In a Study Described in Chapter 1, Psychologist Paul Solomon

question 373

Multiple Choice

In a study described in Chapter 1, psychologist Paul Solomon and his colleagues investigated the effects of the herb gingko biloba on memory, concentration, and other mental tasks. All participants in the study took a battery of tests at the beginning and end of the six-week study. The results showed that:

• A) test scores increased about the same for the participants in the experimental group and for the participants in the placebo control group.
• B) test scores actually decreased for the participants in the experimental group and increased slightly for the participants in the no-treatment control group.
• C) test scores were virtually identical both times the participants were tested.
• D) although test scores stayed about the same, participants in the study subjectively rated their memory and concentration as being significantly improved.

---

Definitions:

Medication

substances used to diagnose, treat, cure, or prevent disease and alleviate symptoms.

Milligrams

A unit of mass or weight in the metric system, equal to one thousandth of a gram, commonly used to measure small quantities of material.

Grams

A unit of mass in the metric system, equal to one-thousandth of a kilogram.

Tablespoon

A unit of measure used in cooking, equal to approximately 15 milliliters or half an ounce.