2019 年 94 巻 p. 3-12
A symposium was held on June 23, 2018, entitled “What is Public Opinion
Survey Discussion on the Reliability of Public Opinion at a Crossroads” at
the Spring Research Presentation of the Japan Society for Studies in Journalism
and Mass Communication.
In public opinion polls, it is natural that reliability and validity are required
together with its immediacy. However, although the trial and error is being carried
out at each research institution about the methodology of such cellular
phone RDD （Random Digit Dialing） survey, researchers and practitioners of
related positions will meet together to discuss its reliability and validity. Therefore,
it is the purpose of this symposium to overview the present situation of
public opinion surveys, to discuss its reliability and consider its validity, and to
confirm the concept of “public opinion survey in the present age” at the same
time.
Discussions were held at this symposium by three public opinion survey
practitioners and two researchers. The point of discussion is the current state
of public opinion survey in the mass media; in particular the basic concepts of
RDD fixed telephone survey and the problems of RDD phone survey to landlines
and mobile phones. The issues were then collated. In addition, there was a
report on conditions for the creation of alternative methods and investigation
methods conforming to the conditions for post-RDD fixed telephone surveys.
In response to these reports, important points were identified, stating that
it is necessary to clearly distinguish between surveys and polls and to handle
polls appropriately.
