Abstract We present a systematic and qualitative review of academic literature on early conceptual development (0–24 months of age), with an emphasis on methodological aspects. The final sample of our review included 281 studies reported in 115 articles. The main aims of the article were four: first, to organise studies into sets according to methodological similarities and differences; second, to elaborate on the methodological procedures that characterise each set; third, to circumscribe the empirical indicators that different sets of studies consider as proof of the existence of concepts in early childhood; last, to identify methodological limitations and to propose possible ways to overcome them. We grouped the studies into five sets: preference and habituation experiments , category extension tasks , object sorting tasks , sequential touching tasks and object examination tasks . In the “Results” section, we review the core features of each set of studies. In the “Discussion” and “Conclusions” sections, we describe, for one thing, the most relevant methodological shortcomings. We end by arguing that a situated, semiotic and pragmatic perspective that emphasises the importance of ecological validity could open up new avenues of research to better understand the development of concepts in early childhood.

ABSTRACT: In psychology and philosophy of mind, the problem of knowledge of other minds is a field of rich disputes. Running counter to the perspectives of first- and third-person mental attribution, which assume that minds are opaque and that access to them is inferential, the second-person perspective postulates the existence of a non-representational way of knowing other minds, which is presumed to emerge within early communicative exchanges in the form of natural, basic, and direct emotional involvement. In this systematic review article, 57 philosophy or psychology manuscripts were selected with the aim of analyzing and comparing them. This study makes it possible to assess: (a) the current status of the second person perspective, (b) its main findings in developmental psychology and psychopathology, (c) the methodological discussions that stem from its assumption, and (d) a set of internal and external criticisms and questions formulated with respect to it. It is concluded that the second person perspective has a heuristic value and would be remarkably enriched if it carefully addressed the criticisms leveled against it.

RESUMEN: En psicología y filosofía de la mente el problema del conocimiento de las otras mentes es un campo de ricas disputas. Frente a las perspectivas de primera y tercera persona de la atribución mental que suponen que las mentes son opacas y que el acceso a las mismas es inferencial, la perspectiva de segunda persona postula la existencia de un modo no representacional de conocer las otras mentes, que emergería al interior de intercambios comunicativos tempranos bajo la forma de involucramientos emocionales naturales, básicos y directos. En este artículo de revisión sistemática se seleccionaron 57 manuscritos de la filosofía o la psicología con el objetivo de analizarlos y compararlos. Este trabajo permite justipreciar: (a) el estado actual de la perspectiva de segunda persona, (b) sus principales hallazgos en psicología y psicopatología del desarrollo, (c) las discusiones metodológicas que se derivan de su asunción y (d) un conjunto de críticas y cuestionamientos internos y externos formulados hacia ella. Se concluye que la perspectiva de segunda persona posee valor heurístico y se vería notablemente enriquecida si encarara la consideración cuidadosa de las críticas que la interpelan.

Resumen Este trabajo persigue dos objetivos; en primer lugar, exponer sucintamente algunas de las características de las categorías conceptuales que constituyen el núcleo duro de los enfoques socioculturales, tanto en su formulación vygotskiana (Teoría Histórico-Cultural), como en aquellas postvygotskianas. Ello permitirá sentar bases conceptuales desde las cuales encarar el segundo objetivo, a saber, analizar el texto Imaginación y creatividad en el adolescente [Pedologija podrostka (Pedagogía del Adolescente), 1931] de Lev S. Vygotski. Dicho texto resulta un caso de análisis útil tanto para ilustrar el abordaje sociocultural del autor en relación con la creatividad y su vinculación con otras funciones psicológicas al interior del desarrollo sociogenético del individuo, como su poder de creación de consciencia y control autorregulatorio.las organizaciones y la sociedad en reducir las desigualdades en el lugar de trabajo y apoyar mejores acciones preventivas.

Abstract This article has two aims. First, to expose briefly some characteristics of the key conceptual categories of sociocultural approaches, both in its Vygotskian (Historical-Cultural Theory) and post-Vygotskian interpretations. This will lay the conceptual foundations needed to address the second aim, that is, to analyse the text Imagination and Creativity in the Adolescent [Pedologija podrostka (Pedagogy of the Adolescent), 1931] by Lev S. Vygotski. This text makes up a useful case to explain the author’s sociocultural approach about creativity and its relationship with other psychological functions within the sociogenetic development of subjects, as well as its power of creation of consciousness and autoregulatory control.