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El objetivo del estudio ha sido establecer la relación entre el cronotipo, el jet lag social y el rendimiento académico de adolescentes entre catorce y dieciséis años que cursaban el cuarto o el quinto grados de educación secundaria en un colegio particular de Lima, Perú. Así mismo, se buscó comparar dicha relación con las asignaturas de matemática y lenguaje, así como con el sexo de los participantes. Se aplicó a 129 alumnos (68 mujeres, 61 hombres) la Escala de Matutinidad/Vespertinidad para niños y adolescentes (MESC) y una encuesta de jet lag social. Los resultados, basados en regresiones múltiples, muestran que, en una ciudad como Lima, Perú, cercana a la línea ecuatorial, tender a la matutinidad está relacionado con experimentar menos jet lag social y dicha relación no depende del sexo, lo que confirma que las diferencias en matutinidad/vespertinidad según el sex...

The study aimed to analyze the psychometric properties of validity and reliability of “Escala de Adherencia Terapéutica basada en comportamientos explícitos” in patients with kidney disease. Method: The research was instrumental, with a sample of 245 patients with kidney disease, between men and women, whose ages ranged from 16 to 65 years. Results: The reliability obtained through the alpha, ordinal and omega coefficient, values greater than .70 considered acceptable. In addition, a confirmatory factorial analysis was performed where adequate fit indices were found for an oblique three-factor model with 13 items (X2 =158.432, gl=62, CFI=.955, TLI=.943, SMRM=.075, RMSEA =.080 and WRMR=1.007). Conclusions: The instrument presents evidence of validity and reliability based on the structure of the construct for the study sample.

The study aims to analyze the psychometric properties of the CASO-A30 Social Anxiety Test by Caballo, Salazar, Irurtia, Arias and the CISO-A Research Team in Peruvian university students. From the sample made up of 350 students from a university in Lima through simple random sampling, with a significance level of 0.05 and a population made up of 1185 students, of both sexes, in 2018 II. Made up of 257 women and 93 men, aged between 18 and 33 years.When evaluating the reliability of the social anxiety questionnaire for adults, a Crobach's Alpha of 0.94 was obtained and ordinal Alpha of 0.95, finding a very high internal consistency (95%), additionally a confirmatory factor analysis of Social Anxiety was performed using the Free Scale Least Squares estimation method, obtaining a GFI of 0.98, AGFI 0.97, NFI 0.97, RFI 0.97 and RMSR 0.08. , confirming that the internal structure presents five...