Human capital refers to the skills, knowledge, experience, and other attributes possessed by individuals that contribute to their productivity and economic value. It is a key concept in economics and sociology that emphasizes the importance of investing in education, training, and other forms of development to enhance the capabilities of the workforce. Research in human capital explores various factors that influence the development and utilization of these skills, as well as their impact on individual and organizational performance, economic growth, and social outcomes. This area of study is critical for understanding how investments in human resources can lead to improvements in productivity, innovation, and overall well-being in society.