If a researcher wanted to study the development of handwriting ...

[colton]

If a researcher wanted to study the development of handwriting ability in children, she could measure the handwriting of a group of second-graders and continue to take handwriting samples from these same children each year until sixth grade.
 
  This is an example of:
 
  longitudinal research.
  cross-sectional research.
  cross-sequential research.
  a replication study.

Question 2

A researcher who tests the same individuals over thirty years, when they are 10, 20, 30, and 40 years old, is conducting:
 
  cohort research.
  longitudinal research.
  continuous research.
  cross-sectional research.

[ririgirl15]

Answer to Question 1

longitudinal research.

Answer to Question 2

longitudinal research.

[colton]

Great answer, keep it coming

[jomama]

Excellent