For Quasi-Experiments

question 1

Multiple Choice

For quasi-experiments,

• A)there is a particularly important potential threat to internal validity, namely whether the "as if" randomization in fact can be treated reliably as true randomization.
• B)there are the same threats to internal validity as for true randomized controlled experiments, without modifications.
• C)there is little threat to external validity, since the populations are typically already different.
• D)OLS estimation should not be used.

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Definitions:

Osteochondral Canals

Osteochondral canals are channels within bone and cartilage that allow for the passage of blood vessels and nerves.

Canaliculi

Small, narrow channels within the bone structure that allow for communication and nutrient/waste exchange between osteocytes.

Spongy Bone

A type of bone tissue characterized by a porous architecture, found at the ends of long bones, providing structural support and flexibility.

Compact Bone

Dense, hard layers of bone tissue that lie underneath the periosteum and provide strength and structure to bones.