Research methods
What is a hypothesis?
a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
What the scientific method?
a systematic process for establishing facts through observation, experimentation, and analysis
What is the mode?
The result that is most common.
What is Standard deviation?
A measure of how dispersed the data is in relation to the mean.
What is a experimental group?
Those that had a treatment during the experiment
What is an Correlation coeffcient?
A statistical measure that expresses the extent to which two variables are linearly related (meaning they change together at a constant rate).
What is a natural experiment/observation?
A natural experiment is when one variable occurs naturally
Grafton et al - they couldn't damage people's pre frontal cortex so they used veterans this is a natural experimnet
What is hindsight bias?
The tendency to claim currents events were to happen even though it was completely unpredictable in the past.
What is a Double-blind procedure
a research method where neither the participants nor the researchers know which treatment or intervention the participants are receiving
What is external validity?
How well the study can be generalised to the wider population
It means that one variable has a direct result on another. Lots of research and studies have to be completed to demonstrate this
eg smoking and lung cancer
smoking is the variable and the direct result is lung cancer
What is a longitudinal study?
a research method that involves repeatedly observing the same variables over a long period of time
The extent to which a study has been replicated to ensure the results are not just luck
If a study gets the same results again and againit is said to have test-retest reliability
A hypothesis is a testable statement that is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. A working hypothesis is a provisionally accepted hypothesis proposed for further research.