causal connection , also: causal link , also: causal nexus

There is also a causal connection between the two processes.

Studies have found no causal connection between the vaccines and autism.

This would allow a "causal connection" between the symbols and things they represent.

None of these causal connections have been proved, and all are under active investigation.

"I don't think that anyone has proven a causal connection between the pornography and the violence."

A simple confusion of a temporal event with a causal connection.

The action of the board or public body breaks the causal connection.

Simply because two things happen at the same time does not mean there is any causal connection.

But no one knows whether there is a real causal connection.

There may be a causal connection between a reference and a referent.