• Public Interest Theory: This theory posits that administrative agencies exist to serve the public interest. It emphasizes the importance of agencies acting fairly, efficiently, and transparently in fulfilling their public duties.
• Capture Theory: This theory suggests that administrative agencies, over time, can become overly influenced by the industries they are supposed to regulate. This can lead to decisions that benefit the regulated industries more than the public.
• Public Choice Theory: This theory draws on economics to understand how agencies make decisions. It suggests that agency officials are motivated by self-interest, and their decisions may be influenced by factors like political pressure and the desire to maximize their own power and resources.

These theories provide different perspectives on how administrative agencies should function and how their actions should be evaluated.