Questionnaires, however, have a number of drawbacks that need to be taken into
account in choosing whether to employ them for data collection. First, responses are
limited to the questions asked in the instrument. They provide little opportunity to
probe for additional data or to ask for points of clarification. Second, questionnaires
tend to be impersonal, and employees may not be willing to provide honest answers.
Third, questionnaires often elicit response biases, such as the tendency to answer questions
in a socially acceptable manner. This makes it difficult to draw valid conclusions
from employees’ self-reports.