The document discusses several definitions of human resource development (HRD) from different authors between 1981 to 2000. Jones (1981) defines HRD as the systematic expansion of people's work abilities focused on organizational and personal goals. McLagan (1989) sees HRD as the integrated use of training, development, and organizational development to improve individual and organizational effectiveness. Nadler and Nadler (1989) define HRD as organized learning experiences provided to employees to improve performance and growth.