RESEARCH METHODS- Experimental methods Flashcards
LAB: Where are lab studies conducted?
in a controlled enviroment
LAB: What do researchers do to look for cause-and-effect relationships?
The independent variable is directly manipulated by the experimenter and the effect of this is measured by the dependent variable
LAB: Are the participants aware they are in a study?
Yes
LAB: True or false
Are participants randomly allocated to the experimental conditions
True
LAB: Give an example of a lab study
Peterson and Peterson’s study on the duration of STM
LAB: Give 2 advantages
Easily replicated- reliable and valid
Cause and effect can be determined
LAB: Give 2 disadvantages
Setting is artificial- lacks ecological validity + mundane realsism
Demand characteristics
Field: Where are these experiments carried out?
In an enviroment natural to its participants
Field: Can the cause-and-effect relationship be determined?
Yes
Field: Which type of variables are difficult to control
Extraneous
Field: Are participants usually aware of the study?
No
Field: Give an example
Pilivian et al New York Subway Good Samaritan study
Field: Give 3 advantages
Higher ecological validity than lab experiments
Lower chance of demand characteristics
Cause and effect relationships can be determined
Field: Give 3 disadvantages
Less control over evs
Difficult to replicate
Can be very time consuming
Natural: Where are natural experiments conductecd?
In a natural enviroment
Natural: How does the IV occur and is it manipulated ?
Naturally and no
Natural: Can the cause-and-effect relationship be established?
Yes
Natural: Are the participants aware of the study?
No
Natural: Give an example
Yuile and Cutshall
Natural: Give advantages
High ecological validity
Useful for when it is impossible/unethical to manipulate the IV
Natural: Give disadvantages
Less control over the EVs
Less control over the sample
Hard to replicate
Difficult to determine cause and effect
Quasi: When are these used?
When the researcher is interested in independent variables that cannot be randomly assigned
Quasi: What is the IV usually?
An innate characteristic that cannot change such as gender
Quasi: Give an example
Sheridan +king on male and female obedience
Quasi: GIve an advantage
Useful when it’s unethical to manipulate the IV
Studies the ‘real effects’ so there is increased realism and ecological validaty
Quasi: Give a disadvantage
confounding environmental variables are more likely= less reliable
Must wait for the IV to occur
Can only be used where conditions vary naturally
Aware they’re studied= less internal validaty