Learning theories broadly characterised as constructivist, agree on the importance to learning of the environment, but differ on what exactly it is that constitutes this importance. Accordingly, they also differ on the educational consequences to be drawn from the theoretical perspective. Cognitive constructivism …

Real sustainable development involves a drastic reduction in environmental ánd social effects compared to our present ways of satisfying our needs. A system approach is asked for, taking into account total chains for resource use and production, paying attention to cultural and socio-economic factors …

The gradual aging of western society during the twentieth century, including its causes and consequences, has become one of the dominant themes of demography and sociology. This study tries to shed more light on the recent past of older individuals emphasizing the socio-economic strategies they employed …