BPK 140 Chapter Notes - Chapter 2: Animal Testing, Blind Experiment, Heavy Object
10 Mar 2018
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Document Summary
We are exposed to many different health claims, but not everything that is circulated in print or by other media is true. Early pre-scienti c people tended to explain events in terms that we would now consider superstitious. Mechanistic explanations involve the cause and effect of a certain behaviour. This became more common in the 18th and 19th century. Hypothesis is a statement phrased in a way that can be tested. Scientists form hypotheses based on existing knowledge, with a good dose of logic, intuition, and educated guessing. Control group is the group that is the same as the experimental group, but they do not get exposed to the treatment. Experimental group is the group that gets the treatment/manipulation. Individual variability is another factor that must be considered in a good scienti c experiment. Placebo is something that has no effect on the variable being tested and that the subject cant tell is different from the real experimental treatment.
