Two weeks ago, this column discussed how corporate managers can use criticism to maximize their employees' performance. But what about improving the boss's own performance? Is there any way of predicting which leadership styles are likely to be most effective, and which ones ineffective? There is,...

In spite of social and economic upheaval, the 1900's prospered as a whole. The 1920's were marked by technological, historical, literary, and political, phenomena. Society was experiencing a new way of life, characterized by new technology that enabled Americans to kick back and enjoy a...