Human Capital Theory posits that individuals with higher levels of education, skills, and abilities earn higher incomes due to their increased productivity.

The Kuznets Inverted U Hypothesis suggests that inequality tends to rise during the early stages of economic development but eventually declines as development progresses.

Institutional Theory argues that economic inequality is rooted in social institutions such as property rights, inheritance laws, and labor market regulations.

Marxian Theory posits that economic inequality arises from the exploitation of the working class by the capitalist class, who own the means of production.

Dependency Theory argues that economic inequality is a consequence of the unequal distribution of productive assets between developed and developing countries.

The Pareto Principle states that a small percentage of the population (the top 20%) typically controls a large share of the income (80%).

The Efficiency-Equity Trade-Off Theory posits that there is an inherent tension between economic efficiency (maximizing output) and economic equity (fair distribution of income).

Social Mobility Theory argues that economic inequality can be reduced by increasing social mobility, allowing individuals to move up the economic ladder regardless of their social background.

The Gini Coefficient is a statistical measure used to assess the level of economic inequality in a society, ranging from 0 (perfect equality) to 1 (perfect inequality).

Preference Theory posits that individuals' choices and preferences, such as their willingness to work hard or take risks, can lead to economic inequality.

The Trickle-Down Theory is criticized for assuming that economic growth automatically benefits all members of society, ignoring the role of government intervention, and failing to consider the negative environmental consequences of economic growth.

Technological Change Theory argues that economic inequality can be influenced by the introduction of new technologies that favor certain groups over others.

The Kuznets Curve is a graphical representation of the relationship between economic growth and economic inequality, showing how inequality may initially increase during early stages of development but eventually decline as development progresses.

Discrimination Theory posits that economic inequality can arise from discrimination against certain groups of individuals, leading to unequal opportunities and outcomes.