RESEARCH METHODOLOGY

Detailed explanation-1: -Whereas a trend study samples a population whose members may change over time, a cohort study samples a particular population whose members do not change over the course of the survey.

Detailed explanation-2: -The first type of longitudinal survey is called a trend survey. Researchers conducting trend surveys are interested in how people’s inclinations change over time, i.e., trends. The Gallup opinion polls are an excellent example of trend surveys.

Detailed explanation-3: -In contrast to many other types of research, longitudinal studies and surveys offer unique insight that might not be possible using any other research method. And because the longitudinal method allows researchers to look at changes over time, it’s particularly useful for studying lifespan and development issues.

Detailed explanation-4: -Survey research a research method involving the use of standardized questionnaires or interviews to collect data about people and their preferences, thoughts, and behaviors in a systematic manner.