Investigation of a General Normality or Control Factor in Personality Testing

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The problem as originally posed could be stated something like this: Is there a fairly stable trait (variable, characteristic) of persons, with regard to which there exist wide individual differences, that is relatively uncorrelated with abnormal components of personality but which, if present, lessens the likelihood that a large amount of some abnormal compon ent will result in psychiatric breakdown?