Gilbert, P.
(1992).
Depression: the evolution of powerlessness.
"Entrapments. In some cases a person is trapped in a poor relationship that she/he cannot get tree from (feeling too guilty at leaving, or too fearful) or is trapped by economic circumstances (e.g., a single mother's dependency on parents, or inability to give up one's job because of economic responsibilities—this is more common in men than is recognised and can lead to anger at the family). This is the equivalent of blocked escape. It is associated with the idea of 'caging', being confined and limited in actual movement (especially away from an aversive situation). Helplessness does not convey the sense of being caged and trapped although at another level they are probably equivalent. Entrapments focus more on the theme of 'freedom of movement' and blocked escape. Events can occur that make one acutely aware not only of how little one can do, but also of how 'confined one is'. Fresh start events would probably reduce the sense of being trapped/caged (Brown et al., 1988)." (p.444)