Bernadette, a Participant in a Longitudinal Study, Became Quite Familiar

question 49

Multiple Choice

Bernadette, a participant in a longitudinal study, became quite familiar with the test over time and, as a result, her performance improved. This limitation of longitudinal research is known as

• A) biased sampling.
• B) practice effects.
• C) random assignment.
• D) cohort effects.

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Definitions:

Electrons

Subatomic particles with a negative charge, orbiting the nucleus of atoms and playing a key role in chemical reactions and electricity.

Proton Acceptor

A chemical entity that receives protons (hydrogen ions) in a chemical reaction, often measured in the context of acid-base chemistry.

Covalent Bond

The chemical bond involving shared pairs of electrons; may be single, double, or triple (with one, two, or three shared pairs of electrons, respectively). Compare with ionic bond and hydrogen bond.

OH− Concentration

A measure of the number of hydroxide ions in a solution, influencing its acidity or basicity.