What is the difference between hard science and soft science and where does psychology fit?

Hard sciences are characterized as relying on experimental, empirical, quantifiable data, relying on the scientific method, and focusing on accuracy and objectivity. Chemistry, physics, and psychology are examples of hard sciences

Soft sciences are less quantifiable and considered more subjective. The "social sciences" such as history and political science are obvious examples.

Sociology would be considered a soft science. However, psychiatry and neural science would be considered hard sciences.