In
philosophy, the theory of
materialism holds that the only thing that
exists is
matter; that all things are composed of
material and all phenomena (including
consciousness) are the result of material interactions. In other words, matter is the only
substance. As a theory, materialism is a form of
physicalism and belongs to the class of
monist ontology. As such, it is different from ontological theories based on
dualism or
pluralism. For singular explanations of the phenomenal reality, materialism would be in contrast to
idealism,
neutral monism and
spiritualism.
source:
Wiki
As most of you know, I am definitely not a materialist.
Further, while it may have provided some scientific benefit in the past, I believe it's a school of thought that has outlived its usefulness.
To kick off the debate, how do materialists explain the placebo effect? If consciousness is simply an emergent property of matter, how can it influence matter?
I'll just parrot Penumbra's post
#20 for my opinion of materialism. Broadly speaking my understanding of
reductive materialism simply states that all phenomena are physical; everything, including consciousness, is the product of atoms, molecules, energy, particles, etc. The "mind" is an intertheoretic reduction: mental states are synonymous with physical brain states like water is identical to H2O as sound is essentially compression waves passing through a medium. I don't see how the placebo effect is invalidated by reductive materialism or that the existence of a placebo effect contradicts materialism.
I not only think that materialism
hasn't outlived its usefulness, I see
dualism in all of its variations as a sort of
geist of the gaps. Neuro-scientists have minimized the necessity for any special category for consciousness; the attempts of dualists to fill the admittedly vast unanswered questions of the mind with Cartesian-type theories have been made progressively irrelevant as once seemingly unanswerable aspects of the brain have been answered.
I know the thread isn't about the placebo effect but it's commonly brought up in mind/body debates so I'll expound on it. The problem is that I have serious doubts the placebo effect really exists.
The first issue is that placebo effect is often misinterpreted: it's
not just a sugar pill or false treatment to induce a positive health effect, it's not a specific impact or a certain state of "mind" that's influencing or healing the physical body. The term placebo is used to explain
all manner of applied effects in a study, that is, the placebo effect is a misnomer because it's "
not a single effect but the net result of many possible factors." Factors that prop up the non-influential placebo effect may include researcher bias, the subjects' desire to please the researchers-subjects who volunteer tend to actively pursue a healthier lifestyle- as well as other forms of treatment besides the one being tested. There is simply little empirical evidence that a "mind" can speed up healing. Well conducted clinical trials are coming up empty handed with the validity of any placebo effect and those
that do report an effect are reporting a minimal one at best; the majority of purported placebo induced health improvements are due to researcher and patient bias:
People engaged in clinical trials tend to expect something to occur so they notice and report an improvement (that is feeling better or an alleviation in symptoms) with greater frequency and with more conviction. People who are sick assume the drug or placebo they're receiving will make them feel better so when they do improve they attribute it to the treatment. But if they do not improve or if they get worse they tend to minimize the failure of the placebo and shrug it off as just a bad day. But health is variable, health is often random and ups and downs are perfectly normal and may have nothing to do with the placebo. It's
selection bias that inflates the frequency of the alleged placebo effect.
Another recent comprehensive study concluded that:
As the evidence accumulates and studies become better controlled it looks more an more like the placebo effect is false and using it as evidence of any form of mind-body connection, much less any form of Cartesian dualism, is simply unwarranted.