Multiple Choice
Cowan, et al. (1999) conducted an example of the ________ of research. They investigated developmental changes in short-term memory for single-digit numbers. Their participants were groups of first graders, fourth graders, and young adults.
A) cross-sectional method
B) random assignment method
C) longitudinal method
D) none of the above
Correct Answer:

Verified
Correct Answer:
Verified
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