Author Question: La Greca et al. (1996) studied a group of children who lived through a severe hurricane in order to ... (Read 52 times)

lilldybug07 · **on:** Jun 20, 2018

La Greca et al. (1996) studied a group of children who lived through a severe hurricane in order to document the extent to which they experienced posttraumatic stress disorder (PTSD).

The researchers obtained measurements at 3, 7, and 10 months after the hurricane. Such research involves a
a. withdrawal design.
b. cohort design.
c. cross-sectional design.
d. prospective design.

Question 2

To find out if using night lights affected the development of nearsightedness, a group of researchers asked parents whether their teen-aged children had slept with night lights on as infants. This research illustrates a

a. retrospective design.
b. cohort design.
c. cross-sectional design.
d. longitudinal design.