Between the Administration of a Pretest and a Posttest, an Event

question 1

Multiple Choice

Between the administration of a pretest and a posttest, an event may occur that can affect the results of the study independent of the treatment program being evaluated. This threat to internal validity is called

• A)history
• B)regression
• C)testing
• D)maturation

---

Definitions:

Top Land

In an engine, the top land represents the highest section of the piston between the piston ring and the crown, impacting compression and efficiency.

Backlash

The play or gap between meshing gears, allowing for necessary movement without binding in mechanical systems.

Tooth Contact Pattern

Refers to the alignment and engagement between gear teeth, impacting the efficiency and noise level of the gear operation.