In an Experiment, Participants Are Usually Assigned to Treatments Using

question 30

Multiple Choice

In an experiment, participants are usually assigned to treatments using random assignment. The reason for using random assignment is ____.

• A) to allow the experimenter to manipulate participant variables
• B) to allow the experimenter to manipulate environmental variables
• C) to help control extraneous variables
• D) to increase the reliability of the outcome measures

---

Definitions:

Maladaptive Trait

A trait or behavior that was once advantageous but has become counterproductive to an individual's well-being or survival in the current environment.

Gene Pool

The complete set of genetic information within all the individuals of a population, species, or group.

Disk Pecking

A behavior observed in birds, such as chickens, where they peck at small disks or spots, often used in studies of animal learning and cognition.

Innate Releasing Mechanisms

Built-in neural and physiological systems in animals that trigger specific responses to particular stimuli, facilitating instinctual behavior.