pros/cons of teaching attach()
Thanks to everyone for your thoughtful replies. I think I am inclined not to use attach, but to bring it up and briefly mention some of the mistakes that are easy to make. If students already know/use attach, it will at least be clear why I do not use it, and for students unfamiliar with it, they should not be tempted to start. Thanks again for all the responses! Josh
Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/