Sociocultural psychology addresses ageing as part of development in the lifecourse, examining both the continuity of processes involved, and the specificity of what develops with age. Hence, on the one hand, it is fruitful to examine older person’s socially and materially situated daily activities, as well the transitions they experience—as in any other age. However, on the other hand, older persons have lived more of these experiences, and also have seen historical transformations; this may lead to specific forms of psychological development. The literature has highlighted the importance of reminiscing in older age, and of reinterpreting one’s past, in narratives or in psychotherapy. Our semiotic approach suggests that some reorganisations of knowledge and skills, specific to older age, may also take place. Drawing on a longitudinal qualitative approach including repeated interviews with older persons, I will present three modes of reorganising knowledge: focusing on vital experiences, reorganising experiences along thematic engagements, and emerging dynamic patterns. This may suggest that beyond the reality of physical ageing, psychological development may take various forms in older age.