So this effect must have existed all along; she just hadn't paused to realize its significance.

Experimental evidence to date indicates that no such effect exists.

The effect exists, but I think a different reason is more important.

These effects may exist if recall errors are due to serial position.

The mere-exposure effect exists in most areas of human decision making.

Cause and effect, as I could see for myself, just don't exist.

In the flow of time, the effect (you) would exist before the cause (your birth).

The point is: these effects exist; science is the process by which we try to understand them.

Once they came to a place where a whispering-gallery effect existed.

When the cause is destroyed, the effect will no longer exist.