ABSTRACT
Once you have decided to use direct observation methods in your research, either because automated mea-
surement techniques are not available and standard tests and questionnaires do not seem adequate, then there
are decisions you have to make (Sackett, 1978):
• deciding what to observe
• deciding on a sampling strategy
• deciding whether your data are usable (reliable)
• deciding how to analyze the data and evaluate your research hypotheses.
