The Influence Of Verbal And Non-verbal
Language Manipulations On Data Quality
Author(s)
M. Lapietra & C. Pronello
Abstract
The problems concerning data quality lead to negative consequences for
transport planning; every year many millions of euros are spent collecting data
and developing and using travel models that are based on these data. This paper
is the result of studies about the effects of some different combinations of
languages, understanding that the early step for data quality is comprehension of
the questionnaire. It has been hypothesized and demonstrated that a number of
verbal and non-verbal languages and the visual presentation of response choices
affect respondents’ perception and influence answers. Starting from this
assumption, research has been developed to test different forms of languages on
a well defined group of people using a self-administered questionnaire. To this
aim the university staff working in the department of transport and students
attending transport courses were chosen. The innovation in the design of the tests
developed in the research is the use of a small group because each unit represents
a reliable result concerning the people’s understanding of the question. The same
questions, elaborated following different verbal and not verbal languages, were
proposed to the interviewees in the same time period to avoid external effects
influencing the people’s answers. The results of this experiment are really
interesting and suggest that differences in question format also influence the
responses of people with \“high education” levels.
Keywords: data quality, survey, questionnaire design.
1 Introduction
The problems concerning data quality lead to negative consequences for
transport planning, thus an important focus is to define some guidelines to obtain
Keywords
data quality, survey, questionnaire design.
Related Book
Other papers in this volume
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