Introduction.- The Revived Interest in the Problems of Income and Wealth Distribution.- Re-incorporating Distributional Issues Into the Main Body of Economic Analysis.- Aim and Contents of this Book.- The Parametric Approach to Income and Wealth Distributional Analysis.- The Idea of a Parametric Model for Income and Wealth Distributions.- Brief History of the Models for Studying Income and Wealth Distributions.- The κ-Generalized Distribution.- Underlying Stochastic Process.- Empirical Results and Comparisons to Alternative Income Distributions.- The κ-Generalized Mixture Model for the Size Distribution of Wealth.- Motivation.- Model Specification.- Moments of the κ-Generalized Mixture Model for Net Wealth Distribution.- The Lorenz Curve and the Gini Index of the Net Wealth Distribution Model.- Empirical Results and Comparison of Finite Mixture Models for Net Wealth Distribution.- Four-Parameter Extensions of the κ-Generalized Distribution.- Definitions and Basic Properties.- Population Characteristics.- Empirical Results and Comparisons to Alternative Four-Parameter Statistical Distributions.- Conclusions.- Appendices.- References.- Author Index.- Subject Index.