I had an interesting discussion about the rigor of undergrad psych education in one of my social work classes (double major). A couple of the students were talking about how people always think a social work major is just fluff, when parts of it (see practicum) can actually be quite challenging. One of the students, another psych double major, said, "Yeah, psych is a joke major." My immediate response? "Not if you do it right." Her response: "Well, unless you're [futureapp], anyway." (I'm well-known among my social work cohort as the "research one.")
I think the problem with psych is not that it lacks rigor, per se, but that students (and faculty,to some extent) don't treat it correctly. Lots of psych students run from research and stats and thinks that's just a minor, albeit "painful," part of the major. Students here who take advanced research methods and put in a semester or two in a lab are considered to have a "research emphasis," which I think is a bit sad, actually. Not that that's not good experience, but it's just a start, and students need to see that.
I've made my undergrad experience rather research heavy (multiple labs, multiple theses, PI'd project, a peer-reviewed publication, etc), and I have hard time even thinking of that as a "research emphasis." There's so much more I could--and want--to do and learn in research, and I feel that I've honestly just touched the tip of iceberg. How students could think that they "know research" with just a semester in a lab or a methods class or two honestly boggles my mind.
I'm not saying every psych undergrad needs to be published or anything like that, but it just seems to me that undergrad psych is NOT taught in a way that gets students to truly know or appreciate research and what an important part of the field this is. I think the faculty here is good and that we get an excellent grounding in theory and some minor practical things, but I wish psych was taught and viewed more as the research-heavy field it is.
I think psych *can* be a rigourous major--I certainly consider my experience to have had rigor, though only the smallest fraction of what grad school probably has--but that it's not taught or viewed in the right way. Research needs to emphasized more from the beginning; psych is wonderful, rigourous science, and it's a shame that most undergrads aren't being trained to see it that way.
Just my $.02.