A Researcher Wants to Compare the Effect of a New

question 68

Multiple Choice

A researcher wants to compare the effect of a new type of shampoo on hair condition. The
Researcher believes that men and women may react to the shampoo differently. Additionally, the
Researcher believes that the shampoo will react differently on hair that is dyed. The subjects are
Split into four groups: men who dye their hair; men who do not dye their hair; women who dye
Their hair; women who do not dye their hair. Subjects in each group are randomly assigned to the
New shampoo and the old shampoo. This experiment

• A) has two factors (gender and whether hair is dyed) blocked by shampoo type.
• B) has three factors (shampoo type, gender, whether hair is dyed).
• C) has two factors (shampoo type and whether hair is dyed) blocked by gender
• D) has one factor (shampoo type), blocked by gender and whether hair is dyed.
• E) is completely randomized.

---

Definitions:

Token Economy

A behavior modification system that uses tokens as a form of positive reinforcement for desired behaviors, which can later be exchanged for rewards.

Grooming Habits

Practices and activities related to personal care and cleanliness, including habits for maintaining appearance and hygiene.

Personalization

Distortion of thinking in which a person takes responsibility or blame for events that are unconnected to the person.

Overgeneralization

Distortion of thinking in which a person draws sweeping conclusions based on only one incident or event and applies those conclusions to events that are unrelated to the original; the tendency to interpret a single negative event as a never-ending pattern of defeat and failure.