Research Methods Alt Flashcards
Laboratory experiments
An experiment conducted in a highly controlled environment.
Laboratory experiments pros and cons
Pros: High control over extraneous variables, higher internal validity, easily replicable.
Cons: Lack generalizability, low internal validity, demand characteristics, low mundane realism.
Field experiments
An experiment conducted in a natural setting.
Field experiments pros and cons
Pros: High mundane realism, high external validity.
Cons: Low control of extraneous variables, low internal validity, difficult to replicate, ethical issues with consent, deception and privacy.
Natural experiments
An experiment where the independent variable changes naturally.
Natural experiments pros and cons
Pros: Unique research and opportunities, high external validity.
Cons: Lacks generalizability, no random allocation, low internal validity.
Quasi-experiments
An experiment conducted on an IV that is based on an existing difference between people.
Quasi-experiments pros and cons
Pros: High control of variables, high internal validity.
Cons: No random allocation, may be confounding variables.
Naturalistic Observation
Involves watching and recording behavior in it’s natural setting, the setting it would naturally occur in.
Naturalistic Observation pros and cons
Pros: High ecological validity, low demand characteristics if undisclosed
Cons: Low control of variables, observer bias, small sample lacks generalizability, not replicable.
Controlled Observation
Involves watching and recording behavior in a structured environment where there is control over variables.
Controlled Observation pros and cons
Pros: High control of variables, can be replicated.
Cons: Low ecological validity, observer bias.
Covert Observation
When participant’s behavior is watched and recorded without their knowledge or consent.
Covert Observations pros and cons
Pros: Less investigator effects, higher internal validity
Cons: Ethical issues about informed consent.
Overt Observations
When participant’s behavior is watched and recorded with their knowledge and informed consent.
Overt Observations pros and cons
Pros: More ethical as informed consent is given.
Cons: Investigator effects, low internal validity.
Participant Observation
One of the observers joins the group and watches and records behavior from inside the group.
Participant Observation pros and cons
Pros: Can obtain detailed and more accurate data.
Cons: Demand characteristics and researcher variables may affect behavior.
Non-participant Observation
The observer remains outside of the group and watched and records their behavior from outside.
Non-participant Observation
Pros: Less investigator effects and variables.
Cons: Less detailed observation and might miss important data.
Self-report techniques
Any method where a person is asked to state or explain their own feelings, opinions, behaviours or experiences related to an investigation’s topic.
Questionnaire
Set of written questions used for self-report. Can be used to assess the dependent variable.
Structured interview
A ‘live’ encounter between an interviewer and an interviewee. The interviewer asks a set of pre-determined questions to assess the interview’s thoughts and experiences.
Unstructured interview
A ‘live’ encounter between an interviewer and an interviewee. The interviewer has a conversation with the interviewee with a general aim to a certain topic to assess their thoughts and experiences.
Semi-structured interview
An interview that falls between a structured and an unstructured interview. There may be a list of pre-set questions but the interviewer is also free to ask-follow up questions.
Correlation
A mathematical technique that looks into investigating an association between two co-variables. Can be positive, negative or zero.
Analysis of the relationship between co-variables
The co-efficient will always fall between +1 and -1. This indicates how strong the correlation is. Analysis will always ask you what direction and how strong the relationship between the co-variables are.
The difference between correlations and experiments
Experiments manipulate an indepdendent variable whilst correlations look at co-variables.
Content analysis
A type of observational research that studies people indirectly via communications people have produced, such as conversations, text messages, social media or media.
Case studies
An in-depth investigation of a unique person, group or case that usualy has an unusual disorder or sequence. Produces qualitative data.
Aims
A general statement of what the researcher intends to investigate. The purpose of the study.
Hypotheses
A testable statement stated before a study begins that states the relationship between the variables to be investigated.
The difference between aims and hypotheses
The aim regards what you are investigating whilst the hypothesis reflects what you think you will find in the investigation.
Directional hypothesis
A hypothesis that states the direction of the relationship between the variables. Is used when the object of the study has been studied before.
Non-directional hypothesis
A hypothesis that does not state the direction. Is used when the object of the study has not been studied before.
Sampling
A group of people who take part in a research investigation. Samples are drawn from a population and presumed to be representative of that population.
Random sampling
A form of sampling where all members of the target population have an equal chance of being selected.
Random sampling pros and cons
Pros: No researcher bias, prevents from choosing people who support the hypothesis.
Cons: Time-consuming, selectants may refuse to take part, may end up with unrepresentative sample.
Systematic sampling
A form of sampling where every nth member of the target population is selected.
Systematic sampling pros and cons
Pros: No researcher bias
Cons: Time-consuming, selectant can refuse to take part, may end up with unrepresentative sample.
Stratified sampling
When the composition of the sample reflects the proportions of people in certain sub-groups within the target population.
Stratified sampling pros and cons
Pros: Greater precision and more representative, no researcher bias.
Cons: Time-consuming
Opportunity sampling
A form of sampling where researchers decide to select anyone who happens to be willing and available at the time.
Opportunity sampling pros and cons
Pros: Cost and time efficient.
Cons: Unrepresentative of the target population, researcher bias.
Volunteer sampling
A form of sampling where participants select themselves to be part of the sample.