The research method most commonly used to study infant ...

[Mollykgkg]

The research method most commonly used to study infant temperament is
 
  fMRI evaluation.
  observation.
  DNA testing.
  a controlled experiment.

Question 2

Which of the following groups of modifiers names the four categories of temperament suggested by the New York Longitudinal Study?
 
  easy, difficult, unregulated, hard to classify
  easy, difficult, slow to warm up, hard to classify
  easy, insurgent, slow to warm up, hard to classify
  mellow, tense, shy, indeterminate

[matt]

Answer to Question 1

observation.

Answer to Question 2

easy, difficult, unregulated, hard to classify

[Mollykgkg]

Thanks for the timely response, appreciate it

[xiazhe]

Great answer, keep it coming