumo de carbohidratos. Las comorbilidades psiquiátricas más frecuentes fueron los trastornos de ansiedad (38.46%). Por último,

Construction and validation of the Pica and Rumination Questionnaire in Mexican adolescents and young adults. Research on Pica and Rumination Disorders has focused on children, people with disabilities, and pregnant women. This has important implications because it is unknown whether these occur at other stages of development and in other populations. These conditions leads to important health problems and can even lead to death, so it is essential to have valid and reliable screening instruments. Therefore, the objective of this study was to develop an instrument to detect the symptoms and behaviors of Pica and Rumination disorders, as well as to determine their psychometric properties in Mexican adolescents and young adults. The items were prepared from the review of the literature and were subsequently submitted for review by seven experts in the area, obtaining Aiken’s V coefficients that indicate a high agreement between judges regarding the content of the instrument. Likewise, the reliability of the scale was verified from the calculation of the alpha and omega coefficients, where the following indices were obtained: 0.85 and 0.93. Subsequently, an Exploratory and Confirmatory Factor Analysis was carried out, where a structure of four factors was achieved that explains 48.35% of the variance, in addition to the following indices that corroborate an adequate fit CMIN = 2.41, GFI = 0.92; AGFI = 0.89; CFI = 0.93; RMR =.063 and RMSEA = 0.064. Finally, the calibration of the reagents was carried out where it was observed that all discriminated adequately. In conclusion, the psychometric properties obtained in this study show that the Pica and Rumination Questionnaire is valid and reliable.