Epstein (1965) presented observers photographs of a quarter, dime, and half-dollar that were all equal in physical size. his results showed that a. ? familiar size is most effective when other information about depth is absent b. ? the quarter was judged to be closer than the dime, when viewed monocularly c. ? accommodation is a stronger cue than any pictorial depth cue d. ? familiar size is most effective when the observer has both eyes open

Epstein (1965) presented observers that photographs of a quarter, dime, and half-dollar were all equal in physical size. The photographs were at the same distance from the observers. Using only one eye the observer said that the dime was closest, the quarter was farther than the dime, and the half dollar was farthest of them all. Using two eyes this was not the result, because they were aware of the distance. So, this Epstein's results showed that familiar size is most effective when other information about depth is absent.

Where are they though?

All of them are man made