Diurnal and Nocturnal Personalities in Developmental Psychology

In the first decades of the XXth century a distinction beteen diurnal and nocturnal personalities was introduced, whihc is important on both pathological and non pathological areas. This distinction has both psychological and biological characteristics. Studies have been published with particuar reference to children, Adolescents, Adults and Olders wiht reference to the two personality typologies. Our research is an overvie about the topic with specific reference to different developmental range ages, behaviour and consequencences - either pathological of non pathological - which the to personality dispositions can involve