7. Trend Studies:
•A most common type of Longitudinal
Study in mass media Research.
•Trend Study samples different
groups of people at different times
from the same population.
•Trend Studies are common
around presidential election
time.
8.
9.
10. Cohort Analysis
•A cohort is any group of individuals who are
linked in some way or who have experienced
the same significant life event within a given
period.
•Any study in which some characteristic of
one or more cohorts is measured at two or
more points in time is a Cohort Analysis.
11.
12.
13. Panel Studies:
•Panel Studies measure the same sample of
respondents at different points in time.
•Unlike Trend Studies, panel studies can reveal
information about both net change and gross
change in the dependent Variable.
17. Advantages
•The qualitative data can aid in the
interpretation of the quantitative data
and provide insights that might have
been missed.
•Qualitative data might suggest new
hypotheses that could be examined in
subsequent waves of data collection.
18. Longitudinal Research
on the Internet:
An internet survey panel consists of individuals who have
been prerecruited to participate in a number of surveys
over time.
Advantages: A large number of individuals can be
recruited to serve as potential panel members. This makes
it easier for researchers to target and collect data from low-
incidence groups.
Disadvantages: Internet panels may not be
representative of the entire population. Not everyone is skilled
at completing online surveys.
