
I've done sensory evaluation tests before, whether it be tasting salsa or pizza, and evaluating several aspects from taste to texture to smell to hotness. I've even done olfactory testing on, ahem, poop smell? I know it sounds weird, but in this study they were trying to figure out the concentration of pig barn smell that could be in the air before it was detectable to the human nose... so I'm assuming I was smelling pig poo air, or more likely a component of it. ANYWAYS, the point being that these sensory types of tests are very common in research, I'm just not sure about actually tasting people. I'm sure it's done outside of the research setting all the time, hehe (as well as the olfactory thing, I know I've been forced to smell things against my will, which is completely unethical btw).
Anyways, I digress. In designing the study, there are so many things to consider. For instance, there's something called the contrast effect... meaning if you taste something really good and then taste something average, the average thing tastes worse. Whereas if you taste something awful and then something average, the average thing tastes awesome. So designing the study to be blinded and randomized, etc, would be quite the task. Hmm, there would be so many confounders, let alone difficulties with ethics and recruitment, that I'm sure it will never be done.
In my speculation, tastes are variable and a matter of perception, but I actually wouldn't doubt that vegetarians taste better. As a rule, they are more health conscious, and I could imagine that a healthy person would be tastier than a greasy hamburger eatin' fatso. Now, would this be because a person who tends to be health conscious is also more aware of their hygeine? Perhaps. Although if granola-type people are healthier, uh, they definitely DON'T smell like it. Also, one thing I'm not sure of, is how long does it take for the digestive tract of a person converting to vegetarianism to adjust to the higher fibre diet? This could pose a smelly conundrum. Geez, this gets more complicated the more I think about it!
Anyways, I won't be writing the grant on that one... I think I'll stick to studying what goes into the body, rather than whatever comes out.
