The principle of client self-determination has been accorded a special place in nearly every consideration of the values underlying social casework practice. Various writers in their attempt to give the concept practical application have chosen alternative terminology, namely, client self direction, and client self-responsibility, yet the subject remains contro versial. Why should this be ? The reason seems to lie in the fact that the gulf between the theoretical definitions and their application in practice is often wide, and rife with inconsistencies. My aim is to show that the con cept has so many limitations that a serious re-examination of its position in professional social work ideology is essential. Biestek defines the principle of client self-determination as 'the practical recognition of the right and need of clients to freedom in making their own choices and decisions in the casework process'.1 One activity which he considers to be at variance with the principle is that of manipulation, by which he means the manoeuvring of the client 'to choose or decide modes of action in accordance with the caseworker's judgement in such a way that the client is unaware of the process ; or if he is aware of it, he feels moved about against his will'.2 Florence Hollis, to whose work on casework theory I shall make special reference, prefers the term 'self-direction' which, she says, denotes not the absolute independence implied by self-determination but rather 'the capa city to guide oneself through the maze of interactions that make up the pattern of life. This is the capacity that the worker seeks to enable the client to increase.' Hollis qualifies, as do most other writers, that self determination is a relative, not an absolute value: 'If the client is en dangering others or himself, it must be superseded by another, namely, the worker's responsibility to prevent suffering.'2 The basis of her view is in keeping with that of other writers and is concerned with the client's right to make his own choices. Except in extreme situations this right to self direction should not be interfered with by the caseworker.4 This emphasis on self-determination—implying the converse of a purely