Research Methods - Paper 2 Flashcards
Ethical issues
These arise when a conflict exists between the rights of participants in research studies and the goals of research to produce authentic, valid and worthwhile data to contribute to society.
However telling them may render it meaningless as it could change behaviour.
Milgram - would not have acted the way they did if participants knew aims.
Confidentiality
A participants right to have personal information protected.
Deception
Where a participant is not told the true aims of the study eg. what it will involve and therefore cannot give truly informed consent.
Withholding information, deliberately dishonest. However can be justified if doesn’t cause any undue distress and aims are told in the debrief and right to withdraw.
Informed consent
Participants have the right to be given comprehensive information concerning the nature and purpose of the research and their role in it, in order that they can make an informed decision about whether to participate.
Protection from harm
During a research study, participants should not experience negative physical or psychological effects, such as physical injury, lowered self-esteem, or embarrassment.
Participant’s respect and dignity maintained.
Right to withdraw
Participants should have the right to withdraw from participating in a study if they are uncomfortable in any way and should also have the right to refuse permission for the researcher to use any data they produced.
Anonymity
A participant’s right to remain nameless.
Competency
The capacity for the researcher to deal professionally with issues that arise during the course of the research programme.
BPS code of ethics
A quasi-legal document produced by the British Psychological Society (BPS) that instructs psychologists in the UK about what behaviour is and is not acceptable when dealing with participants. It is built around four major principles: respect, competence, responsibility and integrity.
Cost benefit analysis
Used to determine whether research proposal is ethically acceptable. Weighing pros and cons, is it worthwhile, is it harmful, what are the benefits.
How can you obtain informed consent?
Signed consent letter
Presumptive
Prior general
Retrospective
What is presumptive consent?
Rather than getting consent from the participants themselves, a similar group of people are asked if the study is acceptable. If this group agree, then consent of the original participants is ‘presumed’.
What is prior - general consent?
Participants give their permission to take part in a number of different studies- including one that will involve deception. By consenting, participants are effectively consenting to be deceived.
What is retrospective consent?
Consent is asked in the debrief. Participants are not aware of their participation, subjects of deception.
What does a debrief include?
Participants made aware of any aims or info that wasn’t received prior to study.
Any deals with deception.
Must be told they have the right to withhold data. This is important in retrospective consent.
Population
Refers to the large group of individuals that a particular researcher may be interested in studying, for example students attending sixth form.
Target population
Particular subset of the overall population from which the sample will be taken, for example students attending sixth form in Newcastle.
Sample
Small number of people a researcher selects to take part in a research investigation. It is drawn from the target population and is presumed to be representative of that population so findings can be generalised.
Representative
Contains the same characteristics as the target population from which the sample was taken (reflective)
Generalisation
The extent to which findings and conclusions from a particular experiment can be broadly applied to the population. This is possible if the sample of people is representative of the population.
What is a sampling technique?
Method used used to select the sample from the target population.
What is random sampling?
Everyone in the population has an equal chance of being studied, random generator
What are the strengths of random sampling?
Not biased
Completely random
Quick and easy
What are the limitations of random sampling?
May not be representative
Participants may not want to take part
Hard to get a list of the target population
What is systematic sampling?
Every nth number of the target population is selected, list created in some sort of order (alphabetical).
What are the strengths of systematic sampling?
Not biased
Fairly representative
What are the limitations of systematic sampling?
Refusal to take part
Difficult to get list of target population
Time consuming
What is stratified sampling?
 Put into certain sub groups (strata), characteristics such as income, education, lifestyle, age, gender are used as sub groups
What are the strengths of stratified sampling?
Picked randomly
Not biased
Most representative
What are the limitations of stratified sampling?
Time consuming to identify strata and target population.
The selection of the appropriate strata for a sample may be difficult.
What is opportunity sampling?
Taking a sample of people who are willing and available at the time that the study is being carried out and fit the criteria of the research.
What are the strengths of opportunity sampling?
Easy
Quick
Cheap
What are the limitations of opportunity sampling?
Not representative of target population.
What is volunteer sampling?
Advertise in media, participants are self selected.
What are the strengths of volunteer sampling?
Quick/not time consuming
Easy
What are the limitations of volunteer sampling?
Volunteer bias cannot be generalised
What is an experimental method?
Involves the manipulation of an independent variable to measure the effect on the dependent variable. Experiments may be laboratory, field, natural or quasi.
What is an aim of a study?
A general statement of what the researcher intends to investigate; the purpose of the study.
What is a hypothesis?
Statement (educated guess) that is made at the start of the study about what will happen in the study.
Clearly states the relationship between variables as stated by the theory.
Should be clear and precise.
What is the difference between an aim and a hypothesis?
An aim is a general statement of the purpose of an investigation whereas a hypothesis is a precise, testable statement which states the relationship between the variables.
What is a directional hypothesis?
States the direction of the difference or relationship
Makes prediction of what happens
One tailed
What is a non-directional hypothesis?
Does not state the direction
Two tailed
When would a directional hypothesis be used?
When the findings of previous researchers suggest a particular outcome.
When would a non-directional hypothesis be used?
No previous research or findings from earlier studies
Not contradictory
What is a null hypothesis?
Predicts that statistically significant effect or relationship will not be found
What is a research hypothesis?
Predicts statistically significant effect of an IV on a DV (experiment) or significant relationship between variables (correlation)
What is a variable?
Any ‘thing’ that can vary or change within an investigation
Used in experiments to determine if changes in one ‘thing’ result in changes to another
What is the independent variable?
Manipulated by researcher to measure effect on dependent variable
What is a dependent variable?
Measured by researcher
Any effect on this should be caused by changes in the independent variable
What is the control condition in an experiment?
Provides a baseline measure of behaviour without manipulation of independent variable
Results from experimental condition are compared to this condition
What is the experimental condition in an experiment?
Involves manipulation of independent variable
Results from the control condition are compared to this condition
What does it mean by ‘operatenalisation of variables’ ?
Clearly define variables to ensure that they’re made measurable
What is an extraneous variable?
Any variable other than the IV that MAY have an effect on the DV if not controlled
They’re ‘nuisance variables’ that don’t vary systematically with the IV - their effect is random
Ideally identified at start of study
Eg. Noise, weather, temperature, anxiety
What is a confounding variable?
Any extraneous variable that varies systematically with the IV so that we cannot be sure of the true source of change to the DV
Eg. Introvert/ extrovert (personality)
What are demand characteristics?
Cue from researcher or from situation that may be interpreted by participants as revealing the purpose of the investigation
Please -u or screw-u effects could occur
What are investigator effects?
Any effect of researcher’s behaviour (conscious or uncenscious) on the dependent variable the research
May include anything from design of the study to the selection of and interaction with participants during research
What is randomisation?
Use of chance in order to control for the effects of bias when designing materials and deciding order of conditions
What are single blind experiments?
When participants don’t know which condition they’re taking part in within an experiment
What is a double blind experiment?
When neither the participants or the investigator know which condition the participants are taking part in
What is counter-balancing?
Attempt to control for order effects in a repeated measures design
Half experience in one order ( A then B) then the other halfin the opposite order (B then A)
What is standardisation?
Using exactly the same formalised procedures and instructions for all participants in a research study
What is an experimental design?
Different ways in which the testing of participants can be organised in relation to the experimental conditons
Ways in which to allocate participants to different conditions
What is an independent groups design?
Different participants are allocated to different groups where each group represents one experimental condition
Allocation should be made randomly
What is repeated measures design?
All participants take part in an conditons of the experiment one after the other
May use counterbalancing to reduce order effects
What is matched pair design?
Pairs of participants are matched in terms of key variables such as as age
One member is then assigned to conditon A then other to condition B
What is randomisation in experimental designs?
Attempt to control participant variables in an independent groups design which ensures they have the same chance of being in one condition as any other
What are order effects?
Occurs in repeated measures design (confounding variable)
Practice ettect/boredom effect which could impact the results
What are the advantages of independent groups design?
Less time consuming
Reduced demand characteristics
Don’t experience order effects
What are disadvantages of independent groups design?
Bigger sample needed to produce same amount of data as RMD
Risk of participant variables (individual differences between participants)