La concepción tradicional del placebo considera este fenómeno como un procedimiento inespecífico para el problema que está siendo tratado (generalmente se refiere a intervenciones médicas o psicológicas). Se supone que el mecanismo de acción es psicológico: sugestión, expectativas, credibilidad, variables del terapeuta, condicionamiento, etc. No obstante, tales variables no son inocuas ni inespecíficas en psicología.
En este trabajo exponemos nuestra concepción del placebo y aportamos apoyo experimental a las predicciones de este modelo teórico.
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