A Teaching Assistant (TA) earns an average salary of $21,548 per year. A skill in Childhood Education is associated with high pay for this job.
Medical Definition of place theory. : a theory in physiology: the perception of pitch results from the ability of sounds of different pitch to stimulate different areas of the organ of Cortiâcompare telephone theory.
Trichromatic Theory of Color Vision. The trichromatic theory of color vision is based on the premise that there are three classes of cone receptors subserving color vision. This theory has a very long history dating back to the 18th century.