Why Is It Sometimes Important for an Experiment to Use

question 66

Multiple Choice

Why is it sometimes important for an experiment to use a blind observer?​

• A)To minimize the effect of experimenter bias
• B)​To avoid the need for informed consent
• C)​To combine the results of the experiment with a correlational study
• D)​To minimize the effect of an independent variable

---

Definitions:

Colored Gapes

Visual cues, often bright colors inside the mouths of bird fledglings, that stimulate feeding behavior by parent birds.

Facultative Siblicide

The conditional behavior in which an individual, usually a sibling, is killed based on environmental conditions or resource availability.

Natural Gape Coloring

The innate coloration found inside the mouths of young birds and other animals, often used to stimulate feeding by the parents.

Signal Of Quality Hypothesis

A theory suggesting that certain traits or behaviors serve as signals to potential mates that an individual possesses high genetic quality.