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HLTH 490 Test 1 Topic 1
Introduction to Experimental Research
14
Health Care
Undergraduate 3
02/08/2009

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Term
empirical approach
Definition
based on observations
used in everyday living
ex: teacher sees students becoming restless and assumes they are bored
Term
why to observe
Definition
establishes the need for the study
Term
hypothesis
Definition
statement indicating what results are expected
Term
whom to observe
Definition
1. decide whether to observe an entire population or just a sample
-with samples, want to be unbiased
Term
how to observe
Definition
select among available instruments such as objective tests, interviews, and direct observation of behavior, with an eye to selecting the most valid instrument(s)
Term
when to observe
Definition
when to use instruments to obtain the most valid results
Term
data
Definition
can be numbers that are analyzed statistically or can be qualitative data
Term
experimental research
Definition
treatments given for the research purpose
Term
nonexperimental research
Definition
no treatments given
Term
null hypothesis
Definition
no association between variables
Term
alternative hypothesis
Definition
an association exists between variables; can be directional or non-directional
Term
According to the topic, are samples often observed?
Definition
Yes.
Term
The results from which type of research (qual. or quant.) are NOT reduced to numbers?
Definition
qualitative
Term
If a researcher asked students for their opinions on switching from the semester system to the quarter system, would the researcher by conducting "experimental research" or "non-experimental" research?
Definition
nonexperimental
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