I believe the answer is: on the home pages of Stone and Neale and by looking on Google Scholar
Scientific journals usually provided for free so other scientists across the world could test its validity or develop a more advanced research using the result of the previous research as a foundation. This had been the system that we use to dramatically revolutionise the stem fields.
The correct answer is longitudinal
Research data can be related to time in two ways: In the first, all variables refer to a single period, time is constant, this is the transversal method. In the second, the variables can refer to different moments, the time is now variable, and the method is now classified as longitudinal.
In longitudinal methods, time is variable. It can be just a before and after, hourly intervals throughout the day, months throughout the year, years over decades ... what matters is that there is more than one moment, more than one period.
Answer:
Lower class
Explanation:
People in lower class group are characterized by widespread penury and alcoholism which leads to high depression rate
