HLTB15H3 Lecture Notes - Lecture 2: Cognitive Test, Xibalba, Statistical Hypothesis Testing

Hltb15 lecture 2

SHARED CONCEPTS

 Specific we want to thing about how big the research questions, what do we want to know depending what

your research topic or questions is going to how ur study will be designed

 Ethics, and other stuff are intwinded in both methods.

 WHAT YOU LEARN I BASED ON WHAT YOU ASK

o Research questions should be carefully formulated to address a specific issue

o Study design = research aims

o Need to gather the information to answer the questions

 because concepts are easily identified and large population

 hypothesis is either right or wrong,

o qualitative

 one issue in great depth

 concepts not easily quantified

 no knowledge/basi for a hypothesis

 when u look at one issue in greater depth

 not easily quantified – phsiisa assistae die eaple – its a hole e area of edial

care and research (how phyiciains after the treatment and wht are the feeling of the families, )

used to describe when someone not easily quantified

o Devise measures of cocept

o Select research sites

o Select research participants

o Collect data

o Process data

o Analyze data

o Conculsions

o Write up

 CONCEPTS AND HEALTH RESEARCH

o Ideas of metnal represenations of thigns

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 Cause of an aspect in social world

o Dependent

 Something that can be explained by another factor

o Healthy life style : reducing risky behaviour, pshyocological well beaing, healthy diet, access to health

care sste et…

o Picking a aspect of healthy life style (specifically picking exercise )

 INDEPENDENT VARIABLE

o Something we can manipulate and we can control for (lifestyle)

 DEPENDENT VARIABLE

o Provides conistancey in measuring the differences between people

o Allows for estrimation nature and strength of relationships between concepts

 KNOWING WHAT YOU ARE MEASURING

o Nominal definition : giving facts … tet desriptio of hat the oept eas

o Operational definition : explcit definition and take steps to measure

o Quantitative using likard scale ( like, not like, somewhat) – it gives more option .. likard skill is preferred

because you can see the change in the opioion

REALIBILITY AND VALIDITY

 Are the way squnativitve research is judged

 Often are lumped together but two different thing

o Stability overtime

o Internal realibility

o Inter-observer consistency

o Video : measuring the rule and it validity making sure that ruler is each centimeter and measure 4 times

and get same result in health a tool can be reliabelt without getting the same exact results ( example

measuring with thermometer and the results both time had little difference but

o STABILITY OVER TIME: TEST – RETEST METHOD

 THERMOMETER EXPERIMENT

 RESULT : its reliable

 Correlation

 How consisten/realiable are the multiple measures administered in one sitting?

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