In the Experimental Studies of Bystander Non-Intervention, Researchers Have

question 27

Multiple Choice

In the experimental studies of bystander non-intervention, researchers have

• A) always first obtained the participant's informed consent.
• B) been careful to debrief their laboratory participants.
• C) subsequently found that most research participants believe the laboratory experiments have little, if any, application to everyday life.
• D) All of these choices

---

Definitions:

Directional Selection

A mode of natural selection where an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time.

Selection Differential

The difference in a particular trait between the selected individuals for breeding and the general population, driving evolutionary changes.

Narrow Sense Heritability

The proportion of phenotypic variance that can be attributed to additive genetic variance, important in the prediction of response to selection.

Body Height

A measurement of an individual from the bottom of the feet to the top of the head when standing upright.