Psychology is just common sense.
Or, at least some prominent figures think so. Popular radio talk show host Dennis Prager says, “Use your common sense. Whenever you hear the words ‘studies show’ — outside of the natural sciences — and you find that these studies show the opposite of what common sense suggests, be very skeptical. I do not recall ever coming across a valid study that contravened common sense” (Lilienfeld et al., 2010, p.5).
It appears that Prager has not read many scientific studies.
For centuries scientists, science writers and philosophers have encouraged us to trust our common sense (Lilienfeld et al., 2010; Furnham, 1996). Common sense is a phrase that generally implies something everyone knows. One of the definitions of common sense given by Wikipedia is, “good sense and sound judgment in practical matters.”