Research Methods Flashcards
What is an aim
A statement of a study’s purpose
3 types of hypothesis
One tailed/directional, two tailed/non-directional and null
Directional Hypothesis
States the difference between conditions
Non directional hypothesis
States there will be a difference but doesnt say what the difference will be
Null hypothesis
There will be NO significant difference between the conditions
Independent Variable
The variable we’re changing/ manipulating
Dependent Variable
The variable we’re measuring
Control
The extent to which any variable is held constant or regulated by a researcher.
Random allocation
Everyone has an equal chance of doing either condition
Counterbalancing
Half the participants participate in condition A before condition B and vice versa. (overcomes order effects)
Randomisation
Materials are presented in a random order
Standardisation
Everything should be as similar as possible for all participants
Extraneous variables
Variables other than the IV that could influence your results
Confounding variables
Variables other than the IV which has influenced your results
Ethical guidelines
Standards of behaviour, promoting fairness, protecting rights, and minimising harm.
Informed consent
Knowing aims and giving your permission to take part in the study
Deception
Deliberately misleading or withholding information
Right to withdraw
Being able to leave when desired
Confidentiiality
Details should be kept private
Protection from harm
No more harm than daily life
Independent Groups
There are 2 separate groups of participants. One takes park in Condition A and the other in B
Independent Groups A+W
Fewer demand characteristics
No order effects
But more participants needed
Individual differences
Repeated Measures
One group that takes part in both conditions
Repeated Measures A+W
No individual differences as the same person does both conditions
Demand characteristics
Order effects
Matched Pairs
Two groups and they are matched into pairs for certain qualities such as age or intelligence. One does Condition A and the other B
Matched Pairs A+W
No order effects
Controls for individuals differences
Difficult to match people perfectly
Costly and time consuming
Field Experiment
Take place outside of the lab but still manipulates IV
Field Experiment A+W
Less Artificial
Avoids participant effects producing more natural behaviour
Less easy to control extraneous variables
Ethical Issues (pps unlikely to know they are being studied)
Laboratory Experiment
Controlled artificial environment where IV is manipulated
Laboratory Experiment A+W
Controlled environment
Minimises extraneous variables
Artificial environment
Pps may behave differently due to environment
What is meant by the term ‘double blind’?
Neither the participants or the researchers are aware of the aims of the investigation
What is meant by the term ‘single blind’?
Participants aren’t aware of the condition they are in
Attempts to control for the confounding effects of demand characteristics
Natural Experiment
Natural Environment. IV manipulated taking advantage of a naturally occuring event
Natural Experiment A+W
High ecological validity
Few ethical issues
Many extraneous variables
Naturally occuring events are infrequent limiting research opportunity
Quasi Experiment
The IV is a naturally existing characteristic between people and hasn’t been changed by anyone or anything
Quasi Experiment A+W
Done in labs so high in control
‘Real’ problems can be studied
Pps can’t be randomly allocated to conditions so there may be confounding variables. Meaning we can’t say cause and effects
What are behavioural categories?
Categories defined by the researcher to observe during the experiment
Event Sampling
Counting the number of times a certain behaviour occurs
Time Sampling
Recording behaviours in a given time frame
Controlled Observation
When the researcher has some measure of control over the environment
Controlled Observation S+W
Control over extraneous variables
Easy to replicate
Can’t be applied to real life setting
May be subjective towards what the researcher wants to see
Naturalistic Observation
Studying behaviour in a natural setting where everything has been left as it is normally
Naturalistic Observation S+W
High ecological validity
Natural Environment- generalised to everyday life
Replication is difficult
Uncontrolled extraneous variables
Covert Observation
The participants aren’t aware that they are being observed
Covert Observation S+W
No demand characteristics
Ethical Issues
Overt Observation
The participants are aware that they are being observed
Overt Observation S+W
Less ethical issues
Might be demand characteristics as they know they are being watched
Participant Observation
The observer acts a part of the group being watched
Participant Observation S+W
Experience situation and increases validity
Lose objectivity
Difficulty in recording observations
Non-participant Observation
The experimenter does not become part of the group being observed