Research Methods Flashcards
(220 cards)
What are the types of variables?
- independent
- dependent
- extraneous
- confounding
What is the independent variable?
The researcher manipulates this to determine the effect on the DV. It is divided into levels which are the experimental conditions.
What is the control condition?
This is the condition where the IV is not manipulated. It provides a standard to compare to.
What is the dependent variable?
This is the variable being measure.
What are extraneous variables?
These are variables other than the IV which could affect the DV.
What are confounding variables?
These are variables other than the IV that have affected the DV.
What are laboratory experiments?
These are carried out in a controlled environment where the researcher can observe and measure the change in the DV. Participants are usually randomly allocated to conditions.
What is random allocation?
This is when an unpredictable method is used to decide which participants take part in which conditions.
Advantages of a laboratory experiment. (3)
- control
- cause
- replicable
- there is a high level of control over the IV and it is easy to control any EV, making it more valid
- cause and effect can be established
- it is highly replicable makings it more reliable
Disadvantages of a laboratory experiment. (2)
- demand
- ecological
- demand characteristics could affect results
- it lacks mundane realism and ecological validity
What are field experiments?
These are carried out in the real world or in a natural setting. The IV is still manipulated and controlled.
Advantages of field experiments. (3)
- ecological
- cause
- demand
- there is mundane realism and ecological validity
- cause and effect can be established
- there are less demand characteristics
Disadvantages of field experiments. (3)
- control
- sample
- replicable
- there is less control over EV
- there is less control over the samples as it is a natural setting
- it is more difficult to replicate
What is a quasi experiment?
This is when the participants cannot be randomly allocated to the different conditions because the IV is a quality of the participants.
What is a natural experiment?
This is when researchers take advantage of a naturally occurring IV.
Advantages of natural experiments. (2)
- ecological
- useful
- there is mundane realism and ecological validity
- it is useful when usually it’s impossible or unethical to manipulate this IV
Disadvantages of natural experiments. (3)
- control
- replicable
- cause
- there is less control over any EV
- it is difficult to replicate
- cause and effect cannot be established
What is an observation?
This is when the researcher watches or listens to the events.
What are the different types of observation?
- non participant- the researchers doesn’t get directly involved
- participant- the researcher is directly involved
- covert- the researcher goes undercover and doesn’t reveal their true identity
- overt- when the researcher does reveal their true identity
What is a naturalistic observation?
This is when the researcher uses participants in their own environment and there is no deliberate manipulation.
Advantages of a naturalistic observation. (3)
- demand
- ecological
- useful
- less demand characteristics if covert observation is used
- there is high mundane realism and ecological validity
- it is useful for when deliberate manipulation of the IV is impractical or unethical
Disadvantages of a naturalistic observation. (3)
- control
- cause
- bias
- there is no control over any EV
- cause and effect cannot be established
- there is risk of observer bias
What is a controlled observation?
This is in a controlled environment and allows manipulation of the IV.
Advantages of a controlled observation. (3)
- cause
- control
- complex
- cause and effect can be established
- there is high control of any EV
- rich and complex information is obtained