Resaerch Methods Flashcards
What is a field experiment
Manipulation of the IV but measure it in the real world
What is a lab experiment
A manipulation of the IV to see the effect on the DV
Controlling of extraneous variable to stop them be coming confounding variables.
Random allocation of participants to the conditions of the independent variables
What is a natural experiment
Conditions already exist eg hair colour eye colour etc
What are some strengths of a lab experiment
High internal validity
What are some weaknesses of a lab experiment
Demand characteristics
Low ecological validity
What are some strengths and weaknesses if a field
experiment
High population and high ecological validity
Low demand characteristics :)
Low internal validity :(
What are some strengths and weaknesses of a natural experiment
High ecological validity :)
Low internal validity :(
What is a volunteer sample
Participants willing to take part make and effort/ elect themselves to take part in the advertised study
What is a opportunity sample
Participants that are available at the time for that study that are from the target audience are asked to take part and if Willing proceed
What is random sampling
Participants all have an equal chance of getting selected as did people from the target audience who Weren’t picked everyone in target audience is identified.
How do you write a experimental hypothesis
1- this group of people in this condition
Who have this characteristic
2- will do/be/more/less/higher/lower/worse on a measure
Or
Will be different in a measure of behaviour
3- than that group of people in that condition who have that characteristic are treated in that way.
How do you write a correlational hypothesis
1- there will be 2- positive or negative (directional) A ( non directional) 3- correlation Between operationalised variable (1) And operationalised variable (2)
What is a correlational study
A process rather than an actual method It is the way the data is analysed which is important The method of collecting data could be Questionnaires Interviews Observational Content analysis (Qualitative form)
What are some strengths of a correlational study
Allows to look at the link between variables when it would be unethical to test
Allows to see strength of variables & relationship between them
What are some weaknesses of a correlational study
Makes think there’s no link between variables
When there is
Cannot draw cause and effect conclusions from correlational data