Expert estimation of the work style of leaders based on 16 scales make it possible to reveal some typological differences between them. Structural patterns of the corresponding data in efficient leaders differ from those in less efficient ones. A "differential standard" to be used for practical psychodiagnostics of efficient leaders is suggested. The data obtained in practical approbation of it have been supported by results of application to the same leaders of other procedures which were earlier suggested by the author: a procedure for self-analysis of the individual style of activity, and a procedure for self-analysis of difficulties in entering into the leader's position.