According to the ecological theory of Willi 1996, people create and maintai
n their psychic wellbeing through constant shaping of their environment, i.
e. setting up a personal niche. The personal niche in turn responds to, gui
des and challenges further personal development. This study explores what k
ind of solutions single patients with psychiatric invalidity can find in or
der to form their environment as a niche in which they may develop effectiv
eness and use it for their psychic regulation. 30 people were questioned wi
th a semi-structured interview:they were patients of a psychiatric out-pati
ent's clinic, living alone and psychiatrically invalided (2/3 with schizoph
renia of the residual type). The results were ranked after their increasing
demands in a relational and in an activity inventory. The more relationshi
p is based on mutuality expectations of others, personal disclosure and bin
ding the more the subjects feel overstrained. The investigation of these in
ventories serve as a technical aid in supportive psychotherapy.