A Researcher Conducted an Experiment to Test a New Cognitive

question 52

Multiple Choice

A researcher conducted an experiment to test a new cognitive therapy for post-traumatic stress disorder.After 6 months of administering the therapy with his clients,the researcher found that 75 percent of his clients got better.He proclaimed the new therapy successful.What was wrong with this study?

• A) There was no dependent variable.
• B) There was no placebo group.
• C) He did not use a representative sample.
• D) Six months is too short a time to evaluate the effectiveness of therapy.

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Definitions:

HCl

Hydrogen chloride, a diatomic molecule consisting of a hydrogen and a chlorine atom, known for its role as a strong acid when dissolved in water.

Alcohols

Organic compounds characterized by one or more hydroxyl (-OH) groups attached to a saturated carbon atom.

HBr

Hydrogen bromide, a diatomic molecule consisting of hydrogen and bromine, used as a reagent in many chemical reactions.

Synthetic Steps

The individual chemical reactions and procedures performed in sequence to synthesize a desired compound from simpler starting materials.