how to return results of disagreement

[Brent Morgan]

Hello-
I have a database in which scientists give multiple ratings of different subjects on different days. Each subject is rated by two scientists, to assess their agreement. I am interested in selecting the rows in which they disagree.

The concise version of my table is set up thusly:

Subject_id (int)
Scientist (varchar(20))
day (smallint)
rating1 (smallint)
rating2 (smallint)
rating3 (smallint)
primary key (subject_id, scientist)

so I am looking for an sql statement that will show the subject_ids where the two scientists disagree on any of the three ratings (keeping in mind that they must be rating the same day).

Thanks!