Behavioral science refers to systematic analysis which includes investigation of animal and human behavior through naturalistic and controlled observation together with scientific experimentation. Operations approach uses something like a variable or object in a process to find out its quantity, duration or existence.
One definition for science is the systematic knowledge of the material or physical world gained through observation and experimentation. If you take the simplest technology, for example the wheel or a lever, it was observation of a phenomenon ( rolling for instance) that let to experimentation which turned the rolling rock into a wheel or the stick into a lever. The observation and experimentation (science)came before the actual wheel (technology).