Professor Sandis Is Interested in the Development of Cognitive Abilities

question 177

Multiple Choice

Professor Sandis is interested in the development of cognitive abilities. So he designs a research study using a cross-sectional design. When interpreting the study, he needs to remember that the results may be biased because

• A) this design does not consider maturation
• B) the different cohorts grew up in different historical periods
• C) this design is only appropriate for stage theories
• D) changes over time are not consistent
• E) the single cohort may have shrunk over time because people dropped out of the study

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Definitions:

Biological pH

The measure of acidity or alkalinity in biological systems, critical for various biochemical processes and often maintained within a narrow range.

Aqueous Solution

A solution where water is the solvent.

Predominant Form

The most abundant or common form of a chemical species under specific conditions.

L-Leucine

An essential amino acid used by the body in protein synthesis and various metabolic processes.