La presente investigación tuvo por objetivo analizar la relación entre el capital psíquico y el bienestar psicológico, entendidos como variables subjetivas que caracterizan al denominado envejecimiento exitoso. A su vez, se estudió su relación con la plasticidad cognitiva, considerada como medida objetiva del rendimiento cognitivo en dicha etapa vital. El estudio fue realizado en una muestra de 56 adultos mayores cognitivamente sanos de ambos sexos, entre 60 y 92 años, pertenecientes a CABA y GBA. Como resultados, se hallaron correlaciones positivas entre las dimensiones Cognitiva y Cívica del capital psíquico y ciertas dimensiones del bienestar psicológico; demostrando la relación existente entre ambos constructos. Respecto a la plasticidad cognitiva, se encontraron relaciones con las dimensiones del capital psíquico y del bienestar psicológico. Palabras clave Desarrollo evolutivo - Capital psíquico - Bienestar psicológico - Plasticidad cognitiva ABSTRACT ASSESSMENT OF PSYCHIC CAPITAL, PSYCHOLOGICAL WELLBEING AND COGNITIVE PLASTICITY IN OLDER ADULTS The aim of this study was to study the relationship between psychic capital and psychological well-being, understood as subjective variables that characterize the so-called successful aging. In turn, its relationship with cognitive plasticity, considered as an objective measure of cognitive performance at this vital stage, was studied. The study was carried out on a sample of 56 cognitively healthy older adults of both sexes, between 60 and 92 years old, belonging to CABA and GBA. As results, positive correlations were found between the Cognitive and Civic dimensions of psychic capital and certain dimensions of psychological well-being; demonstrating the relationship between both constructs. Regarding cognitive plasticity, relationships were found with the dimensions of psychic capital and psychological well-being. Keywords Evolutive development - Psychic capital - Psychological well-