Under what circumstances would you choose a directional hypothesis?
When previous research has been done.
Define Demand characteristics
When participants look for clues to discover the aim of the experiment and may change their behaviour accordingly.
Random allocation Steps.
1) Assign each participant a number to anonymise them.
2)Put numbers in a hat/lottery method
3)Pull names out alternatively till you have correct numbers of participants in each condition.
Define Hypothesis
This is your prediction about what you will find it is a testable statement.
Define Aim
A statements that describes the purpose of your investigation.
What are the demand characteristics?
Please you- please the experiment
screw you- sabotage experiment.
behaviour no longer normal
Operationalisation of variables
Narrowing down a broad concept into a format that it can be tested in (making it measurable)
Define research question
This is your ideas of what you what to test
Define Paradigm
A shared set of assumptions and methods.
Define naïve participant
A participant who is unaware of the research
Define extraneous variable
Any variable not being investigated that has the potential to affect the outcome of a research study.
eg.lighting
Define Confounding variable
Influences that interfere with an accurate measurement between the IV and DV.
Define investigator effects
Unwanted influence of the investigator on the research.
What is a paradigm shift
The result of a scientific revolution a significant change in the dominant unifying theory within a scientific discipline.
Define non directional hypothesis
Statement that does not predict the exact direction or nature of the relationship of the 2 variables.
Define objectivity
To base judgements on external data rather than person feelings (bias)
What is the empirical method
The use of quantitative observation in order to test or refine a theory.
What is replicability
The study should be consistent to produce the same results.
Define Falsifiability.
The capacity for some proposition statement, theory or hypothesis to be proven wrong.
Define randomisation
This is the use of chance to reduce the researchers influence on the design of the investigation.
What is standardisation
When all participants go through the same experience
What are the types of experimental design?
-Independent groups
-Repeated measures
-Matched pairs
What is independent groups?
Where separate groups of participants experience different condition. Each participant will experience on level of the IV.
What is repeated measures?
Where all the participant go through all the conditions.