Endogenous Change Occurs When ______

question 64

Multiple Choice

Endogenous change occurs when ______.

• A) the groups can differ over time because of differential attrition
• B) natural developments in the subjects, independent of the experimental treatment, account for some or all of the observed change
• C) subjects who are chosen for a study because of their extreme scores on the dependent variable become less extreme on the posttest due
• D) something other than the treatment influences outcome scores

---

Definitions:

Scaffolding Proteins

Nonhistone proteins that help maintain the structure of a chromosome.

Pericentriolar Material

Fibrils surrounding the centrioles in the microtubule-organizing centers in cells of animals and other organisms having centrioles.

Fibrils

Thin, elongated threads found in cells, often made of proteins, contributing to the structure and function of cells.

Centrioles

Cylindrical cell structure that is involved in the process of cell division and in the formation of spindle fibers that separate chromosomes during cell division.