SINCE v. BECAUSE
This is one of my pet peeves ever since I decided to start noticing it. I just saw it again in a brief, so let’s review:
According to the 6th edition of the APA Publication Manual (p. 84), the use of since is more precise when it is used to refer only to time (to mean “after”). You should replace it with because when that is what is really meant. Examples of both terms being used correctly are listed below:
Since he went to jail, Robert has been developing an interest in soap carving.
Robert went to jail because he could not meet the elements of the insanity defense.
And there you have it!