Content Theories:
- Maslow's Hierarchy of Needs (1943): Proposes a hierarchy of needs: physiological, safety, love and belonging, esteem, and self-actualization. Individuals are motivated to satisfy higher-level needs once lower-level needs are met.
- Herzberg's Two-Factor Theory (1959): Divides factors into "motivators" (e.g., achievement, recognition) and "hygiene factors" (e.g., salary, benefits). Motivators drive satisfaction and performance, while hygiene factors prevent dissatisfaction.
- McClelland's Achievement Theory (1961): Posits three primary needs: achievement, power, and affiliation. Individuals are motivated by specific needs based on their personality.
Process Theories:
- Expectancy Theory (Vroom, 1964): Suggests that motivation is determined by three factors: expectancy (belief in one's ability to perform), instrumentality (belief that performance will lead to desired outcomes), and valence (value of the outcomes).
- Equity Theory (Adams, 1963): Proposes that individuals strive to maintain equity in their relationships. When they perceive inequity, they will be motivated to restore balance through adjustment of input or outcome.
- Goal-Setting Theory (Locke, 1978): Suggests that specific, challenging, and attainable goals lead to higher motivation and performance.
Reinforcement Theories:
- Operant Conditioning (Skinner, 1953): Based on the idea that behavior is reinforced (increased) when followed by positive consequences or punished (decreased) when followed by negative consequences.
- Social Learning Theory (Bandura, 1977): Emphasizes the role of observation and social reinforcement in motivating behavior. Individuals learn from others and are motivated by external rewards and punishments.
Other Theories:
- Self-Determination Theory (Deci & Ryan, 2000): Proposes that intrinsic motivation is driven by a need for competence, autonomy, and relatedness.
- Cognitive Evaluation Theory (Festinger, 1957): Suggests that individuals will experience cognitive dissonance when their actions conflict with their beliefs. This dissonance motivates them to reduce the conflict by changing their beliefs or behavior.