The document discusses several theories of motivation, including: 1. Abraham Maslow's hierarchy of needs theory which states that as lower level needs are met, higher level needs emerge. 2. Herzberg's two-factor theory that associates intrinsic factors with job satisfaction and extrinsic factors with dissatisfaction. 3. McClelland's theory of needs which proposes that achievement, power, and affiliation are important motivating needs. Contemporary theories discussed include self-determination theory concerning intrinsic vs extrinsic motivation, goal-setting theory about specific and difficult goals leading to higher performance, and expectancy theory relating expectations of outcomes to motivation.