The study aims to shed light on whether mentoring may help protégés decrease their perception of job content plateaus. Based on the conservation of resources theory, career mentoring could be an effective resource in decreasing job content plateaus and alleviating the resulting emotional exhaustion. The study also proposes that perceived organizational support (POS) can be an organizational resource for protégés, strengthening the effects of career mentoring in addressing the problem of job content plateaus and ensuing emotional exhaustion (via job content plateaus). Two-wave data were collected from a sample of 353 protégés in Germany. Results showed that career mentoring was negatively related to emotional exhaustion through job content plateaus. Moreover, high POS strengthened the effects of career mentoring, directly in dealing with the issue of job content plateaus and indirectly for emotional exhaustion. Important theoretical and practical implications for mentoring and career plateau research are discussed.

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T h e history of the discovery of the super-factor in factorial analysis dates back to 1931 when Moore worked on isolating the natural syndromes of mental diseases (3). Moore was then interested in the group factors only and denied the universality of "9." H e also derived a regression formula for correlating the group factors. Thurstone paid more attention to the independent factors in the early days of the development of his factorial techniques but mentioned the importance of the possibly correlated factors in his Vectors of the Mind in 1935 (5). Later on Thurstone derived a formula in matrix notation for finding the cosines of the angular separations between the primary vectors. Holzinger and Harman ( 1 ) published a generalized formula for either correlated or uncorrelated factors in expended form in 1937 and Tucker (6) formulated a generalized formula in matrix notation in 1940. Thurstone named the super-factor as a secondorder factor. It is now a n important part of factorial analysis to find out the orthogonality of the group factors in order to ascertain whether or not they are correlated. If they are correlated it is very possible to extract a super-factor after the intercorrelations of the group factors are further analyzed. If so, it seems sometime to be more economical to describe the variables in terms of the super-factor than in terms of a set of group factors.T h u s the question raised: H o w is the variable saturated with the superfactor? T h e present problem is a n attempt a t giving a very simple method to calculate the correlation between a variable in the battery and its superfactor based on a certain assumption. L e t us assume that the correlation between variable u and super-factor or rap,, can be accounted for only by the existence of the group factor g. I n other words w e may find such a correlation by assuming the presence of the group factor as the sole factor that is responsible for any observed correlation between the variable u and the super-factor. If we equate the partial correlation to zero and partial out 'Received in the Editorial Office on May 15, 1946, and published immediately at 'The writer is grateful to his mother, Mrs. Tberese Hsii, whose aid made the Provincetown, Massachusetts. publication of this note possible.