By what age do children begin to use telegraphic speech and have a vocabulary of 100-200

A researcher is studying post-traumatic stress disorder in survivors of the 9/11 disaster. She wants to interview survivors in order to better understand their thoughts, feelings,

and behaviors to form a narrative description of post-traumatic stress disorder in this population. This is an example of ________ research. a) quantitative b) qualitative c) correlational d) empirical

Your daughter is 9 years old and you have been talking about the changes that she will soon be experiencing. One of the topics that you are discussing is what happens during menstruation and what she can expect

You tell her that the first menstrual period has a special name. What is it? a. spermarche b. menarche c. menstruational primacy d. ovulation