Which of the Following Is the Most Significant Challenge to Establishing

question 101

Multiple Choice

Which of the following is the most significant challenge to establishing that therapy is effective?

• A) Placebo effects commonly occur.
• B) It is impossible to assess anything in therapy.
• C) Many people improve without formal treatment.
• D) Few psychotherapies are more effective than medical treatments.

---

Definitions:

Phenotype

The set of observable characteristics or traits of an organism, resulting from the interaction of its genotype with the environment.

Color Blindness

A condition where an individual has difficulty distinguishing between certain colors, due to defects in the color-sensing pigments in the eye.

Product Rule

The rule for combining the probabilities of independent events by multiplying their individual probabilities. Compare with sum rule.

Bb Genotype

Represents a heterozygous genetic makeup, having one dominant allele (B) and one recessive allele (b) for a particular gene.