Define or describe the third-variable problem

Reference no: EM131305276

1. In addition to the key words, you should also be able to define the following terms: third-variable problem directionality problem confounding variable random process placebo mundane realism experimental realism

2. Define or describe the third-variable problem and the directionality problem. Explain the actions used in an experiment to avoid these two problems.

Reference no: EM131305276

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