Before revision: Reception and development of SSP Psychiatrist Michael Rutter describe the limitations of the procedure in the following terms; 190px|Mother and child "It is by no means free of limitations (see Lamb, Thompson, Gardener, Charnov & Estes, 1984).Lamb, Thompson, Gardener, Charnov & Estes, (1984).
After revision: Reception and development of SSP Psychiatrist Michael Rutter described, relatively early in the development and use of the SSP, some limitations of the procedure in the following terms; 190px|Mother and child "It is by no means free of limitations (see Lamb, Thompson, Gardener, Charnov & Estes, 1984).Lamb, Thompson, Gardener, Charnov & Estes, (1984).