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Content: This is called descriptive research. In terms of validity, 
observational research findings are considered to be strong. Trochim states that 
validity is the best available approximation to the truth of a given 
proposition, inference, or conclusion. Observational research findings are 
considered strong in validity because the researcher is able to collect a depth 
of information about a particular behavior. However, there are negative aspects. There are problems with reliability and generalizability. Reliability refers the 
extent that observations can be replicated. Seeing behaviors occur over and over 
again may be a time consuming task. Generalizability, or external validity, is 
described by Trochim as the extent that the study's findings would also be true 
for other people, in other places, and at other times. In observational 
research, findings may only reflect a unique population and therefore cannot be 
generalized to others.